S4 E28. We install dual carburetors on our 670cc predator powered Renault R10

[@darwinskeeper421]

The Predator powered Renault is on the road again? Yes! Yes! Yes!!!

[@Bartskarts]

"While it's still legal to have an opinion"... Makes me sad how true those words are..

[@4saken404]

If you ever get a lid to fit over the back you should put a little fake engine up in front for when people ask to see it. Something like a stuffed animal hamster in a wheel. 😁

[@robotcantina8957]

That would be epic!

[@jeremyshideler4187]

Yes for the next step. Split the case!

[@belyear]

Delete the compression release.

[@derkeksinator17]

Yes! I know the hot starting issue from 5cyl deutz diesel engines.

[@pancudowny]

...And maybe look into a 265-equivalent cam for it!😉

[@PoXFreak]

I would add just a little more valve lash on the exhaust valves from their stock position and see how low it runs before getting choppy. That's just my inquisitive, experimental mind doing it's thing again...

[@belyear]

@@PoXFreak Not a bad idea, honestly

[@twocvbloke]

I'm guessing the EGT difference is that one carb is supplying less fuel than the other, thus causing ot to run hotter on one side, one of the joys of balancing and tuning dual carbs there... :P

[@whitlcj1]

I wonder does he know you're writing comments here. He'd love it

[@Dis-Emboweled]

Interesting thought. Jimbo would have to try to run the predator on one cylinder for a short bit to check, or add another wideband and set them before the split

[@Giuliana-w1f]

​​@@Dis-Emboweledthat would just bypass a lot of air through the other cylinder, and it wouldn't measure right. The best way would be installing the wideband higher in each cylinder (one at a time), and then plugging the holes

[@no-damn-alias]

These engines come with unsymetrical jetting because of that reason. The air column or its inertia is the reason

[@dennisford2000]

@@no-damn-aliasas well as the exhaust…

[@Jools-j2l]

My favourite of weird car channel, definitely french approved!

[@thomasbouteille2842]

les francais trouvent ca très bon, je dirais même, honhon les bouffeurs de baguette

[@robotcantina8957]

Wow, thanks!

[@gravydavy4188]

Thanks for the videos, maybe one day you'll put this engine in a bike frame. 🙂

[@5roundsrapid263]

C’est si bon! ⚜️

[@speedrocket9238]

It is definitely Illegal to have an opinion in France, even about this car.

[@darwinskeeper421]

Should you continue messing, I mean experimenting, with the Predator powered Renault? YES!!!

[@normandalgarno3242]

My Grandfather had a new Renault 10 back in the sixties. My big memory from the day was, as a teenager I could lift the front off the ground, and I'm not a big boy!

[@JosephArata]

Biggest difference with air cooled gasoline engines, is the AFR usually needs to be more on the "rich" side to keep combustion temperatures down so the engine doesn't overheat and seize up. Liquid cooled gas engines tend to make the most amount of power at 12.5:1, but you might be looking at 12.2:1 or 12:1 for a air cooled engine, just to control combustion temperature. If the air cooled engine has high compression, you're going to have to run the AFR in the 11's. There are some naturally aspirated VW beetle engines that people have built with 11:1 compression and a high lift/high duration camshaft that they had to adjust fuel AFR to 11.5:1 to keep combustion temperatures under control, but it makes really good power for the light weight beetles they're installed in.

[@Terran.Marine.2]

Cardboard aided design!🙂

[@darwinskeeper421]

The EV conversion guys use this version of CAD quite often. Its great for mocking up battery boxes.

[@eriklarson9137]

I have never head that before. For the last 30 years. Neat.

[@samteks125]

​@@eriklarson9137 Three words: Bad Obsession Motorsport!

[@robbamford4134]

You make a lot of wrenching and thought look simple!

[@robotcantina8957]

Thanks!

[@walter2990]

You made my heart feel a small lift, with the subtle VGG references! The Lone Wolf 2000, "bring the thunder", made me glad that I've found your channel! You're obviously a very smart engineer and I'm very humbled by how you're able to explain what you're thinking and doing to your projects, to a simpleton like me. Stay safe, stay thirsty my friend!

[@BrendanJWalker]

Merci messier "Le Jimbo"

[@ex-engineer6657]

Thanks for the gnome visit.

