S2E12: We find out the 0-60 times on our EFI supercharged intercooled 420 cc Hemi

Season 2 Episode 12 : Jimbo modifies the clutch and tries to fix the fuel injection on the street legal go kart. We take the car to the hillbilly proving grounds and record the zero to 60 acceleration times. Could the car perform better? find out.
The walls in our new studio are bare, if you want to send swag please send it to:
Robot Cantina
207 S. Sedgwick Ave
P.O. Box 28
Haven KS, 67543

[@rickgray8250]

Gas popping the fan blade might be from some kind of thermal contraction/expansion. If the blades were warm and the gas was spilled on them, the evaporating gasoline would have caused those blades to cool down rapidly. This may have caused enough stress internally to the plastic fan blades to cause them to break/pop off.

[@802Garage]

My guess as well.

[@gutserker]

Considering they're most likely nylon, I doubt the gas itself has anything to do with it, rather just like you said thermal shock. Computer fan blades have rather strict tolerances for expansion, considering the cost, since it affects performance. That means a stiff material used

[@Cujo116]

it's probably bc the gasoline dry rotted them/ corroded them

[@bishopworks3203]

Not only that, but I also bet the fan blades were already quite fatigued from the high temperatures in the engine bay, these fans are only meant for computers after all.

[@kansasrose2909]

@@bishopworks3203 A lot of this is completely unexpected.

[@brett8090]

The fan blades might have been thermal shock or just crappy injection molding with a lot of internal stress. That's an interesting issue however.

[@darwinskeeper421]

I had oatmeal for breakfast, but I am a mechanical engineer, and agree with this hypothesis.

[@Hewitt_himself]

theres also the fact the stream of gas would of slammed the blade into in the rad, compounding any defects wether they be a moulding issue, installed wrong and rubbing, or ate some gravel whilst driving

[@JamesHryb]

The top of the fan blades are also matte which gives more surface area for the fuel to evaporate off, and gasoline has very high calorific values Btu/gal (when it evaporates like butane it gets much colder) which made it act like a freezer. plastics do not like rapid thermal expansion/contraction and POP!

[@tigererickson8375]

I had lucky charms, and I'd concur. Between the molding, the possibility of a prior internal fracture, and pouring the fuel onto a warm blade (assuming they were sitting in the sun).

[@scrappyhustler7467]

I ate breakfast at mcds and U guys are all wrong it was those damn Gnomes they broke the fan blade to sabotage this guy's experiment!

[@nodrug2]

I look forward to Sundays to watch your whimsically serious videos. It's fun watching someone fool around seriously and enjoying themselves and I sponge off your fun. looking forward to next week and I'm still on the record for 84 MPH with the v-twin BIG BLOCK!

[@kansasrose2909]

@Dr. Whoneedstoknow Sounds good to me.!

[@mommapanda5736]

@@kansasrose2909 The price is right for me too..

[@kansasrose2909]

@@mommapanda5736 Do the gnomes live in Middle Earth like the Hobbits do??

[@mommapanda5736]

@@kansasrose2909 Most likely, but in different neighborhoods...

[@kansasrose2909]

@@mommapanda5736 I could watch ROBOT CANTINA every day of the week and twice on Sundays.

[@spychodog]

"Too far down the rabbit hole for this project" - are you nuts ? This project defines crazy rabbit holes !

[@mommapanda5736]

Yes... we are halfway to China now.

[@kansasrose2909]

@@mommapanda5736 Are you ready for the big heat dome this weekend.

[@mommapanda5736]

@@kansasrose2909 Oh my gosh,, it will be like an oven over the lower states.

[@kansasrose2909]

@@mommapanda5736 Keep your airconditioner running if you can.

[@dekoningboodt3642]

Take the gearbox out of the occasion; a fixed custom made single gearset replicating your current 4th gear ratio will reduce driveline losses and most likely improve 1 to 2 seconds on your 0-60 (my 2 cents). Keep us posted on your ventures; loving the series!

[@karlfischer1011]

4th in a 5 speed is often 1:1 but can vary a little, either slightly over driven or slightly under driven. A fixed ratio between 3rd and 4th, but closer to 4th may prove better. Dual cvt setup could be an exercise in crazy futility, or something amazing!

[@El_Chompo]

Have you ever had fresh ground cinnamon? Whole new ballgame. Thanks for your videos by the way. They always improve my mood.

[@TheStuartstardust]

1:44 - slipping due to light pucks is not the root cause, but an effect of increasing horse power at given rpm. The spring is the one that drives the tension, the pucks adjust the rpm the CVT shifts at in combination with the spring. But for tuning, you normally increase the spring first to get higher torque transfer without slipping (which also increase the rpm), then adjust the pucks to make it shift at the optimal rpm (peak hp) 🤓

[@DC_DC_DC_DC]

It took way too long for someone to write this. Almost started writing myself because of previous episodes

[@kansasrose2909]

@@DC_DC_DC_DC I am glad to see the comment here.

[@mommapanda5736]

@@kansasrose2909 I come here for the comments and stay for the lunacy of this channel.

[@kansasrose2909]

@@mommapanda5736 💖💖💖

[@jfv65]

If the HG pops again, try to find a multi layer steel gasket. Those can hold up to some serious boost. Or just make your own HG out of annealed copper sheet. Good call on that exhaust leak. Every time an exhaust pulse passes the leak it creates a low pressure gaspocket behind it which in turn allowes ambient air to be drawn through the leak into the exhaust which in turn will be pushed past the O2 sensor scewing the reading. The sensor will detect more O2 and the ECU will start dumping more fuel in, more then is really needed.

