How Far Can You Push a GR Yaris or GR Corolla Stock Engine? Motive Garage

[@HFV_Junkyardin]

So what I’m hearing is that Toyota should double this and make another legendary in-line 6.

[@Mr.Marbles]

yes! its so cool to see how much the downsize engines make, when you would put 2 together. the 3 pot fiesta st engine would be a 3.0 inline six with 400 hp and around 600 nm of torque for example. dont know if you can just weld 2 together, but i think it wouldnt be that hard. get on it toyota! give the people the supra they want.

[@yan7911]

@@Mr.Marbles the bmw inline 6 in the mk5 supra is already incredible

[@Mr.Marbles]

@@yan7911 it is, but its a bmw engine. The whole point of the original supras was the engine, which was made by toyota. I dont think people would care, that it shares parts and the platform with bmw. But the engine should be toyota and that is what many people dislike.

[@mikethompson7046]

@@Mr.Marbles hate to burst ur bubble but the engine 2jz was made by Yamaha

[@johnnyng8527]

3JZ

[@VonGeggry]

450HP out of a three cylinder. That's pretty damn insane.

[@skvltdmedia]

And if it pops it doesn't cost 5k like shitty subie boxers of today.

[@KLOKSLAG1911]

HKS YARIS GR have 450bhp and still drives arround

[@NayaA-Ri]

What about Nissan ZEOD engine ?

[@skyreach669]

@@skvltdmedia You're fucking delusional if you don't think a brand new engine like this won't cost 10k

[@TheJapfanboy]

@@skvltdmedia damn this guy wants all the smoke🤣

[@n.kempland2825]

This proves that Toyota can build an absolutely mental engine. Time to put the Supra back on the drawing board and put a Toyota motor in it. This thing is nuts. Cams and a larger turbo and this is a 500+ stock motor all day.

[@RanNguyenParked]

With a constantly blown head gasket 😭

[@Mark3nd]

Erm, "Supra on the drawing board and put a toyota motor (engine) in it."? Dude, that's .... basically just remaking the new engine for the Supra. The body is fine, the interior is fine.

[@nightriderjazz]

@@Mark3nd change the BMW infotainment and AC controls to Toyota. A slight touch up to the tail lights would also help. Boom, a great supra

[@Mark3nd]

@@nightriderjazz The idea is from BMW, the make is Mercedes, the body is Toyota, the lights are bmw, the suspension is ford, the tires are ferrari, the exhaust is Lamborghini Basically, its a car thats not really Toyota. Its basically every manufacturer car (unfortunately its true to MANY cars ever).

[@oscarchakanetsa8425]

I felt betrayed by toyota when they used a bmw engine in the legendary Supra

[@jrbuch]

That's a beast of a little engine. I always thought open deck blocks weren't so strong - but those cylinder walls look chunky.

[@enriqueamontero4695]

Yeah, man. She's thick!!

[@Wind_slash0]

Thicc

[@brandons9138]

Open deck designs are a weakness when making high power. The thickness of the wall is only 1/2 the equation. If the stiffness of the structure holding the wall in place is lacking the bore will move under high power/rpms. I'd be willing to bet that is what happened to this engine. An inline 3 is a pretty short crank and block, but no matter what, materials have their limits. Open deck aluminum block engines are just grenades waiting to happen in high power configurations.

[@devon5078]

@@brandons9138 im sure it wont be a problem until ur pushing like 500+whp

[@crisnmaryfam7344]

@@brandons9138 you really think they didnt measure and look for that when they tore it down after it popped? ... Derp. What happened is they blew a head gasket. Obviously. Depending on the engine its pretty damn easy to do especially at high boost levels.

[@brownsworthy7323]

Again an amazing assessment of the GR and an honest presentation of strengths and weaknesses. Really a testament to the work and effort you guys have gone to to squeeze the most out of this platform and provide an analytical and solution based presentation. As a GR Yaris owner I thank you for your efforts.