[@MrTacklebury]

Most definitely continue. I get a gas out of seeing this rolling with that little engine. My dad, grandpa and I made a motorcycle which would take grandpa to the back of the 80 acres with a 6hp little motor. It was weak, but it was a fun project. I would love to do something like this with one of the original Honda Civic's, but every time I find one, it's gone before I can get it. lol

[@walter2990]

Didn't the original Honda Civics use a 750 Honda motorcycle engine? I thought that they were such an odd arrangement for a car, but they worked!

[@turtlemann14]

sounds like a heavier spring on the compression release is in order. 950rpm seems pretty high for a compression release, you'd think it would kick out around 500 or so.

[@TigTex]

Agreed. Instead of removing that feature, tweaking it would be the key

[@jjsledneck]

I was thinking grinding on the weight.

[@jamesgeorge4874]

I love that you are running a wide band O2 on a Predator V twin. Nothing beats knowing real time AFR's when fiddling with engines.

[@BruisersBeaters]

You're an excellent teacher with the way you explain stuff. You leave out the little stuff and focus on the most important parts.

[@noyopacific]

I enjoy watching the way you flip all the switches before you start the Renault. An overhead bank of switches would be very cool, even if they served no actual purpose. Thanks for the video !

[@gdt1410]

YES!!!! BREAKFAST BURITTOs, COFFEE, AND ROBOT CANTINA!!!!! Must be a sunday :)

[@Steevo69]

I want a burrito, green chili smothered….

[@Loki1620]

Your added tips, like the diagram for your fuel system, is great. These kind of things is why I have followed since episode 1!

[@Terran.Marine.2]

Small pickup trucks from that era seem to last quite a long time.

[@Clearanceman2]

Outside the rust belt.

[@Terran.Marine.2]

@@Clearanceman2 I had one with over 275,000 miles in Michigan. The Fords and Toyotas also lasted quite a while.

[@Theonixco]

You couldn't kill them.

[@eriklarson9137]

@@Theonixco That's why you are still driving one. Right?

[@robotcantina8957]

Most of the S10's I looked at had a lot of rust. This one was from the deserts of California. Its in good shape, but nearly everything has to be replaced because it sat for so long.

[@hubertcornett7]

That old Renault was the only reason why I pressed that subscribe button last year ❤. There's still some of them driving around in Denmark, but of course, they're originals.

[@paulhall170]

You need to remember that when this was a current model, Renault was building them by the truck-load for families; mum, dad and a couple of kids at least, you needed four doors.... But, yes, of course, please keep working on this unique, fascinating project!

[@Davide0033]

"bring the thunder" gotta love VGG references

[@fortisrisuspater]

So happy to see this back on the channel! I’d be interested to see this with EFI.

[@chaseychaseum5366]

Love the nod to Derek from VGG! Well done.

[@laserbait]

"Bring the thunder?" LOL

[@thisnthat3530]

In stead of removing the compression release entirely, why not tweak it to disengage at a lower RPM? That way it'll assist the starter to get past that first compresseion but allow for a lower idle.

[@martin-vv9lf]

yeah it's struggling while starting, i would be slow to remove it incase the starter burns out. maybe you could make it manual, that's how my dad's old single cylinder diesel steyr tractor was setup.

[@Spudz76]

@@martin-vv9lf Yep, compression relief cable, or solenoids.

[@redlock4004]

J'approuve votre bizarrerie et merci pour la superbe vidéo !

[@scottwright7599]

Greetings from Australia, My Little 1968 R10 could do 110klm /hour, it was quite scary at that speed. So i would cruise in the 80 to 90klm /hour, I passed my licence in it back in 1986. Lovely to see you doing an amazing job keeping it on road

[@bborkzilla]

I'd love to see more on the '89 S10 - I have a '88 base model that I've been told several times belongs in a museum!

[@robotcantina8957]

Soon, I'm still trying to find the time to finish it.

[@sienile]

15:00 - Wow that sounds great for a first start of an oddball project engine. Sounds very healthy even with the high idle.

[@reverse_engineered]

I used to swear by manual transmissions. Most automatics I've used wouldn't shift when I wanted them to or would take a long time to shift. I've used CVTs on ATVs and those were fine, if a little weird. But now that I have an EV, switching gears isn't a thing anymore and I don't miss it. It's so nice to put the pedal down and just have constant torque without power bands and gear shifts.