[@sebastianharrison6118]

These are both great ideas

[@kansasrose2909]

@@sebastianharrison6118 Great ideas are worth noting.

[@mommapanda5736]

@@kansasrose2909 and doing.

[@kansasrose2909]

@@mommapanda5736 😊😊😊

[@kansasrose2909]

Do the gnomes live in Middle Earth like the Hobbits do??

[@mikerafone4736]

Thank you very much. I hope the project is fun for you too!

[@akkudakkupl]

I'd like to see this with classical clutch and just the 5 speed, might be faster due to higher efficiency.

[@smokenchoken1736]

Hes gone over this in previous episodes, these engines dont have a thrust bearing like a car so the tension from a clutch would destroy the engine rather quickly, these engines bearings are made for side loads instead, so to run a clutch would require him to either use his engine to run a secondary flywheel that is just powered by the engine via belt or chain or he needs a whole different type of engine

[@lilshawn2]

the plastic blades, when they moulded them at the factory have a high stress area in the corner. this is caused by the plastic cooling fast on the outside and slow in the middle. the middle shrinks causing the high stress area. if you get some clear plastic cutlery or look at a set of plastic headlights with a pair of polarized lenses sunglasses, you can see the stress areas in the plastic. acrylic plastics are very susceptible to solvents, where if there is a high enough stress moulded into the plastic the plastic will break down a little from the solvent and the internal stress causes the plastic to crack and split. very similar to safety glass or "tempered" glass

[@fnorgen]

Sounds about right. I've had the same happen to the cheap plastic buckle on a shoe when it got a little splash of gasoline. Instant disintegration!

[@izzyplusplusplus1004]

Same principle is what creates the Prince Rupert's Drops.

[@lilshawn2]

@@fnorgen yeah, i had same thing while removing the jewel from an OG Xbox console to repaint it and change it's color. i put some solvent to loosen up the glue residue on the backside before i sanded off the paint... and it literally broke into pieces

[@kansasrose2909]

@@lilshawn2 I come here for the detail and stay for the comments.

[@lilshawn2]

@@kansasrose2909 KZbin comments can be the best comments! ...and also the worst!

[@cmuller1441]

12:35 The 2Cv had a very long life. It started in the 1950's and the last were produced in 1990. The engine has been upgraded several times and in the 1970's the "biggest" one was a 602cm3 and could do 110 to 120km/h (depending of the wind...)

[@cmuller1441]

en.m.wikipedia.org/wiki/Citro%C3%ABn_2CV

[@Heli4772]

i can confirm this :D scary if you reach the speed in an old 2Cv

[@NaN.404]

Grampa in its youth had a 3cv, always told me wind was key, front wind: cruise at 80 max, nice tailwind: you could elongate 4th gear and the speedo woult tell 120 and lets assume it was 100 real !

[@kansasrose2909]

@@NaN.404 I come here for the detail and stay for the comments.

[@mommapanda5736]

@@kansasrose2909 I come for the comments and stay for the lunacy.

[@louisvaught2495]

Fan blade snapping is from solvent absorption. The test you did to check for susceptibility wasn't actually telling you much, because plastic+solvent behavior can be really confusing and weird. Even if it doesn't melt entirely, it can easily soak up the gasoline and change the material properties of the plastic.

[@lasskinn474]

well.. the fan blade. you just stuck your fingers into it while it was on and didn't want to admit it and told your pals it just broke on it's own while holding your bleeding hand in your pocket.

[@ocdman202]

😉😉😉

[@mitchfillbach1115]

SO, there is a really interesting thing that happens when you get ethanol on acrylic. It hydro cracks. If you have seen all of the spit barriers in the stores cracked its because someone cleaned them with the ethanol containing sanitizer. I don't know if this is what happened with the fan blades, but it a possibility. As for the test, ethanol evaporates pretty quickly so if the test sample had been out of the canister for a while maybe the ethanol was evaporated off enough.

[@kirkkohnen5050]

Captain Crunch for breakfast, I can tell!

[@TheOriginalLugnuts]

It’s called crazing and Ethanols and alcohols will do that to Acrylic. The material used for the fan blades is typically a nylon either 6 or 66 depending on the temperature exposure. My guess is there was some molded in stress and the stress was relieved from the thermal shock of the gasoline hitting it.

[@mitchfillbach1115]

@@TheOriginalLugnuts that would also make sense. I am not sure what the mold for the fans looks like but there might be a "weld line" where the blades meet the hub.

[@kansasrose2909]

@@mitchfillbach1115 A light bulb just went off in my head. 📡

[@ocdman202]

@@kansasrose2909 Is it because JImbo is a genius????

[@chris-2105]

I'd assume the heat cycles underneath the hood are very hard on the fan plastic because it's meant to be in a computer case that would generally not exceed like 65-75C max. I hope the water pumps don't have the same plastic for their internals!

[@kansasrose2909]

Me too!

[@WyFoster]

That silicone head gasket, I blew one out almost immediately. I'd say the stock style with some RTV or copper coat will be your best bet. Along with head studs. Those stock chinesium bolts are soft.

[@maxxlr8tion578]

Was also going to suggest copper coat and better head bolts or studs.

[@856Dropout]

Could spend some time cutting one out of some copper sheet. It’s working very well on my high compression YX140. Grainger has high strength bolts at a cheap price com paired to the big name automotive stuff.

