S2E16: We deactivate cylinders on our Saturn and test the car for performance and MPG

Season 2 Episode 16 . For today's experiment, the crew at Robot Cantina's workshop try deactivating multiple cylinders on the Saturn coup. They first try running the car on two cylinders, then they try three cylinders, finally they go all out and run the Saturn on a single cylinder. They test the car for performance and fuel economy.
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

[@flb78]

The oil burning at the beginning of the 3 cylinder mode is because of the oil being pulled up past the piston rings in 2 cylinder mode. The piston is still going up and down but with the valves being shut there is vacuum and compression still being made, but it's going past the piston into the crankcase. I would also remove the spark plugs after removing the lifters.

[@grammesser7362]

Beat me to it

[@RayleighCriterion]

I ran my V8 without part of a sparkplug that broke upon removal (I didn't have an extraction tool and the hardware stores were closed). I disconnected the fuel injector and ran the engine so I could park my car in the garage, and while running there was a serious put put noise during the time the cylinder was rising. It was quite noisy without that sparkplug. So I doubt they could run two cylinders without sparkplugs.

[@rydplrs71]

Yes compression and vacuum are parasitic on the energy output of the running cylinders.

[@tslim250]

yep, thats exactly whats up

[@ferrumignis]

No, removing the spark plugs will add significant pumping losses, absolutely not a good idea. There should be zero net pressure in the deactivated cylinder, the energy put into compression is put back in during the down stroke, so power loss for this is very small. Removing the spark plugs means you are expending energy on both strokes.

[@yodasbff3395]

Interesting experiments, 👍. You torture those poor Saturns like Garage 54 abuses their poor Russian Lada's. 😢

[@Man_TM]

😂😂😂

[@Man_TM]

@Gibbon 😂😂😂

[@gabrielv.4358]

@Gibbon Just say to the editor of G54 to fix that

[@addo9697]

yeah and he keeps a formal type of talking that is clear and easy to understand for someone learning language and the topic like me

[@maszkalman3676]

well at least millions of ladas were built saturns are kinda rare...

[@IVloses]

Reason you were burning oil is because when the cylinder is deactivated oil starts to pool up in the cylinder. A big reason why GM has a time limit on how long DoD/AFM can be active before disengaging. With you driving it for an hour or two straight I’m sure there was some decent oil in that cylinder.

[@brianhunt6943]

Yep my 2008 LS4 with AFM was notorious for the white/blue/grey puff of smoke when switching back to 8 cylinder mode. 27MPG in a v8 sedan but not enough to have everyone behind wondering if my car was falling apart.

[@RubenKelevra]

Wondering why they not just open the inlet and outlet ports in a 2 stroke fashion and turn off ignition and injection. This way there's not so much suction going on and the oil won't collect in the cylinder.

[@1234567890CAB]

Came here to say the same thing

[@brianhunt6943]

@@RubenKelevra most cylinders have interference fit on 4 stroke so while you could open the valves you need to make sure they are closed at TDC. Much more complex as well because you would need a VVT like system or a cam with multiple lobes to change between the different modes.

[@RubenKelevra]

@@brianhunt6943 well, you need a cam with multiple different lobes anyway, as you have to keep them closed. Anyway shifting the cam over to a different pattern with a fork doesn't sound *that* complicated.

[@safetyfirstintexas]

use the 2 deactivated cylinders as a supercharger for the 2 active cylinders.

[@addo9697]

that would be awesome to see, immagine like a 6cyl operating on 4 but with 2 used as compressors

[@lovesosa6467]

Oi P Ql

[@Dragon22078]

Hell yeah

[@reaganharder1480]

I do wonder if that would be achievable under the terms of "youtube budget"

[@danb4275]

You'd have to bore out the charging cylinders to get more air in, or use three deactivated cylinders to change one active...

[@ElectronikHeart]

I'm sure if the 2 cylinder mode is only activated on low power mode and 4 cylinders when actual power is needed, the economy could be quite substantial. Also leaving the valves closed is creating some kind of vacuum pump in the deactivated cylinders. Real engine with cylinders deactivation also had oil burning issues because of that. Edit: some kind of reverse Jake brake system can be able to squeeze some more hp into it I think.

[@fryguy503]

I was going to comment on the similar. Would be a better test to lock the valves open on the deactivated cyl's

[@ryanmalin]

@@fryguy503 I think that would create a lot more heat and overheat the cylinder

[@TykeMison_]

@@fryguy503 Locking valves open would not be the ideal situation. It would screw up the exhaust pulse timing and take away any intake charge air/pressure boost advantages from the remaining cylinders. Also, the dead cylinders will always be eating a lot of filthy exhaust air on top of the EGR and oil already being pushed into the cylinder chamber with no way to burn it off. Any gains from reducing the compression load on the deactivated cylinders would be lost from the rest of the system becoming less efficient.