[@notanavrageloser]

Same. I went far out of my way to drive stick shift whenever possible. I had two old Toyotas that I converted to manual, and I had nearly everything to convert my Monte Carlo SS before I sold it for a more practical car. Then I bought a Chevy Bolt. I’m done shifting now 😅

[@ygorlhano]

It is nice to see the old Renault back. Waiting for the videos on the S10!

[@tfs2388]

The r10 is back what a good day

[@twentyrothmans7308]

Those Kevlar sleeves are genius.

[@91CavGT5]

I have a pair and have used them for years. While they are a bit itchy, they also can help prevent burns while working in hot engine bays!

[@robotcantina8957]

Indeed, they are awesome!

[@MistahMatzah]

Those bends right before the carb throats are going to create uneven air pulses which will result in uneven mixture. You want the airflow into the throat to be as smooth as possible - that's why we use velocity stacks.

[@pancudowny]

"It reminds me of my dad's 327 Impala on a hot day... but things were different back then." Yeah, there were...! The 327 ran a 10:1 compression, and the starter on a SBC was known for suffering heat soak from the exhaust, depending on how it was routed or the design of any headers installed by the owner.

[@robotcantina8957]

The good old days.. cars had real engines for sure.

[@lettuce7378]

@@robotcantina8957 cars these days have far too many electronics. We're past the days of cars that had little more than an 8 bit microcontroller for an ecu and could get 40+ mpg while still passing emissions

[@thomasknobbe4472]

I think the Dad sneaks are the most appropriate footwear when operating a white four door Renault. It does not get much more dorky than this. Amazed that the car sounds so good when the new carbs are just installed without any extra tuning. You rock chalk jayhawk!

[@doraexplora9046]

Wow.. Lovely little project. I love making small engines 'GO'!

[@fuhkoffandie]

Oh my Geez, it's the Putt-Putt!!! When I was 5 years old, my dad worked for Eastern airlines, he repaired all the radar screens... One of the cars he had, was a little Renault, just like this! Must have been a popular color, too, cuz ours was that same dirty white😂

[@PetesCreativeRecycling]

I definitely tune my aircooled car's engines by ear. I used to use worry gauges but have since removed all of them and only use the stock OIL and GEN dummy lights. No more worries!

[@robotcantina8957]

I totally understand. Tuning by ear and feel is the way to go. I'm a little bit more curious and I want to see the numbers.

[@johnsnook2358]

I always enjoy your videos, and your sense of humor.

[@jeroenmiggels4629]

11:59 I Iove the way you snip off excess zip-tie length. Using this kind of cutter leaves no sharp edges. Which is good, since you have already enough things to injure yourself inside the engine bay.

[@510six]

Years ago when wideband O2's were $1800 Horiba units , we tuned with a combination of a narrowband O2 with an EGT . The first wideband (a Tech Edge Unit from Australia) seemed like magic, especially in conjunction with the EGT.

[@nodrug2]

Yes go to the next level in experimenting. I really like this little project.

[@AB-C1]

I saw the Car, clicked the video, watched 1minute 28seconds and Subscribed! Love this project! Very cool.. 👍🏻😎🏴󠁧󠁢󠁥󠁮󠁧󠁿🇬🇧

[@pixels2polygonss]

I’m loving the dual carb set up and it sounds happier too! She sounds like she want to pull harder

[@-aid4084]

HAHA I was waiting for this upload! A couple of hours ago I was just thinking it's due for another Robot Cantina video

[@kipbreitmeyer8517]

Did not know there was kevlar sleeves out there.I will get some.I thank you very much

[@olivierroy1301]

It's good that with the cvt it gives you a chance to rev the engine despite the absence of an acceleration pump.

[@Patches-vq8cd]

Glad to the the renult on the road again! Iv been here since episode 8 season 1 I think! Loved every episode since! Keep up the great work

[@rjung_ch]

Yes Jimbo, take it to the next step! An outro gnome as well 🙂

[@nicholascook9584]

We definitely need more on the renault, but watch that heat man

[@PaulinesPastimes]

I have really enjoyed seeing the Renault again, excellent video and the twin carbs show promise. If for no other reason that there is now clearance to put the engine lid back on. I am hoping that further experimentation is a forgone conclusion. 😊👍

[@johnspagnola4020]

This is my fav series glad you brought it back

[@neile4580]

The extra power is noticeable and impressive.