[@fixins]

Fan blades may have been already damaged and glued back together? Don't know if gasoline melts CA glue but acetone sure does.

[@NaN.404]

As a non united states habitant, and may i speak for the rest of the world, THANKS for the metric conversions on the edit, yall northamericans have me converting everything in another tab or on the phone to make some sense to view! Regarding cvt slipping and temperatures: i have seen paints at racetracks in pits that dissapear or change color within X temperature is reached, this is applied to disc brakes to monitor cooling, top temp, and whatnot. Im not sure how this paint is called but you paint stripes direct in the edge of the disk or in this case clutch! Also you mentioning removing the gearbox, what about a direct coupling to the honda gearbox, but with a centrifugal clutch, and a one way bearing or sprocket like the ones on the rear of bycicles. The combination of these two may make the gearbox more usable without the need of an axial clutch, just let go the gas, wait for rpm to drop a bit and next gear shoud enter..¿easier? and not waste any precious kg/m on slipping and heating a belt!

[@kansasrose2909]

Hello and greetings to friends around the world. 🌎🌎🌎🌎🌏🌏🌍🌍

[@mommapanda5736]

@@kansasrose2909 The world awaits another great video here.

[@kansasrose2909]

@@mommapanda5736 Have your purchased your breakfast cereal yet??☕☕☕☕👍👍

[@jndmichel]

Cheerio eater here. I have a couple of ideas for why the supercharger isn't giving the response that you expected. 1, It could be parasitic loss from driving the supercharger. Try driving the supercharger slower, or alternately, try to improve the airflow through the head. 2, It could be drive losses through the variable speed clutch. Try replacing the variable speed belt with a fixed speed chain, and use the 5 speed to change ratios. You won't be able to keep the engine rpm steady, but it will help isolate the problem.

[@kansasrose2909]

I have my Honey Nut Cheerios ready....

[@mommapanda5736]

@@kansasrose2909 I like a good cup of coffee in the morning..

[@philmissy1]

I had a sausage roll for breakfast so im going to say the gnomes snapped the blades off.

[@robotcantina8957]

This answer makes the most sense. ... especially the delicious breakfast.

[@mommapanda5736]

@@robotcantina8957 Looking forward to the next build, Robot.

[@mommapanda5736]

sausage roll, yummy

[@sawedoffbastard8078]

'We replaced the crappy gasket with an identical crappy gasket......." 🤣🤣

[@sendit9129]

Not surprised to see the headbolts lost their spec after a run.. We build several engines with ARP 625s that require a hot torque for this reason. My suggestion would be to source a MLS gasket (I found a few online) as well as studs if possible. Unfortunately, clamping force and gasket material are gonna be the life and death of that engine under boost. Luckily, looks like IATs are under control, so as long as you can figure out a way to keep the top-end and clutch happy, its time to add boost and fuel. Also, really good call on the noise interference seen in the datalog- you're a lucky dog it actually showed up there though lol! With a lot of the in-depth electrical diag I've done on vehicles for noise interference, it will set DTCs but the scanner data stream won't show anything out of place due to the refresh rate of the scanner data vs what the PCM is actually able to see. Normally have to use a scope to find those failures.. As for the fan- nothing surprises me anymore when it comes to plastic.. Obviously certain plastics are very strong, and very reliable.. however I see failures almost daily with cheap CAIs, E-fans, etc that just aren't designed to handle the heat in a closed engine bay.

[@cmcbunch]

My father was a old school engine builder. We was very particular about head bolt torqueing. His method was 5 stages walking up to final torque. He would also ALWAYS hot toque and engine at the end of the cam break in, and then check it again hot after a week of operation.

[@kansasrose2909]

@@cmcbunch I really appreciate the old school engine builders. The 5 stages walking up to final torque seem critical. Checking again hot after a week of operation sounds like old school wisdom.

[@mommapanda5736]

@@kansasrose2909 Looking forward to the new build for ROBOT CANTINA.

[@anidiotinaracingcar4874]

It's surprising the supercharger doesn't improve anything at low speed. It's not as if the tires were loosing traction... Do you have a way to monitor the CVT slip? Could this be the issue under 30 mph?

[@fearofchicke]

I’d assume the loss of low end torque is due to the cvt slipping.

[@kansasrose2909]

@@fearofchicke I assume the same.

[@fortisrisuspater]

I LOVE this channel. It’s one of the highlights of my week. Very excited to see this baby hit the highway. I also hope AAA is on standby 😉

[@kansasrose2909]

I am excited too... and yes to tow car on standby for safety sake. 🚙🚙🚙🚙

[@mommapanda5736]

@@kansasrose2909 Looking forward to the next build.

[@kansasrose2909]

@@mommapanda5736 What will JIMBO do next??

[@mommapanda5736]

@@kansasrose2909 I come for the comments here and stay for the lunacy.

[@kansasrose2909]

@@mommapanda5736 😜😜😜😜💥

[@danielsmith-ze3wy]

Good morning everyone hope everyone is having a blessed Sunday

[@twocvbloke]

Some plastics become brittle and fail when exposed to solvents, oils or other chemicals, I remember as a kid thinking it'd be a great idea to lubricate my Lego Technic 8440 roadster with oil to smooth out the connecting parts on the "engine", axles, steering, etc., and very shortly after, the plastic all broke apart and disintegrated, basically cracking up like tempered glass, very weird, and very upsetting that I'd destroyed my best ever Lego build... :P

[@ocdman202]

😉😉😉

[@oddojaggins]

I knew it, the gnomes are loosening bolts on purpose. Since the next episode is #13 perhaps it's time to wage war on the Gnomes

[@mommapanda5736]

War of the Gnomes. Start of another great series.