[@kstricl]

My brother and I tried cylinder deactivation on my 1981 Jeep Wagoneer with an AMC 360. Experiment 1: Rapid deactivation of 2 cylinders while traveling at 55 mph. Cylinder 8 was deactivated by disconnecting the wrist pin end of the connecting rod, which then deactivated cylinder 7 by way of removing the rear section of Cam. Jeep was able to climb the hills to his house, reduction of economy observed, some rod knock and reduced oil pressure observed. Experiment 2: Deactivation of 3 cylinders. Jeep able to move still, but unable to climb 8% grade except in 4-low, first gear - barely. Fuel economy appeared unchanged. Experiment 3: Deactivation disabled by replacement of spark plugs. Jeep again able to maintain 55 mph, Economy returned to normal, bottom of tank observed 3/4 mile from gas station. Hyper miling mode engaged to achieve station.

[@ocdman202]

Love the comments here.... I come for the video and stay for the great comments

[@tonycavez]

INTERNATIONAL produced a 4 cylinder with a v8 block a friend of mine owned a scout with that motor , google it

[@shinymud7]

Thank you for showing everybody it’s OK to use your turn signals :-) you’re one of the few people on KZbin that do this.

[@robotcantina8957]

Now if I was driving a BMW....

[@mommapanda5736]

@@robotcantina8957 Robot, looking forward to another great video on Robot Cantina.

[@ThexXxXxOLOxXxXx]

@@robotcantina8957 Hahaha i mean i'd understand i too wouldn't if i had a BMW it's part of the lifestyle 😂😝

[@andrewwhite986]

Removing the spark plugs from the deactivates cylinders would of been an interesting comparison. A little less compression to fight against🤔

[@muh1h1]

That would have been my first instinct

[@maxxron]

I was thinking that the exhaust valves needed to be propped open for the same reason, but pulling the plugs would be a much simpler (but probably louder and messier) way to provide proof of concept.

[@muh1h1]

@@maxxron One could also connect all (deactivated) cylinders with eachother to keep it as a closed system but have no vaccuum or pressure

[@Turbochargedtwelve]

You don’t want the pumping losses that would cause. It is much better to keep the volume of air constant in the cylinders. It will act as a spring compressing and decompressing during the cycle, ideally there would be no leaks too.

[@andrewwhite986]

I was thinking that it might cause a slight imbalance but it would be a quick and simple experiment.

[@orenyehezqel8178]

Why didn't remove the spark plugs in the deactivated cylinders, you are losing power by comprising the air in the cylinder?

[@sticker89]

And air will work like spring and bounce back. Actually there's no air insid. All air will leak out in a few minutes

[@acceler9]

My first new car was a 1994 Saturn SL (the base model with manual window cranks). It had either 85 or 89 HP (don't remember exactly). That car was SLOW! I used to call the A/C button my Turbo button, as you could feel the power boost when the A/C was off. I used to turn it off to go up mild hills. I drove that car for 160,000 miles, and it was still running well when it was totaled by an 18 wheeler. Thanks for the memories!!!

[@deadchannel991]

I have a 2002 Saturn SC1 with just over 115k miles, ive driven it all over the past year or so with no issue. No AC, slow, but by god is the gas saving awesome. Compared to my other cars it's insane.

[@ThexXxXxOLOxXxXx]

thats crazy thanks for sharing😀

[@tonycavez]

i have a 2001 1.9 with 335k miles and never let me down anywhere one of the most reliable cars i've owned and i have owned lots even Mercedes Porsches and BMW's

[@dylanthescatterbrain]

Why didn't you remove the spark plugs? With both valves closed, you are going to be building compression on the up stroke and vacuum on the down stroke on every single stroke. I bet you could have got better fuel economy numbers on the 2 cylinder if the engine wasn't fighting that 100% of the time.

[@colincrooky]

Thank you for that enlightening video it was interesting. Some commentators thought that the smoke was coming from the piston rings, that maybe so but I think (occasionally) that it was getting through the valve stem oil seals and because the valves were not opening it was trapped there until the cam follower was reinserted. When smoke appears when first started then disappears is usually a sign that the valve stem oil seals are badly worn. The two cylinder drive was smoother probably because the engine was balanced as opposed to the off balance of number two cylinder interrupting the opposing 1 and 4 crankshaft phase.

[@ocdman202]

I am a proud member of the ROBOT CANTINA fan club. Love the content and LOVE the humor of the channel. 👍👍👍

[@gregoryharmon2348]

I really enjoy the mid-video music track you used. I believe you used it some last season as well. Perhaps you could share the title/performer? Thanks for a great & interesting channel.