[@carlosoruna7174]

Gazooo racing. Lol

[@glanzaturbo]

Good morning Andrew, Rory from Jamaica. I've had this issue before and seen it on a number of "stockish" starlets. Usually we just get a cometic head gasket and some ARP head studs. The factory GR Yaros head gasket looks just like a cometic so I believe and hope it is sufficient. So this leads is to the head studs... I know you know already but let me just say it so it's said.. lol. The studs will equalize the pressure distribution between the head and block with alot more clamping force that should alleviate the problem. The Starlet 4e/5e... ARP make head bolts but not a head stud kit. All you have to do is build your own kit. Measure the bolts and you can actually order the studs off ARP Website , make sure when ordering the washers they not only can go over the bolts but narrow enough to sit in the washer depression made in the head... Talking from experience. Then check the clearance for the tool to actually fit down in the head to tighten them. I don't know the clearance on the GR head but you may have to do some light machining with a porting tool to get it to fit... Very minor, and it's just to get clearance. Hope this helps. I'm going to check ARP and send a link for their custom sizes and send in a reply to this comment. Also you don't have to worry about the threading on the studs being too long as you can easily cut down the studs if the are too long at the top, as long as when it's tightened you have at least 2mm you won't comprise the strength. Cheers mate

[@ARIPerformance]

Awesome video! We are actually finding the exact same limitation with the Abarth & Alfa 1.4 TJet engine. They also run a MLS gasket (0.7mm) that is not perfectly round and with 35+ manifold pressure we are also pushing boost between the gasket layers into the cooling system blowing the main welch plug out of the block. ARP headstuds have helped us eliminate this issue with stock components while keeping the OEM MLS gasket, we are just using thicker OEM MLS gasket (1.67mm) to help with dropping compression and increasing clamping force to handle the boost. Our 1.4 engines also have a "brace" styled crank girdle so good to see it has a very similiar styled design! Keen to see your progress Andrew :)

[@wobblysauce]

And the headstuds same Tq spec? or a few extra clicks...

[@mmllmmll22]

1.4T-jet is a monster, it just needs a few upgrades to handle BIG power.

[@ARIPerformance]

@@wobblysauce we torque to ARP's specification

[@ARIPerformance]

@@mmllmmll22Unbelievable how much power we can make out of a 1368cc engine, completely unopened they have a lot of potential in the right hands.

[@georgetd04]

1.4 TJET/multiair is a beast in right hands even in totally stock form. SLP in greece is making 350+ hp stock! Also is a closed deck design helping with boost!

[@gcntech9071]

Back in 1990 I bought a Daihatsu Charade Gtti (my first car) with 3 cyliders 12v turbo with a factory 101 hp and with just 3 mods and 0.9-1bar could reach 160+hp easily. I had it like this for 6 years and the only problem I had was the weak transmission disk until I got a special star like racing style straight from Japan. 32 years ago!

[@ThePilotGear]

I love these things. The small car, the small engine, the impressive durability and engineering behind them. I hope it doesn't ALL go away.

[@skunch]

All things come to an end. We are witnessing the final decades of petrol vehicles, and the craziest stuff hasn't even been seen yet.

[@ThePilotGear]

@@skunch I'm sure there's a way to keep the cool stuff around, new niche stuff to be developped, but get your soccer mom Nissan Rogues mandated as PHEVs.

[@enesfazlic6017]

Man can you imagine a 3.2 V6 version of this engine design. It would be a beast. 2jz remastered and modernised. Easily 700 --1000 ho capable on stock internals.

[@ardijanuar2036]

LC 300 series and lexus ls500 v6 turbo is already exist. Yeah they're not really performance oriented engine but its there.

[@deandrej674]

@@ardijanuar2036 the most power we have seen from that engine is in the gr land cruiser and engine alone makes 409hp

[@bas0puh]

V6 is not the strongest platform

[@enesfazlic6017]

@@bas0puh thats true should have said Inline 6 😁

[@avancalledrupert5130]

@@bas0puh that's true but a v6 is the best engine for waight distribution . That's why I like a v6 .

[@bentles]

I wouldn’t be “tightening the bolts a little more” unless you get some testing done on them in regards to clamping force vs stretch etc You may end up with less clamping force by turning them further

[@matthewoneil8136]

Yep, they are torque to yield bolts, nothing to be gained from doing them any tighter. After the material has yielded, further elongation will not result in higher clamping load.

[@TRiGGAH786]

1 extra ugga ugga

[@akent46]

@Random doesn't the Yaris use torque to yield bolts?