[@mommapanda5736]

Looking forward to another great video from Jimbo.

[@kansasrose2909]

@@mommapanda5736 🧙‍♂️🧙‍♂️🧙‍♂️🧙‍♂️🧙‍♂️Love those little gnomes..

[@mommapanda5736]

@@kansasrose2909 Do the gnomes live in Middle Earth??

[@notmuch_23]

See if the manufacturer of that gas can makes water cans of the same mold, then if they do, ask them about buying a replacement spout and vent cap for a _water_ can. DO NOT mention gasoline at all! I've heard you can do this with Blitz.

[@limprooster3253]

Have you considered ditching the TAV and just using the 5 speed? Perhaps a centrifugal clutch with about a 2:1 jackshaft from the clutch to the transmission? You'd have to hit every gear but I feel like you're losing alot of power through that cvt

[@justsomepandawithinternet]

It aint a cvt But yeah torque converters probably lose a bit of power Using both a torque converter and a 5 speed is a little redundant Just use one of them to reduce parasitic losses Idk tho Dude has been working on this forever and probably knows what's good for this car

[@beanseff]

he mentioned this a while back. the engine isn't made for thrust applications, ans designing a clutch system would be a pain.

[@dennisford2000]

@@justsomepandawithinternet actually is not a a torque converter, but it is a cvt

[@justsomepandawithinternet]

@@dennisford2000 I see

[@limprooster3253]

@@justsomepandawithinternet Bro... It's a CVT. It's not a CVT like a Nissan used but it IS a CVT. Im sure he knows more about the car than I do, but I wanted to ask. He used to be pretty good about answering questions like this, so he might provide a good reason for not. I mostly just wanted to know if he is just married to the CVT shifting itself.

[@tfs2388]

I really hope you get the gold KZbin plaque you deserve it or a day time Emmy

[@mommapanda5736]

Emmy and plaque, yes JIMBO gets my vote!

[@kansasrose2909]

@@mommapanda5736 Love is in the air.💖💖💖💖

[@devinrussell493]

I think you should replace the Supercharger cooler fans with an electric radiator fan;or replace the two polyurethane plastic fans,with fans made of aluminum.

[@kansasrose2909]

A light bulb just went off in my head. 💥💥💥💥

[@ocdman202]

@@kansasrose2909 Is that because Jimbo is a genius??

[@glennsims66]

Yea, get rid of the plastic as much as possible

[@Entertainment_Enterprise]

Those super Seal head gaskets are amesome

[@TheViny633]

Replace fan and move on with life. I loved the gnomes are sabotaging the car haha and any restriction that can be removed in the exhaust can affect the blower. I’d expect improvements even if small with the 02’s reading properly

[@hellcat1988]

The fan blades popping off might be due to being damaged before you bought it and the gas dissolving the glue they used to stick them back on. I've fixed many a pc fan with stuperglue. Once a blade has been broken, it's not hard for it to come off again at the most random disturbance.

[@hellcat1988]

@@JackHudler Yeah, I'm aware. But he got that radiator/pump/fan combo from the jungle site. There's no way to be sure that it wasn't damaged before HE bought it.

[@mathuetax]

Gasoline has a deleterious (crazing) on some plastics and I suspect that is the issue, but it usually takes longer than 'instantly' to affect common thermoplastics. The Ethanol in the fuel may also exacerbate this. I did not have Captain Crunch this morning so I'm not fully up to steam as of yet.

[@jmuench420]

I think you're right. I've seen alcohol crack some acrylics pretty much instantly. I wonder if some of the alcohol could have floated up to the top making for a higher concentration on that first bit that poured out and just happened to hit the fan, hence not being able to repeat the results by soaking it in more gasoline.

[@kansasrose2909]

@@jmuench420 Member of R. Cantina fan club here. 👍👍👍

[@randr10]

I'm guessing with the very low horsepower and torque numbers you're dealing with, you're probably dealing with drag induced by oil and grease temps in your transmission, wheel bearings and CV joints. I know from doing a bit of hypermiling with my old Saturn that it would get measurably better mileage on warm days for this reason, especially on short trips. Once you've driven enough miles to warm all of those oils up the difference probably becomes negligible, but you're not doing that with this car before your test runs, so that's probably what's going on.

[@ocdman202]

Great comment here.

[@Alex_Miller1980]

Also If you could use an spark plug with resistance they have an R letter after numbers on the NGK's, that helps with interference on the EFI management

[@NaN.404]

Second this, had a yamaha that has tci ignition and for electronoise reduction manual recommended the ngk c"R"7hsa, and the aftermarket one i ended getting in town was the regular c7hsa. Bike ran fine but may messed with the aftermarket immobilizator module making it think i was not there and triggering the alarm, fun discovery :D

[@acurarl9929]

You can add washer to stiffen spring witch will raise engagement rpm

[@midixiewrecked7011]

Plus if he'd get a damn shorter belt.

[@mommapanda5736]

@@midixiewrecked7011 Damn right!!

[@kansasrose2909]

@@mommapanda5736 💖💖💖

[@jeffzekas]

Love this video! Especially mentioning my 2 favorite cars, the Fiat 500 and 2CV. In reference to the Citroen 2CV: the final model of the 2CV could go "115 km/h (71 mph) in 1981" with its flat twin 602cc motor. Actually, the whole little car was amazing and technologically ahead of its time. If you get the chance, read the Wikipedia article: en.wikipedia.org/wiki/Citroën_2CV

[@hugolafhugolaf]

Back when Citroën actually made innovative cars.