[@woodydailey4687]

This was also done back in 1974 with turning V8's into V4's when gas prices went crazy. Gas had been about 29 cents a gallon and then jumped up to about $1 a gallon.

[@willitbutter234]

You're my favorite engineer, and favorite guy on KZbin right now. Keep up the great work!

[@Mrelectric423]

My favorite KZbin channel too. I met the creator of the scan gauge about 10 yrs ago and own a scan gauge!

[@kansasrose2909]

@@Mrelectric423 This is on my list of favorite you = tubers.. Keep going Jimbo, we need you now more than ever.

[@MHLivestreams]

Look up garage 54, they take experiments to the extreme.

[@isaks3243]

I had to drive a car for a short while with one cylinder almost deactivated. it is an inline 4 where the sparkplug on cylinder 3 decided to split into two which meant that I couldn't attach the spark plug wire to the actual plug itself. so that cylinder got fuel, and promptly spat it back out the exhaust pipe. only drove 5 km to get to my friends garage and fix it. but it sounded surprisingly fun, almost like a subaru boxer for some reason. and if someone is interested, it is a 1984 Volvo 360GLT with a b20 swap from a Volvo 740

[@sambrose1]

The Lean Burn should be interesting. I was always fascinated by the old WW2 stories of the Navy pilots leaning out the mix to get back to the boat landing with nothing left in the tank.

[@azertyytreza8947]

Never expected de-tuning an engine would be so interesting! I really like it, thanks for sharing!

[@MrMaxeemum]

Cylinder deactivation may save fuel under light loads but here it was mostly under heavy loads as it was harder to accelerate. It may be easier to deselect injectors depending on manifold pressures.

[@ReubenHorner]

In that case there would still be pumping losses where disabling the valves almost completely removes the pumping losses.

[@danr9584]

I'm not sure how the EGR valve works on this particular car, but if it's signaled by vacuum, 2cyl may be enough to be opening the egr valve. That will significantly reduce performance when having to run under heavy load. The engine will start detonating and have to pull timing out to compensate.

[@christianflores3437]

How y'all know this shit

[@manwithouteyes]

A Saturn down a cylinder or two and burning oil... how is this any different from the average GM product of that era on the road?

[@tomrandall4871]

So deactivated cylinders increases engine drag on those cylinders because of compression and vacuum. Now a experiment I did in the 1980's on a 360 Cid v8 was to remove 4 pistons & block off the oil holes by a machined spacer (2 piece) and kept the other connecting rod in its place. As for the lifters a copper fuel line was pressed into the oil hole blocking off the lifter oil. A special tool made from a old solid lifter was pressed into the lifter holes one at a time to peen over the copper line as to allow the new roller lifters to work in in place of hydraulic lifters. Plenty of oil kept the roller lifters lubed from runoff from the rockers in the heads. Removed the 650 Carter 4bb carb and made a adapter for a 1bb Carter from a 225 Cid 6 cylinder. Yes it did run good once I had to externally add weights to the torque converter to balance out the engine. Granted, the new roller cam had a higher low end torque profile and I had the heads milled and valley decked. The compression went from 8:1 to 9.5:1 used headers with a cross over connecter. The van went from 14 mpg avg to 22 avg. Later when the fuel crisis was over I put it all back together keep the roller cam and the replacement carb was a holley 620, (600 cfm bored out) with a electronic duty fuel solenoid on the primary side. Fuel mpg was 17 avg.

[@ocdman202]

I love the comments here... I come for the video and stay for the comments on this channel.

[@guillaumegaudin694]

22:00 That's because at WOT you're on open loop, while on 80% throttle you're on closed loop

[@devdb2]

That outro was legendary. I love these like-minded engineering "what ifs". You earned my sub with the predator engine series, and you continue to impress. Keep up the fantastic content!

[@41links]

I drove a 1256cc Vauxhall Chevette, which had burnt a hole through No. 3 piston, for over two weeks (about 500 miles) on three cylinders (spark plug removed) before it went bang!

[@hopingforthebest1.9]

Im surprised it worked that well! VW experimented with a supercharged 2 cylinder diesel, it was made by cutting a 4 cylinder in half!

[@rascalwind]

Can you do the two cylinder deactivation and open the exhaust ports partially to allow the cylinder to breath without blocking or chuffing them exhaust. Free breathing.

[@pohldriver]

Based on the comments, folks don't know how GM overcame deactivation issues. They found simply killing spark and injection wasn't enough. The values also have to close at mid stroke to eliminate parasitic loss from vacuum and compression. It also reduces or eliminates oil in the cylinders. It makes the pressure a net zero. That's something that the 8 6 4 Cadillacs couldn't accomplish, in addition to massive loss in power when cylinders cut out. Throttle by wire is why you don't really notice the change on the DoD engines of today.