[@Eduardo_Espinoza]

Good call

[@christopherbassit2757]

90 degree turn after torque spec bud

[@wilarsuki]

Running 10's with a 3cyl. Is really awesome!

[@auwz66]

As with most things at this level you found the failure point. The rest of the engine is so strong that the gasket failed before anything else - which is actually what you want. Looking at the internals I suspect that they always planned for that engine to be 300bhp in road trim and be reliable. (i.e GRC)

[@kovacspis]

I absolutely love this series guys! Makes me so happy each episode.

[@grominwithrob1339]

Imagine the day to day reliability of a stock or lightly modified GR.

[@Dante_S550_Turbo]

that's why i'm so hyped for these damn things. a rally grocery getter that will in most places have a lifetime warranty XD

[@tafabeatz]

If you think it will have reliability you must be out of your damn mind

[@Martin-xh1hd]

@@tafabeatz why?

[@tafabeatz]

@@Martin-xh1hd it’s a toyota 3 cylinder turbo engine producing 300hp that’s why

[@Dante_S550_Turbo]

@@tafabeatz it's fully forged with di & pi keeping the valves cool and clean. the bottom 3rd of the block is the crank main caps like a brace in a racing engine. this thing is built to fuck shit up.

[@paulholla]

All that power from a 3 cylinder is just nuts 🤪

[@taylorwheeler9940]

I'm sure ARP will come out with a head stud for these soon.

[@giovannimora9134]

Apr always on top of parts

[@mikeyg4297]

i d rather blow the headgasket than break the block, they should of done this as a inline 6 for the mk5 supra

[@sigmaprojects]

yeas... 3.2L Beast would be awesome. I honestly doubt we'll see another ICE Supra in the future.

[@supers0nic77]

We all wish they of did this. They should have ran with that ft1 design as well

[@sigmaprojects]

@@supers0nic77 I just wanted a toyota ground up RWD coupe. Just sucks that I don't think we'll ever get one that breaths fire.

[@supers0nic77]

@@sigmaprojects that's my style as well. I'm all about mr2s and 240sx

[@davothegreat9990]

B58 can reach about 800whp on a stock engine....

[@nicolaspetrone3739]

Going to put the deposit on the corolla GR circuit today in USA. Cant wait to mod this thing

[@marc509mtz4]

As a soon to be gr corolla owner, I applaud you.

[@nemnut]

Amazing videos, nice to see limits being pushed to see the potential for this little beast

[@lynel1985]

the g13b swift gti engine in the 90s was also a floating cylinder design. cylinder walk at hi rpm and especially when boosted was a real concern. amazed this doesnt suffer the same fault.

[@domsimonf]

how that the gr corolla is finally announced for the NA markets, this info is priceless thanks

[@jamesamalfi9303]

Andrew, while you've got the head off you should have a block guard machined to close up that open deck and keep your sleeves from flexing, that's probably why you pushed water, core flex, us honda guys know all too well ;( you're not going to get better than a MLS gasket

[@MrJermbob]

Block guards rattle loose, tops of bores wiggle around. Cant fix without decent sleeves like Honda guys know :D

[@BodenM]

There's no real signs of bore walk on that gasket, also given just how meaty the cylinder walls are on the G16E (roughly twice as thick as a K series from a quick eyeballing) and how well reinforced the construction of the engine block is I doubt bore walk would ever be an issue on this engine before reaching truly silly power figures.

[@WASDxMerceless]

It's a floating deck motor on boost. Those cylinder walls are flexing and moving about under full cylinder pressure and will open up the head gasket over time. Same thing happened to the focus rs motors. Gotta close them decks up. Get some spacers machined and pressed into the coolant jacket, even look into grouting the block to help the bottom of the walls from flexing.

[@topcatracing]

Love the details provided on this mighty little engine. Small turbo engine + light car = lots of fun! Makes the old "2L is only for milk" joke very passe!

[@feelgoodhorizon4084]

i really really wish we got the gr yaris :< that little thing is so mental. love the gr series here.

[@lynnmckenney1987]

I REALLY wish we got these in the US.

[@MatthewKrebs_BlackBrave8]

We might in the GR Corolla

[@nerd4049]

The gr corolla is gonna be revealed today, so we'll see if it comes with the same engine and powertrain

[@lovejoyb20]

@@nerd4049 Same engine, higher stock HP. Awesome to see something so battle tested.