[@lutomson3496]

I had a Honda 600 and a few 2 stroke Suzuki in Japan not much bigger engines

[@pierpaoloscian5926]

I have a fiat 500L, 18hp, and it goes happily over 60mph :D but not by much. Maybe I should ask Jimbo for a supercharger advice🤣

[@jackblack2557]

Have u tried a hotter or colder spark plug? I'm just suggesting different small things to see if there's any difference as always love the vids my man keep on keeping on🤘

[@MatthewMenze]

It seems like the 5 speed is doing less and less as you get the motor/clutch better tuned. Is it practical to either delete it, or gut the internals of the transmission to make it as close to direct drive as possible? I image that would save some driveline losses, and a bit of weight.

[@mommapanda5736]

Yes to this.

[@SuperBigdanno]

You can shave the clutch weights to make up different combinations. What you want is to have the engine held at peak rpm/ hp and while Im not sure where that is on your engine I think your close. Secondary should just control up shift and back shift. This can be done with heavier or lighter springs as well as spring wrap or twist and different helix angles, straight or compound angles. Not sure what if any of those secondary parts are available for your particular model secondary though.

[@kansasrose2909]

A lot of this completely unexpected...

[@mommapanda5736]

@@kansasrose2909 I am looking forward to more videos here.

[@mommapanda5736]

It is like a love fest, the JIMBO fan club here.

[@kansasrose2909]

@@mommapanda5736 Love is in the air..💖💖💖💖

[@marksparks8852]

I know you think it was 70 but I'm sure you got o 69 with a 420. Elon Musk is gonna hire you.

[@brucebaxter6923]

Internal stresses from injection moulding, kind of like safety glass or prince ruperts drops. The fuel cracked the surface and, well, you know it goes once a crack starts to propagate.

[@mommapanda5736]

Let's hear it for ROBOT CANTINA!

[@kansasrose2909]

@@mommapanda5736 💖💖💖💖

[@lorenzov9136]

We use to drill out the steel weights inside the sliders to get the desired weight reduction. I would recommend you do the same. For as far as the fan blades, some injection molded parts, especially thin and long parts like fan blades, can have high internal stresses due to cooling too quickly and shrinkage. If it's a stiff polymer and it's hot (probably was) then dumping gas on it which extracts heat very quickly to evaporate, you could cause the part to fail. It's just my best guess.

[@kansasrose2909]

👍👍👍👍

[@Tommy-Tom-Tom]

Your videos are awesome. Always have me cracking up over here. I love the bit about the cereal. Perfect amount of comedy injection for your unique style of video. It's been a blast to watch this channel mature into one of my favorites. We love you guys! Y'all do amazing work!

[@mommapanda5736]

Love you guys too... Cereal is the new comfort food.

[@kansasrose2909]

@@mommapanda5736 I really like oatmeal with banana slices for comfort. Has anyone tried french toast lately?

[@kansasrose2909]

French toast with ham and powdered sugar, yum.

[@kansasrose2909]

I have purchased my breakfast cereal ..... ☕☕☕☕

[@mommapanda5736]

@@kansasrose2909 For me, honey bunches of oats.

[@Commetsgarage]

I’m wondering if you take out the transmission and make a solid axle with a differential somehow and just used to commet clutch as a torque converter it’ll get rid of a lot of weight and you’ll have more room

[@kansasrose2909]

A light bulb just went off in my head, 💥💥💥

[@crackedemerald4930]

those fan blades are electric, so the contact with gasoline sent them into shock. "oh the inneficiency!" they thought, and promptly snapped off.

[@C-Henry]

You can get old fashioned gas can spouts online, if you're tired of the California approved one that seems determined to spill gas every time you use it and leave its o-ring in your gas tank.

[@averyalexander2303]

Or get a No Spill gas can. They are a bit pricey, but also the only decent one I have seen for sale these days and it's very easy to use since it's operated by a button instead of some stupid sliding spout mechanism. I'd suggest trying one if you use gas cans with any regularity, it makes life so much easier and is worth every penny.

[@m.kriddick2731]

3 minutes in and a new video, that 6 day wait by the computer was worth it.

[@mommapanda5736]

Did they slide food under the door for you?

[@kansasrose2909]

@@mommapanda5736 The world is awaiting more ROBOT CANTINA!

[@mommapanda5736]

@@kansasrose2909 Member of R .. Cantina fan club here.

[@timothyhays1817]

Have you provided additional crank case ventilation? May want configur a system off the oil fill. A large inline fuel would work. Pluse kinda act like a catch can.

[@NaN.404]

An ideal spot may be the original governor lever, its not funny to blow seals and gaskets bc crankcase pressure

[@Phantom0fTheRouter]

Warm gasoline seeps into stress cracks, cooling increases density of fuel in the crack causing fluid expansion which finishes off the the blade.

[@mommapanda5736]

I wondered about that.. finishing off the blade you say?

[@Phantom0fTheRouter]

@@mommapanda5736 - would you prefer I said something like "...thereby increasing the pressure gradient within the fracture, percipitating the near instantaneous transmission of the contained stresses throughout the remaining strutural material resulting in apparent rapid disintegration of the forward inclined blade from the greater hub assembly of the impeller?"