[@ocdman202]

Good comment here... Looking forward to more from Robot Cantina

[@802Garage]

I think this also demonstrates that manufacturers probably know what they are doing when it comes to maximizing fuel economy.

[@reaganharder1480]

well... Ish. They have more than one priority when designing a car. The engineers designing your car almost certainly know better than you how to make it efficient, but there's a good chance there are other things they are prioritizing more than you would, at least if you are the type to get into hypermiling and ecomodding, and thus if efficiency is your only concern, you quite likely can still improve on their design somewhat.

[@hackervirus56]

No they dont

[@802Garage]

@@hackervirus56 Yes, they absolutely do hahaha.

[@bowez9]

Can and has been done electronically on a stock Ford 3.0 Duratec. By memory all that was done was disable the spark and injector on disable cylinders, and compensate fuel curve.

[@velocitiegamerz]

I have a 4 cylinder turbo Hyundai Veloster and one time I had two ignition coils go out at the same time and when they went out I only had 2 cylinders running and the mpg read out measured 50-60 mpg and ran just fine. Usually I'll get about 30-35 mpg on normal use

[@winddowntime2943]

My father purchased a 96' saturn sl new when I was a kid, the car rusted out to the point the doors wouldn't close from the structure bending but was able to put 315k on it, all the while still happy to make 45 mpg (His best tank run ever was 52 mpg).This was probably due to his custom ordered model with no a/c or p/s and one mirrior lol. Maybe we can see a mpg test with limited accessory drive?

[@nasonguy]

So good. I loved my SC2. AC never worked when I had it. But with well over 200,000 miles on it, she still got 40 to 42mpg with a dumb lead footed kid driving it. Best I ever got was 45 on a 200 mile highway trip. Thing just sipped gas.

[@amak1131]

PS can eat some mileage, but if the AC isn't active then the pulley on the belt just spins.

[@willbennett8799]

That’s odd considering Saturns were made with plastic body panels

[@Astrothunderkat]

@@willbennett8799 But they are still unibody, giant void of an open door = no structure. He's saying the door gave the soft body rigidity.

[@elektroarkivet]

I guess the almost unchanged fuel consumption may be caused by the ECU more often goes into full throttle enrichment. I've heared that also carburettors sometimes do the same trick of enriching fuel mixture near full throttle, but I don't think that will happen with a simple carburettor as the one from a lawn mover. -Would be interesting to see a comparison with the two cylinder deactivation together with the lawn mover carburettor! Deactivating cylinders by disconnecting the valves is off course easier, and certainly more reversible, compared to entirely removing pistons. I did the latter to a Fiat 127 after having a big end bearing seized. I knew from having a 2-cylinder Fiat 126 that engine balance is really poor with two pistons running in paralel, and running a 4-cyl on 3 is also really bad. I therefore chosed to remove a the counter acting piston next to the one with the seized bearing. I got really good mechanical balance, but having a 180 degree firing order gave the shakes at low rpm so I guess it all would have turned out better if I had chosed 360 degree firing order instead, and kept the big ends of the conrods instead of welding the oiling holes shut. Anyhow, the Fiat 127 had a carburettor and I got a fuel saving of 10-15%, meassured during a year and over 40.000 kilometers. kzbin.info/www/bejne/fZSuf6dsht14j6c

[@lilsammywasapunkrock]

This. On my older sefi, the throttle input is linear to fuel load % up to 50% or so throttle. At 50% throttle, it goes to 100% duty cycle and switches from sefi to batch fire, firing 4 injectors per side at 100%.

[@maxxron]

I was wondering about that myself.

[@jeep2003]

That plus the ecu probably sees its running lean with two unplugged and puts way more fuel to the system.

[@_coffeeandcigars]

In my experience the ABS will start to creep at cylinder-head-temperatures if it has some load on it...ask me how i know ;) I moved to Polyamide with glass or carbon fibres now. I print on the Mini =)

[@nerd1000ify]

It's also very much not fuel resistant. ABS parts inside the engine will likely degrade or dissolve over time.

[@brianhunt6943]

Yep this probably comes down to glass temperature vs melting and liquid temperatures. Plastics have a lot of varying properties depending on what temperature they are at.

[@matthewhardy8133]

I wish the 200 mpg carburetor believers would watch videos like this. These experiments prove that any given automobile requires a certain amount of fuel to move it, and there isn't much room for improvement.