[@NayaA-Ri]

COROLLA GR fit US Market because GR Yaris is to small 😅😅✌✌

[@juxebeats5439]

I’m very happy today

[@A4ANT]

Seem to see this issue on early FK2 Type R K20C1 Open block design ( more economical engine due to cooling) means more pressure on head. Few people have had head gasket failure possibly due to them being remapped etc. Believe an uprated head gasket is a new upgrade for owners

[@Korean_Crayon]

I wanna finance the GR Corolla. If it is reasonably priced, I think I might. I'd have to get good at stick again tho

[@ericktorres5451]

Getting good at manual isn’t a problem, the price will be. All the god dam dealerships are marking up cars like crazy

[@giovannimora9134]

Ima guess around 46k USD who knows after the markups

[@inactivegamer6965]

@@giovannimora9134 Florida Toyota seems to not have a mark up, I’m getting the performance trim core

[@Korean_Crayon]

@@ericktorres5451 Yea, I feel liek the price will stop me. If that's the case, I'll just get a used Corolla hatch.

[@ericktorres5451]

@@inactivegamer6965 the dealership I work at marks uo like 10 grand lmao

[@StatiXonfirE]

My GT-R Hub first edition showed up this afternoon!!! Amazing work Andrew and colleagues! Thank you

[@alistairmacgregor1456]

APR studs, metal head gasket, flat faced valves, port polish the head, 3 angle valve job, upgrade valve stem seals, big cams, leave the rest and put 660cc injectors and a meaty garret turbo, replace ECU with AEM ecu to be honest I would get a rotrex supercharger build and remove the turbo

[@t16incho]

The best GR Yaris video series on KZbin, keep pushing!

[@lennyinne]

Try using Evans waterless coolant. From what I understand it does not pressurize like traditional coolant/water.

[@aSinisterKiid]

That head gasket held up amazingly well given the circumstances. There are guys with fully built 1500+ hp engines that are blowing head gaskets at 35 psi in some cases. So that stock setup on the Yaris has delivered in spades.

[@Christdeliverme]

PSI isn't the problem it's the cylinder pressure.

[@aSinisterKiid]

@@Christdeliverme I didn't say that the psi was the problem. I was using that benchmark as an example of race engines specifically built for handling boost that run into part failure (head gasket) around this same level. If it wasn't the head gasket then it would have been a piston. If it wasn't a piston then it would have been a valve. The point is that it would have been something when you are pushing a stock setup beyond it's intended operating range. And exactly as I said, it is impressive that the head gasket held in as long as it did with those boost levels. But what you said is an illogical statement to make. The amount of boost you shove into the engine is directly proportional to increasing cylinder pressure. Just like increasing the fuel or timing is directly related to your cylinder pressure. It's all tied together with the cylinder, the pressure in the cylinder and that head gasket meant to hold that pressure in. If they weren't shoving a lot of boost into the engine they wouldn't have to worry about blowing a head gasket. But when you start getting up past 30 PSI of boost all mechanics will start lifting heads, blowing gaskets and finding part failures eventually with stock parts.

[@Christdeliverme]

@@aSinisterKiid but associating boost pressure as a variable essentially makes PSI a vector for failure in your argument. That's why I make mention, since your comment doesn't appear to make any sense if you remove PSI from the original comment. Then you went back to then defend boost being proportional to cylinder pressure, but ... The very beginning you state that's not what you were saying. Broski. I believe it is you that is on your back heel trying to justify comments, not I. No biggy.

[@aSinisterKiid]

@@Christdeliverme Again it is your comment that doesn't make sense. If you remove boost (PSI) from the equation then they wouldn't have had to worry about blowing a head gasket. Which makes boost entirely relevant to blowing the head gasket. Boost is absolutely a reason for failure, just like too much timing, and an incorrect fuel table. Go ahead and shove 80 PSI of boost into your stock block and tell me how that works out for you boss.

[@workingmanaudio2754]

They’re bolts. Studs may help to reduce the head gasket failure.