[@bgdwiepp]

The car performing better in the heat probably comes down to drivetrain losses; Grease in CVs and wheelbearings is thick, gear lube in the manual trans ( diff) is thin, but thinner when warm all reducing parasitic losses. Warmer temps also generally means suspension components settle better because all of the bushing, rod ends etc move more freely, having everything settled and neutral is very important for low rolling resistance. Speaking of low rolling resistance, heat will increase tyre pressure reducing rolling resistance, so thats a plus.

[@93jummy]

Can also try ATF in manual transmission to lower drive train losses. Some 4x4s here in Australia use atf in manuals so mustn't hurt anything

[@bgdwiepp]

hey jimbo, speaking of fan blades, remove the fan from the flywheel and put an electric fan on the he head, something like a delta tfc1212de. pretty much all of those fixed mounted mechanical fans are super inefficient compared to modern fans, i wouldn't be surprised if it was using up a whole(!) horsepower.

[@ex-engineer6657]

Great episode, well balanced. Thanks again.

[@kansasrose2909]

Looking forward to more from ROBOT CANTINA..

[@mommapanda5736]

@@kansasrose2909 Are we going to see another unboxing video??

[@kansasrose2909]

@@mommapanda5736 🎉🎉🎉🎉🎉Love the unboxing episodes.

[@mommapanda5736]

@@kansasrose2909 A light bulb just went off for me

[@wojciechsikora3497]

Supercharged, turbocharged, intercooled, nitrous oxide injection, forged pistons lawn mower engine 😁

[@1993ka24det]

After fully sheet metaling the bottom of my old race car I noticed better gas mileage, smoother at high speeds and less wind noise.

[@onegreenev]

Fan blades may have already been damaged and had small cracks. When the fuel hit the shock just finished an already started failure. Could be that the fuel caused the area in an already damaged crack swell ever so slightly that it just caused it to pop.

[@lincolnbliss6046]

The fan blade may have already been stressed in some way or maybe even partially fractured and the corrosive addition of the gasoline may have been enough to finish it off. Also I'm a 19 year old from Michigan and am modifying a chevy trailblazer with a stock 4200 vortec with parts from a gmc envoy. My plan is to find out just how much power you can safely get out of an inline 6 with a stock transmission. Also the gmc will likely be used in a demolition derby in the near future. Let me know if you want to meet up and work on a project.

[@54mgtf22]

I’ll go with thermal shock for the broken fan blades. As a datum, my Porsche will do 0-60 in 4.8 seconds and my MG wont do it at all without a very steep hill. Love your work Jimbo 👍

[@kansasrose2909]

A light bulb just went off in my head. 💥💥💥

[@rodgercgreen411]

I'm really taking interest in what you're doing to this little Honda because I am in the process of buying a 1991 Honda Accord and the motor and everything is set up just like yours and gas is it's getting expensive

[@acurarl9929]

Add washer to up engagement cpl tho and remove govnor and use gearing to run up to 8,000 rpm 10,000rpm with upgrades

[@edgysixyearold8694]

Just a guess, but the oil leaks and gasket failures might be because of positive crank case pressure? I'm not sure if those engines come with pcv from the factory but even if so it might not be enough. I'm no auto engineer so my only idea would be a good ol' valve cover hole, unless you could outfit that engine with a catch can or air/oil separator.

[@RadarLeon]

I wonder how a Suzuki Ro6a 658cc engine would work if it could be swapped into a insight, also what kinda mpg does this monstrosity get :3

[@kevingilroy]

All I need to know is. Do you run it through the Honda clutch too? Or do you just speed match shift the 5 speed. Because I want to build one.

[@gafrers]

New project car is a Fiero 🤣 Thanks for adding some SI Units for us non-Americans

[@peterxyz3541]

Fan blade: maybe pre stressed from mould injection, the gas weaken the stress point?

[@rodgercgreen411]

I ran into the same problems with engines won't stop leaking oil and gaskets keep failing I learned to use Liquid copper it helps on selling an engine up you can actually glue a motor back together with that stuff

[@rodgercgreen411]

For your clutch issues if you would use roller weights instead of your pokes Rolla weights will sling in and out a lot faster and more reliable

[@darwinskeeper421]

5:16 Gnome sighting. Beware! 12:51 I can't speak for the Fiat 500, but there are versions of the 2CV that will exceed 60 mph. You seem to be thinking of the 2CV4, which has a 425 cc opposed hemi head twin. Citroen eventually decided that a little more power would be nice and offered it in a 602 cc "bigger block" engine which produced about 30 hp in various guises (this engine was used in two Citroen 2CV based cars, the Ami and Dyane). These cars were apparently capable of reaching the mind numbing speed of about 70 mph, in spite of the car's less than stellar aerodynamics. I have run across two sets of numbers for a 1985 2CV Charleston that put the car's 0-60 times in the low thirties. The Automobile Catalog website says that the top speed is 71 mph and a 0-60 time of 31.7 sec. I am not sure how trustworthy this site's numbers are so I have also found a test from England's Motor magazine that gave a 0-60 of 6.2 seconds. Given that the 2CV has similar weight to the street legal go-kart (1290 lb according to Automobile Catalog) and a laughable .51 drag coefficient (.51 according to Automobile Catalog), I'm guessing your supercharged cement mixer engine is not quite as powerful as the 29 hp 2CV6 Charleston and depends on the Honda's superior aerodynamics to make it up to 70 mph. A more efficient drivetrain on the 2CV may also have some effect. www.flickr.com/photos/triggerscarstuff/7351862548 www.automobile-catalog.com/auta_details1.php

[@ferrumignis]

_"I have also found a test from England's Motor magazine that gave a 0-60 of 6.2 seconds."_ I think we can safely say that figure is optimistic 🤣

[@darwinskeeper421]

@@ferrumignis Ouch, the actual figure was 32.1 seconds. I don't know how I mistyped that, and I don't have any gnomes living in my house I can blame this on.