[@gjkrisa]

Evap is usually the gas cap not on all the way out it on till it clicks even though you feel it squishing the gasket or pulling the thread it’s still not tight enough till it clicks

[@gabrielv.4358]

Weird how the engine sounds like it's at half rpm's with two cylinders. Amazing that you show the ECU codes too! I have a lot of cars in my city running on 3 cylinders lol. This might sound awesome (LOL) with no exhaust

[@oddojaggins]

What I learned today is that if you live in an area with backroads and lower speed limits then this could be temporary solution for someone with an engine with problems to get by. Great job as always Jimbo, Robot Cantina and Aging Wheels are my 2 favorite car KZbinrs lately and I'd love if you guys could collaborate sometime

[@reaganharder1480]

As in the one project car I bought with a hole through the block could have maybe been made to run on 2 cylinders if I deactivated the ones with the hole...

[@MHLivestreams]

Could help fuel economy in a dystopia too.

[@louisbryant2302]

One thing worth noting is that the engine may have detected a problem and gone into limp home mode. This would of decreased the power avaliable and not allowed you to have gone full throttle.

[@OverlandTT]

Great video, may I suggest taking out the spark plugs from the two deactivated cylinders. Run a pipe to the air box for clean supply. This will enable the cylinder compression to be zero in the dead cylinders. Best wishes from the UK

[@michaelcrumlett187]

I love this channel. There’s nothing better than a cup of coffee and Robot Cantina on Sunday morning. The engine was burning oil after number two was reactivated because the piston was still moving in the bore and creating a low pressure area. Oil was sucked past the 216,000 mile rings, then blown back out past them. Residual oil coated the inside of the combustion chamber, hence oil burning.

[@jamekins]

Try using the deactivated cylinders to pump air in to the other cylinders! I read about someone who did that with a Ducati twin- one cylinder was a supercharger for the other cylinder. He claimed to make more power running that way than the original naturally-aspirated twin.

[@benkiist8218]

This is an idea For sure

[@ogonbio8145]

That’s crazy dude

[@Qui-9]

That wouldn't work to advantage unless you used more than a 1:1 ratio of deactivated to activated cylinders.

[@Cjbarker2]

I believe I remember hearing something about this kind of thing. As I recall, the deactivated cylinders were converted to 2-stroke and therefore moved twice the volume of fresh air as the two fully-operational cylinders. It makes sense that two cylinders running up to 2atm of boost would be both more efficient and more powerful than the original four-cylinder engine, even if by a small margin.

[@Globbs]

This opened my eyes.

[@codyking4848]

I did an 8 cylinder deactivation once on a Camaro SS. It was neat, watching the shower of flaming parts. Very good on gas mileage, and man, talk about QUIET!

[@supadwarfa]

6:50 Maybe I missed something but is the 2 middle cylinders just filling up with fuel/oil until they hydro lock? The fuel is pooling behind the valve and the chamber is pulling a vacuum each stroke. It's all just coming through the valves and the rings to fill the chamber. Even on the normal car its just going to fill with oil until a rod bends and sees daylight.

[@shawnherron7748]

Have you tried swapping injectors with hose-style-cng injectors and supplying LPG with hose and screw tight hose clamps while running less cylinders; to see if the injector timing can be easily swapped without new computers, evaporators, mixer carburetors,etc. ?

[@cafn8ed74]

"With 3 cylinders it has more power, but it sounds terrible" Me: oh, I thought it sounded like a Subaru with UEL headers 😄

[@robotcantina8957]

LOL... great comment! Yes! it sounded like a Subaru......Some people like that sound, I find it disturbing because they sound like they are misfiring.

[@mommapanda5736]

@@robotcantina8957 Robot, Looking forward to another great video from Robot Cantina.

[@phil955i]

Love what you've done here 👍 My question is what's happening in the deactivated cylinders- as both valves are closed won't the piston be trying to pull a vacuum on the downward stroke & compressing (what little air there is in the cylinder) on the upward stroke, causing losses?

[@malrofo]

That's so interesting. The fuel injector connector broke and I was driving on 3 cylinders in my 2002 sentra with the 2.5 engine. Still had plenty of power

[@Qui-9]

I have to wonder what kind of air/fuel mixture and possibly ignition timing issues you might be having with this setup, since the ECU is set up to expect 4 cylinders but is taking the intake airflow or pressure, throttle position, oxygen sensing from single sensors, activating idle air control and EGR at single points, etc. Your car is likely at best in some form of limp mode and probably worse, dealing with physical conditions actually way out of range of the ECU map in several areas, and limp being unable to compensate for those, unlike simply missing sensors or actuators. If an ECU could be set up to handle individual cylinders, individual intake,/exhaust/sensors per cylinder, then maybe fuel economy could be improved by a small margin, particularly in the low-load/low-RPM and idle conditions.