[@QuantumLeap83]

Garage54s video from yesterday may interest you, even if you never duplicate their experiment. They built a similar drive setup for a Lada, but in the place if a CVT they installed a torque converter and pump from an auto. The pump is driven by the flex plate, and the TC is filled through a bung they welded in the TC body. It drives similarly to the Renault, but they do need to intall a driveshaft brake to stop the TC at idle to shift into 1st or Reverse. Once on the road its shifts clutchless. May he worth looking into for a future vid one day

[@briankuhn7396]

This would be a great addition to this crazy setup. I wonder what that would do to reliability.

[@sabero5668]

@@briankuhn7396 It would be great if he could get it to mate with the stock trans, and idk if that TC is going to put a thrust load on the crank but I don't think these Predator engines have thrust bearings, the rest of the lineup does not. Those 2 factors are 99.9% of the reason why people use CVTs on these engines, you almost have to.

[@QuantumLeap83]

@@sabero5668 also the TC pump would eat power, even if everything else was ideal. The Lada engine has like 80 hp so it's not a big deal. The pump would probably take a third of the power the Predator makes. Might be neat in a future build, tho.

[@Oddman1980]

Instead of removing the compression release doodad, see if you can just add a heavier spring. I did this to a Suzuki DR650 that had a most similar idle problem, the compression release spring had become weak.

[@wildmanmo37]

LOL YOU live in the town I grew up in. I can tell you a lot about that place. If your around 51 years old we probably knew each other. I still have family there. Keep on keeping on. love the videos.

[@paulstatham8665]

Next step please . Lots of fun as always . Thanks Paul from Dorchester Ontario

[@theyakester]

I absolutely love appreciate these videos and I would love to see you getting rid of the pesky compression relief crap.

[@d8vidd8vid]

Very encouraging results, take it another step or two further

[@davidkgreen]

Actually owned one of these back in the day.Great gas mileage and winter traction.The shifting and the heating system were awful.The seats were amazingly comfortable for the time.

[@Mopar-Pioneer]

Have loved this series since it started ! but for heaven's sake sir, get to the final vid and stick the turbo on it like you have intended all along !!!!😁😁😁

[@alanmoore78]

10:55 CAD (cardboard aided design) is great until you discover Ram Board Pro Sheets *shudders with joy*

[@dragonhealer7588]

Loving this! Remote mic to the engine bay will work wonders😊

[@Paulman50]

That's the carb setup that I like. The afr would be good at mid to low 13s, that's pretty much depending on the engine temperature. The extra fuel is useful for cooling.

[@animapulcra9205]

Next thing on the todo-list is some alpine serpentine Kentucky roading with this little miracle of well behaving French baguette.

[@Cowboy.underwater]

After all, this engine IS French, and they do love putting things in the rear. Missed a good opportunity there Jimbo.

[@georqedubyakush6066]

The CVT Hybrid Trans is awesome. A high rpm 670 build might be a fun way to take advantage of being able to basically stretch each gear if you felt like getting froggy with it

[@anunnakielohim2727]

around here the metric system has been slowly inching up on us.

[@robotcantina8957]

LOL

[@TheColorsInGreyLife]

Honestly, happy to see this come back! I really liked the small diesel engine stuff and washed to see you use advanced timing of a spark ignition with propane or something like that with the direct diesel injection set up to inject just before top dead center (but a little further because it's going to get too much head pressure and blow a gasket) to further give time for burn using a very advanced ignition timing for the propane to increase nox, that then helps burn the diesel, but I was also hoping for a Ducati rocker arm (desdromonic) second injection pump for the diesel to further burn things 😈you need to cool that injector anyways lol. A second blast of diesel should help. As for this engine I was really wondering if it would be possible to to mix liquid gas propane injectors to cool the air temp going in, then lean out the afr! Well that and what turning the engine fan cooler into a compressor once enough airflow under the car gets pulled up into the engine could do, and if you have injectors (a pulsing relay timer kind of thing, I call them macros of the analog world they just fire of a electrical signal at a constant rate timed for a specific amount of duration and pulse sequence 😁👍) of course you can feed it just fine she'll a "dishing out" of the piston heads and a little port and polish. Maybe a little head and valve "hemisphering", huh huh? Anyways thanks for the video upload, it was very nice to watch and I really enjoyed the jokes and how nice you were 😊

[@THESNAKE8]

You should run the crank case vent tube to a Venturi on the exhaust. Very easy to do, you can buy pieces of pipe cut appropriately or you can make your own, VERY simply, and you’re exponentially more than capable of doing it.