[@NaN.404]

@@ferrumignis Think metric! that was 60km/h or 60mts in a track lol

[@kansasrose2909]

@@NaN.404 Yes to metric👍👍👍!

[@ProDigit80]

No Capt crunch, I had some "Love Crunch" this morning, which is kinda the sidekick of Capt'n Crunch, and she's telling me, that most likely the blades have been hit by a small pebble, or a bug during operation. The 2CV started out with a 9hp 375cc parallel twin engine, but ended up on their last models with a 29HP 600cc engine. That engine was able to do 65mph.

[@kansasrose2909]

Sounds like Valentine's Day at your house💖💖 She sounds sweet and smart. Every day is a holiday when you are in love...🌹🌹

[@mommapanda5736]

@@kansasrose2909 I am buying my breakfast cereal now.

[@JuanDiaz-uj7wg]

Bro what would be cool is seeing the exact engine put to getting as like if it’s a 860cc

[@facksmasheen]

I cant explain the fan blades cracking, but I can recommend getting some industrial fans to replaces them. Noctua makes some very robust fans, fiber reinforced blades, water/oil/dust resistant, etc. Not cheap, but maybe worth considering if you are still going to use that little pc cooling radiator.

[@gutserker]

Unfortunately the way that cooler is designed combines the motor for pumping and fan in one unit. As-is the whole unit is compromised, but should™ last the life of this experiment

[@kansasrose2909]

@@gutserker A lot of this is completely unexpected.

[@mommapanda5736]

@@kansasrose2909 We have come to expect genius from JIMBO.

[@mommapanda5736]

[@jadesaber99]

could be the fact that it did react a little with the plastic and where the blade meets the hub is just a high stress point

[@timm5970]

I think when u put gas on the fans it activated some uncontrollable gnome magic that made them pop off

[@mommapanda5736]

I believe in magic, and mischief too!

[@mommapanda5736]

Love those little gnomes.

[@kansasrose2909]

@@mommapanda5736 🧙‍♂️🧙‍♂️🧙‍♂️🧙‍♂️🧙‍♂️Do they live in Middle Earth with the Hobbits??

[@mommapanda5736]

@@kansasrose2909 Yes, but in a different neighborhood, most likely.

[@mommapanda5736]

same neighborhood, but different zip code.

[@natebean151]

They make copper head gasket help with burning head gasket

[@twocvbloke]

Oh, and a 2CV6 has a 0-60 of 31.7 Seconds, probably slower on a 2CV4 (435cc), and less so on older (425cc & original 375cc) which really couldn't get past 50mph, so still got some ways to go for beating a tin snail, maybe time to take a tin opener to the roof and replace it with a canvas top for weight reduction... :P

[@mommapanda5736]

A lot of this is completely unexpected!

[@michaelmysicka1291]

I humbly suggest that you remove the coil boot and spring and connect your spark plug wire directly to the coil terminal.

[@robotcantina8957]

Good tip! I'll give that a shot. Thanks!

[@kansasrose2909]

@@robotcantina8957 Robot, we love this channel.

[@mommapanda5736]

@@kansasrose2909 me too.

[@kansasrose2909]

@@mommapanda5736 Love is in the air...💖💖💖💖

[@saltzen961]

I was more worried about the fan now being out of balance . The resultant strain on the Universe could have dire ,unforeseen consequences .

[@kansasrose2909]

Are you ready for the massive heat dome this weekend??🛎️🛎️🛎️🛎️

[@mommapanda5736]

@@kansasrose2909 not really.

[@mommapanda5736]

I should make a big Long Island ice tea and sit back in the shade..

[@jpMcnab]

MLS head gasket and head studs please. Compound turbo! The blades came off because of the adhesive used ?

[@Itmakesyouthink]

My gripe is Disney, because in one of their so called nature doco's, back in the 60's, they called our (non yellow) big bird, "emoo", it's bloody pronounced, "Emmmmmyou", mate! Get it right, you yobbos....

[@mommapanda5736]

My gripe is Disney too! It is so smoggy in Disneyland in Ca. my kid's eyes were watering. And what is wrong with Mickey Mouse and those ears.

[@adamklosterman8960]

Don't know if the fans were turning or not, but if they were, impacting the gas flexed the blade enough to hit the fan frame.

[@lennym1273]

Wouldn't it be easier and lighter on the motor and clutch belt if you use the Honda trans to shift like a normal car, you know go threw the gears?

[@siraff4461]

I wonder how dumb you could make this thing and still get to 70mph? Like a larger suck through carb, thicker or double head gasket and more boost? I know its the knuckle dragger way but it would be interesting to see just how far off the old "big hammer" methods would be.

[@kansasrose2909]

This is a good comment and good questions...👍👍

[@thedude7726]

Lets go!

[@mommapanda5736]

Looking forward to the next project from ROBOT CANTINA!

[@kansasrose2909]

@@mommapanda5736 Love is in the air..💖💖💖

[@X7rocks]

Is it a red na miata :P And those dastardly gnomes causing issues at the end 😤. I feel 0-30 and up times can be made a bit better if the dip angle of the opening bottom portion of the pulley wasn't so steep. I know on 2 strokes scooters with cvt.we don't want to drop out of our powerband so we usually find driver pulleys with smoother transitions. As for the fan. Could the gas/heat/shaking cause the death of one of the fans?