[@maulerrw]

I did this to a Toyota Paseo (Tercel). C1 burnt an exhaust valve in half, so I disconnected the injector and we just ran it on 3 cylinders for a solid 6-12 months. It idled like poo, but above 1500rpm it ran perfectly fine... Except it had rubbish power. The 7AFE goes pretty good though in a light car, so as long as you didn't have passengers it still ran alright. Fuel economy was the same or worse, because you've just got your foot on the floor half the time lol

[@paulwayneparker6690]

What if you took 1 or 2 injectors on it placed them somewhere else on the intake... like a TBI system.. plugged in dummy injectors for the other 2 or 3 you don’t use.. if need be?

[@JoseSilveira-newhandleforYT]

This channel never disappoints - that was fun! You certainly made it sound like a motorcycle :-) Can't wait to see what comes next :-)

[@jiyushugi1085]

I worked as a bike mechanic in LA back in the seventies. During the fuel crises one of customers (may have been Mr. Edelbrock himself) removed two of the rods/pistons from a V8, turning it into a V6 to reduce fuel consumption.

[@ocdman202]

Did Mr. Edelbrock find the answer?

[@no-damn-alias]

What really helps with fuel economy, I tested it myself is to try and make a hybrid out of your car. Accelerate with the rpm and the load in a range were it's most efficient. Then put it in neutral and turn of the engine. Works best on manual. The coast as long as traffic allows and use your knowledge about the route you're driving. So converting units I roughly improved fuel economy on a otherwise identical car from ~35mpg to 50mpg and even slightly better after I got used to it. Then I switched to electric and can charge for mostly for free at work.

[@nlo114]

Next job: Study the 'Ilmor' 5-stroke engine. It channels the exhaust from Numbers 1&4 to a larger middle cylinder to get a second stage of expansion, raising engine efficiency. In a 4-cyl engine, 2&3 go up and down together, so would serve the same function as the 'Ilmor' middle cylinder. A few hour's work with the welder and a bit of scrap tubing on camshafts and piping should do the job...

[@nickmudd]

For anyone interested in more cylinder modification stuff, there is a very interesting build video on "The horsepower monster" channel where they modify a NASCAR SB2 V8 to run as a V6 for a specific salt flats category rule

[@thedarkknight1971]

There's also 'SuperFastMatt' who's building his own Salt Flat high speed run car, utilising a BMW 1000RR 4 cyl motor, and he's going to run it in 2cyl mode as well as full 4cyl mode for different 500cc & 1000cc catagories.... I like his kind of sense of humour, it's kind of like this guys humour too. 😏. He's also fitted a full Tesla power train into a classic 40's(?) Jaguar👍 and fitted a CBR1000 motorbike engine into a classic Honda S600 car chassis 😎🇬🇧

[@c0c0asauce]

I figured I'd find a place for this. kzbin.info/www/bejne/eKS9ZnmKqch7r8k

[@MapleMan1984]

@@thedarkknight1971 So he ruined the Jaguar?

[@thedarkknight1971]

@@MapleMan1984 Have you watched 'Suoerfastmatt's videos on it? Either way, as they say "Each to their own", in one regard he is 'Updating' a classic jaguar to run more 'Green' hence keeping the chassis and body going instead of scrapping it. In one sense yes he could have done a full resto-mod. In one sense he could have just done a full restoration. In another sense he could have just scrapped it. Multiple decisions, multiple reasons. Each person would have done their own thing, take you for example, you have your own ideas. It's like someone did a beautiful job 'Resto-modding' a VW Karma Ghia so it is immaculate in paint, running gear, parts etc, but, fully electric driven. One of the complaints of fully electric drivetrain cars are that there's just 'A lack of driver engagement' per say, so, some companies have 'Resto-Modded' old Porsches, Jags, and other cars so that they have an electric motor system that's linked to the original 4 or 5 speed manual gearbox, hence you get power and torque, but, 'Involvement' with a manual box... Again.. "Each to their own"... 🤔😏. 😎🇬🇧

[@MrEricErwin]

Hey a bit late just got my first 3D printer yesterday and got that all together and running. Keep these videos up!! Loving the content. Ender 3 Pro. Benchy came out nice.

[@robotcantina8957]

Have fun with the printer! They are the best toys for adults.

[@mommapanda5736]

@@robotcantina8957 Robot, Looking forward to another great video from Robot Cantina.

[@IgniteLight]

Love the content and very entertaining way in which you present. Thanks for sharing!

[@kinglooper]

This is well above and beyond what I ever expected to find in a KZbin video. Actual engineering and a genuine scientific effort. Great work!

[@littleengine1303]

No reason for anyone to get mad about copying an experiment. It's merely different data for a concept. Luke did this with an old school V8, you are doing it with a fuel injected car. I really enjoy the fact that more than one person has tried it, and what you've been up to with the Honda has really interested me as well! Keep up the great content.