[@franknukemcomegetsome2744]

Love the vice grip garage, Derek reference!!!!👍😹

[@Mamalian-sq3jm]

Red VW MK1 Jetta spotted on you property! SPLAIN! You're holding out on the REALLY cool cars!

[@Jeekinz]

For the throttle bracket, you can use a solid bracket just elongate the mounting hole on one end along with a shouldered bolt.

[@halo3kings88]

your videos are inspiring me to do this to my 72 honda n600

[@mike_oe]

Yes, ditch the compression relief mechanism, pls! Great episode, btw!

[@edradtke287]

I love this car as it looks much like my 67 NSU Prinz I had in 74

[@schmutz1g]

Been waiting ages for this car to come back!

[@garboui1]

A simulated gravity feed could be created with the the pump and no need for the regulator. The carbs can be fed from T's from a feedline run from the bump to a higher than carb elevation. Past the tees the fuel line runs to a higher elevation where theres another T to provide a vented return so that fuel isn't siphoned.

[@cwthemachinist]

Build/take from a motorcycle and install a disc brake system on the CVT output shaft that's coupled to the transmission. Operate it with a motorcycle hand brake mounted on the 4 speed stick shift. When the car isn't moving you can use that brake to stop the trans input spinning and get it into gear. No messing with compression release and most likely causing yourself starter issues.

[@brownwrench]

Thanks for spelling "dual" correctly.

[@VirtualCryptid]

Glad we got another one from you

[@buildingracingvideos4714]

I am currently using one of those cheap regulators with a gauge, and they do work.

[@hankcuccina5260]

A great video and well edited, thanks.

[@HOLY_FRIJOLES]

I had an s15 jimmy with a 350 tpi engine. I loved that truck.

[@joshbrekke6374]

While it’s still legal to have an opinion, EXACTLY!!! Nice work!! 😉 Definitely remove the Cam junk so it runs better. I feel it’s a very important fun to look at vintage fuel saving commuter car. Honestly I would personally be proud to own once all dialed in, almost there!

[@Jeffer54Jeff]

Keep going, it's getting to the interesting point!

[@leifvejby8023]

That CVT-transmission makes it sound like a DAF!

[@shredandenjoy7311]

For the decompression cam stuff, I believe you can adjust the weights on them to adjust at what RPM it does it's thing. I forget if it's lighter or heavier though that you want to go to get it to open/close at lower RPMs or not. NOTE: Adjusting may be just as simple as grinding material off, or tacking more on!

[@timothyprice5240]

I'm so pleased to see you're working on the Renault again. I'd love to know its top speed. Purely for measuring that, please can you consider putting extra weight in the trunk to improve its stability at speed in cross winds.

[@flyonbyya]

Those kevlars are a great idea!

[@Chaley72]

Good to see the R10 alive and kicking. I am hopeful that little truck is going to be an LS10…

[@actionjksn]

Give her some boost,a nice little turbo charger is just what she needs. Someone else on KZbin did put a turbo charger on a Predator engine, so it's definitely possible. Keep the pressure relief, but modify it to kick in at a much lower pressure. You could also install a larger alternator and some extra batteries and install one of those electric powered turbos. This would be a very fun modification and you would really be able to tell the difference. I think those electric turbos are pretty cheap and they are definitely easy to install.

[@vanceblosser2155]

A note about it getting scary at 60+ mph - tire pressures are critical to this, and due to the weight bias at the rear the front pressure was pretty low (< 20 pounds). We owned one of these in the 60s and my Dad took it to a regular tire store to have a tube patched after he had a flat. Michelins in those days had inner tubes. As soon as the car got up to speed he scared himself silly. I was with him and had him pull over. The tire shop has put about 35 pounds in each tire! I let them down to the specs in the owner manual and it handled fine afterwards. Can't say that's your problem as due to the age of the car a lot of other stuff could be the issue but it's a simple and free check!

[@Big_Blok]

Not sure if you’ve done a cam, rods, and a flywheel yet, but if not, those alone with head porting will make a huge difference. If you have the extra funds, get high compression pistons and do a little head shaving.

[@s.b.2088]

Beautifully tidy installation there, looks better than my daily driver. ;-)

[@mrjlarsen]

Can't wait to get off work and watch the video 😊