[@noahandthefurry4573]

just take a flathead screwdriver and pop that stupid little red thingy off the nossle of the gas can. you will thank me later. it basically fell off of ours and we havent looked back. i bet whoever thought that was a good idea to implement is a pencil pusher who never used a gas can in their life.

[@kansasrose2909]

👍👍👍👍

[@ghosttheoremproductions5469]

Poorly done injection moldings will have internal stress. The rapid cooling from the quickly evaporating gasoline likely shocked things enough for the stressed areas to release that stored tension.

[@kansasrose2909]

The world is awaiting more from ROBOT CANTINA. .

[@mommapanda5736]

@@kansasrose2909 and more JIMBO.

[@mommapanda5736]

Member of R. Cantina fan club here.

[@kansasrose2909]

@@mommapanda5736 💖💖💖

[@joeyholthusen6495]

Curious to do a mpg with a small twin diesel engine 700cc or so...

[@nathansmith3608]

re: fan blades breaking on exposure to gasoline, my guess is either (1) the blades were glued together w/ gas soluble glue for w/ever reason, or (2) a tiny crack had developed in the plastic & filled itself in w/ brake dust/pollen/oil/grime/etc., & that material absorbs gas & swells, breaking the plastic on contact

[@xxshadowcrypticxx7689]

You should return with a built 670cc v twin 😅

[@NickTheViewer]

the fan blade thing is most likely a combination of thermal contraction/expansion and just purely bad plastic, maybe there was a hairline crack, maybe not, could have also just popped from some weight dropping onto them, liquids weigh a lot would recommend getting something like noctuas industrial fans, robust blades and great perfomance

[@brandonupchurch7628]

Were the fans warm and the cool fuel hit them and rapidly expanded off of them further cooling them and caused them to crack.

[@mommapanda5736]

Are you ready for the thermal heat dome this weekend??

[@wesleyreed3038]

I wonder if you do a larger diameter exhaust off the engine ( header) if it will help the engine at all, I know the correct tuned about of back pressure is important when making power and making the engine more efficient. It's gotta push the exhaust a long way, and through a long muffler does that effect the back pressure? Would a more open shorter glass pack muffler help? With the super charger bringing in more air I think if you port and polish the head with a larger exhaust you could produce the same power level at a lower boost level? Saving head gaskets? These are questions I've had watching your videos and very interested in what you think!

[@knurlgnar24]

From working with fans in a professional environment one of the primary failure mechanisms of fans is the molding process leaving the plastic highly locally stressed. The glass fill may also be poorly controlled or too much regrind included for cost saving purposes. Nearly all cheap fans have blades that are poorly molded and can snap off at the most inopportune times, kind of like how an old rotten tree might fall down on a windless day when a storm passed through only a week before. I wouldn't think too much into this as it's a common failure in inexpensive or poorly sourced fans. You probably just thermally shocked it or something of that nature. There's a reason high quality fans cost so much more than the low cost ones. Any quality manufacturer tests the crap out of any fan they source and finds those flaws before it ever makes it to the customer. You don't have that luxury!

[@robotcantina8957]

Thanks!

[@mommapanda5736]

@@robotcantina8957 Looking forward to the next build, Robot.

[@kansasrose2909]

@@mommapanda5736 I have already purchased my breakfast cereal.

[@kansasrose2909]

Love is in the air💖💖💖💖

[@mommapanda5736]

@@kansasrose2909 It is happy hour yet??

[@easymac79]

12:48 As much as I love manual transmissions, DELETE it! Dead weight and mechanical losses. Taking up space for more kit.

[@ProlificInvention]

Hey man, huge fan here: Was just thinking and I'm sure it's been mentioned but in future videos if you upgrade to the 670cc 22hp HF engine it might be more interesting as well as useful to some people as that might be a legitimate engine swap for certain vehicles, albeit quite underpowered but definitely an option with new engines costing a literal fortune, mechanics shops booked for months ahead of time, and gas being over $5 a gallon-I could see some enterprising poorer folks dropping in a 670cc and just rocking it. Anyway, it just popped into my mind, have a great day and I appreciate all your videos.

[@MrJmbo281]

It would probably work fine in a subcompact like a Ford Aspire. It only had a 1.3 to start

[@ripemelon393]

The 670 is in the works!

[@lsrengines]

Definitely with blower cars you want to have a richer air fuel ratio when you're under boost more like high 11s or low 12s. Because the fuel is also a coolant on top of everything else. It also differs if you have a fuel with a high ethanol content for higher octane or low ethanol

[@kansasrose2909]

Good point here.

[@mommapanda5736]

@@kansasrose2909 Looking forward to another great video here.

[@kansasrose2909]

@@mommapanda5736 JIMBO usually puts out a video on the weekend.

[@mommapanda5736]

@@kansasrose2909 Robot, we need more from your Cantina!!

[@JoseSilveira-newhandleforYT]

I'm not an expert, but the fan blades cry instant thermal shock (probably would do the same with water). Great that the clutch problem is fixed (sort of) and the CKP gremlin is gone. For every new episode, there's some new unforeseen hurdle(s) - that's what keeps it exciting! Keep pushing forward :-)

[@anthonyvolkman2338]

That is literally due to the rpm being so high, when it smacked the blade (yes it's like you smacked the blade due to the high rpm), it exploded.