[@christopherlenahan3906]

I think relatively smooth is a better phrase... As in relative to a V-twin motorcycle.The engines intake and exhaust are likely tuned to run on 4 pulses, so Honestly I think ITB's/2-carbs and a 2-cyl header would result in some real performance gains.

[@raymonroe1983]

That's a nifty experiment. Thanks for the video Jimbo.

[@davidnovansky7295]

It would be fun use 2 cylinder engine with 2 pistons working as compressors to make forced aspiration , i know it sounds crazy

[@xani666]

Inline supercharger lmao

[@12gauge_shawtyy]

that idea is insane

[@Vo0d0o2009]

ihave been harassed by the idea long time like taking a 4cyl engine and turn 2 of cylinder into an air compressor lol ( motocompressor) , crazy imagination

[@conicEllipse]

:O My face when the car started after "deactivating ALL cylinders". ROFL!!

[@jackrieger2272]

This is one of the most interesting videos I’ve seen on KZbin in a LONG time

[@lakewebsterkid]

Can you try altering the engine to run Atkinson cycle? Might take quite a bit of work, but would be cool none the less.

[@iFixJunk]

"Are you telling me you built a cylinder-deactivation system...into a SATURN?!" "The way I see it, if you're going to experiment on a car, why not do it with some style?!"

[@Oddman1980]

This is ironic, I fixed an old Saturn up a couple of years back, one of the first things I had to do was fix it so it would run on four cylinders. 0-60 in 34 seconds means you're a LOT faster than just about every car I see on the way to work...

[@h8GW]

"Hey buddy, your car sounds kinda rough!" "I know, I deleted most of the cylinders."

[@thedarkknight1971]

There's also 'SuperFastMatt' who's building his own Salt Flat high speed run car, utilising a BMW 1000RR 4 cyl motor, and he's going to run it in 2cyl mode as well as full 4cyl mode for different 500cc & 1000cc catagories.... I like his kind of sense of humour, it's kind of like this guys humour too. 😏. He's also fitted a full Tesla power train into a classic 40's(?) Jaguar👍 and fitted a CBR1000 motorbike engine into a classic Honda S600 car chassis 😎🇬🇧

[@Ian-iu2tl]

Thunderhead 289 would be so proud. I can see him now sittin' back in his custom, duct tape upholstered Lazyboy, sippin' on a Folgers topped with Cap'N Crunch whispering quietly to himself. "Yeah boy"

[@Spheredalai]

14:09 JEEZ! what have you done! you just created an F1 for a few seconds there 🤣

[@harujp2]

love the thumper lawn mower mod at the end xD freaking hilarious sounding

[@barnhartpinball]

Keep the videos coming. I have a 96 SL1 that I've built and modded here and there. My next experiment will be coils on plugs and see what improvements that will bring. May move the ecu off the engine too.

[@lawrence1md]

What a fun watch! I wonder if the ecm was seeing lean exhaust for the deleted cylinders and trying to compensate the fuel trim? (Dumping more fuel) Resulting in a lower mpg…

[@SpeedHero]

My brain tells me that it is not displacement that makes fuel economy, but resistance to movement. Curb weight being the primary factor of resistance, especially in stop go traffic. I'd like a video about reducing resistance to movement, through reduction of all types of friction.

[@rando5673]

I wonder how much of a difference brand new or freshly greased wheel bearings make

[@gregkotoch2765]

I wonder if it's running super lean in 1 cylinder mode because the fuel injector can't add enough trim. That's why 80% throttle had more power, it enriched the mixture.

[@johnlease2369]

Very cool guys, a little forced induction would be a great test with cylinder cutoffs using toggle switches on injector wiring. A lot less tear down. And easily configure what cylinder arrangement works best. Just a thought.

[@pomdigz9893]

I think it would work best to turn off 2 cyliders after reaching 50 mph

[@shackwrrr]

Issue with just deactivating the injectors is that with the valves still working you have pumping losses.

[@maxxron]

@@shackwrrr But the pumping losses in a cylinder with open valves instead of a closed cylinder should have significantly less parasitic losses. Turning off the fuel flow to the injectors on a couple of cylinders SHOULD net a significant increase in fuel economy. I'm guessing 25% or so.

[@kylemilford8758]

@@maxxron big issue is less power available means more throttle is required to maintain a certain speed. This is why some big engines such as LS1 can be tuned to make 35mpg on the freeway because you're basically idling

[@maxxron]

@@kylemilford8758 The final drive gearing is also going to have a huge effect on fuel mileage.

[@seekerofthetruths]

Would it not have been effectively the same to just unplug the injectors? You're still getting friction and pumping losses with the rockers removed.

[@MJorgy5]

Instead of 'deactivating' cylinders, could manufacturers do 8 or 12 stroke for low-load / cruising? It seems like this might be less problematic for thermal reasons and easier to accomplish.

[@mommapanda5736]

You have brains in your head You have feet in your shoes. You can steer yourself any direction you choose.

[@ocdman202]

Great comment here...Looking forward to more from Robot Cantina

[@motorosso3349]

Interesting, but the deactivated cylinders needed to compression free. Back in the 1970s, I had a 2-cylinder VW Bug that had 2 pistons removed. It probably had 15 HP and was fun to drive on country roads. Top speed was about 50 mph (downhill!).

[@isaactrockman4417]

“Half VW” engines are common in aviation

[@zalllon]

I just stumbled across these type of videos, and watched yours and one other channels video on adding a lawnmower carburetor. Really interesting, and quite honestly, so glad that there are people that are still curious to experiment. Although the results are disappointing, it’s your willingness to spend the time and effort on doing an experiment like this that is encouraging. From an old timer, I definitely appreciate this type of approach and personality that’s willing to do it. Thank you so much and please keep going.

[@Bigshooterist]

Another fascinating video. I see this one becoming another long series. Thank you.

[@luckyedwards4870]

So people question y u try running different numbers of cylinders... that should b obvious, it's fun, and it's interesting. Anyone who has worked on cars, and has any imagination, should surely appreciate this vid. I think it was cool. Great job, and an entertaining thumbs up.

[@davidjernigan8161]

Shows how much some people pay attention or just rant without watching the video.

[@zeke112964]

Your transmission is not stuck in 3rd or 4th gear it needs a shift solenoid ....you can find used ones on the internet for cheap

[@mommapanda5736]

“Winter is the time for comfort, for good food and warmth, for the touch of a friendly hand and for a talk beside the fire: it is the time for home.”

[@mommapanda5736]

Time is not just the hands of a clock. It isn’t just a change of seasons either. It is a treasure trove of precious moments, infinite little joys and blessings, precious smiles, tears and heartbeats.

[@ibsr6524]

Thank for the video guys, massive work.

[@RAD-RC]

Damn using thr slope between those last 2 0-60 metrics you can put a 6 cylinder engine in and get a -3 second 0-60. Can't wait to see that next episode!

[@danb4275]

I'm pretty sure that type of math only works on Deloreans around 88mph

[@bcooley2]

What is the firing order? If you said, I missed it. I was expecting you to deactivate 2 and 4 or 1 and 3.

[@mikegross3800]

1-3-4-2

[@stromxtc2033]

Top notch video graphics. Why did he do this...? Because

[@fisqual]

Some folks are saying remove spark plugs on deactivated cylinders which would be neat to try but I say instead of that, make some sort of chamber that hooks up to the spark plug hole to wildly decrease the compression ratio in the deactivated cylinders without actually leaving a spark plug out. Like a small air reservoir that screws into the spark plug tube.

[@howiefeltersnatch2973]

Or a tube that connects the two dead cylinders via the spark plug holes? Or just a small air filter for each hole?

[@OverlandTT]

People need to remember economy is about engine load not just rpm or how many cylinders. As I said before - pop out the spark plugs from the deactivated cylinders and retest. You’ll be surprised at the results this time I’m sure.

[@dsgdskinn]

I have a question what if you move 1 or 2 injectors to between the intake and the throttle body. Would the thing run using the fuel injector system. Something like moving injectors 1 and 3 to the front of the intake

[@aae42]

i thought at the very end you were going to drive around on the starter and claim you had an electric car 😉

[@neighborsjordan95]

I always had an idea of setting the injectors of an efi car on a switch like a turn signal relay system so it runs 2 cylinders for a second or so and then the other 2 cylinders alternating, causing an even wear/heat cycle while only running on 2 at a time, with a bypass "GO" button to run all 4 normally without the deactivation when you need the power

[@oskarpolanski3152]

8 stroke engine! with 4 of the strokes being the cylinder just doing nothing

[@johnathankrausrig9237]

I assume the parasitic losses due to friction of the disabled cylinders ate away any potential Benefits in terms of fuel efficiency. That was something is asked my self a long time. Thanks for providing the answer. Maybe thats why cylinder deactivation is only used on v engines.

[@maggiejetson7904]

Why didn't you deactivate the outer 2 instead of inner 2 cylinder? wouldn't that gives you better balance?

[@mommapanda5736]

Electricity is really just organized lightening. 💥💥💥

[@ocdman202]

I look forward to what ever experiment Jimbo does next..

[@tbozzz8785]

I mightve missed it, but did the ecu end up getting retuned to run with the way the motor is now, considering it still thinks it controlling 5 different aspects of 4 individual cylinders instead of the half it really is

[@robotcantina8957]

No, the ecu was not re-tuned. Keep in mind, this is a very early version of the OBDII system... we are able to introduce faults and the ECU just deals with it.