[@MotiveVideo]

We know. Force of habbit to say studs from RB life

[@ClaytonYatescarenthusiast]

There is no weakness to this gr yaris! Literally think about this!! The power per cubic inch is equivalent to my gen 5 lt1 making 1785 hp to the tire haha. It's built and makes 545 to the tire. Yeah I think it's strong. 97 cubic inches sound correct?

[@ashcosmo3854]

Engines don't really work like that though. Laws of physics make bigger engines harder and harder to produce more power due to their weight and size. The hard reality is you're being sold less and less engine for MORE money

[@Levibetz]

I watched an HP Academy video on rallycross prepping a 4g63, and they said they managed to make the 4g63 live with some head/block deflection by using two headgaskets. What about tossing a second one on top with some sealant. This would double the distance it can flex when the head deflects, and then a sealant like maybe aviation form a gasket might help the seal.

[@StabyMcStabsFace]

That was two headgaskets with a deck plate between. The deckplate was the fix, not the gaskets.

[@kcspeed9980]

Great series to watch. I can’t wait for this engine to come to the states in the gr Corolla.

[@sr20dago]

I'm glad someone acknowledged the SR20VE

[@trevorsgaragemusings]

What about CNC machine a solid copper plate gasket? Combine that with a bit more torque on the head studs should do the trick.

[@EricFixalot]

Most head gaskets fail due to a loss in clamping pressure. I think those head bolts being loose was the key. If it were my engine, I’d look into either studding it instead of head bolts or I’d look into enlarging the head bolts. However I do believe Subaru had an issue with the coating on their head gaskets which was then solved by Mahle.

[@mdev8846]

Fel-pro head gaskets is a great option too !

[@davedree]

Exactly Eric, but I don't think head bolts were loose, it's just the cylinder pressures are so high that the head is lifting off the block. Now studding can help keep this effect in control, I do it on my YB, but you also run the risk of cracking the block or head during the expansion rates and vibrations from the cylinder pressures and thermal build ups and cool downs. And studding isn't maintenance free you need to always retorque now and then. As you also point out the material of the gasket is key, Mls gaskets are Stronger but the most important aspect is the finishing cut of the block and head and also the material on the mating gasket face for each.

[@URBANAMERICANTAC]

I’m with you. I love that little 3 banger but I really would have loved to see them innovate on a little 2.2 4cyl. That thing would be a ripper for sure

[@davothegreat9990]

How much can the stock clutch and gearbox handle?

[@ruikazane5123]

The split block design reminds me of sport/supersport motorcycles. The open deck could still be reinforced with a CSS or an entirely billet block set (yes, both halves) if there is reason to worry about bore "walk". Those are head BOLTS! Studs would work better of course and without wearing out the block threads for those. Thick cylinder walls - would be surprised how ringing the block and using a copper gasket would work! (and rally regulations do limit power to about 400 horsepower or so? Then that's perfect as it is for the "intended" purpose so no complaints to say)

[@1magnit]

When you take it apart, it's the reverse of building it. Therefore you figure out a way to check the torque of each head bolt and work out how many are loose and how much they are loose by. That's before you undo any of them.

[@MotiveVideo]

We did. none were out of spec

[@1magnit]

@@MotiveVideo You probably did it wrong? What method did you use?

[@notaboutit3565]

@@1magnit bruh lmaooo

[@dannythomas7902]

I had 2.2 celica ran 16lbs through it for 5 years in 2001 and it only broke because Watergate jambed, 768 ft LBs torque, toy can be indestructible sometimes

[@HHCHunterYTC]

New yaris vid just dropped. POGCHAMP

[@Andrew260RS]

Awesome video. I am wondering if the limiting factor is the open deck design of the block. It's a shame Toyota went with a open deck as that might be a limiting factor. Comparing it to something like a EJ25. It has slightly thicker walls just from visuals. The EJ25's open deck block are infamous for moving around hence why there is kits to convert your open deck block to a closed deck block. However, they move around under the power your are making. You are making some serious power out of a 3 cylinder and wondering if simply your bores are moving causing the head gasket to fail.

[@Low760]

In five years time people will be over these cars like other fwd things

[@HL-hw6qp]

@@Low760 it’s AWD.

[@Andrew260RS]

@@Low760 doubt it seeing this engine is going in all GR line up. I wouldn’t be surprised if this engine goes into the 86 in a couple of years.

[@khamid1]

@@Andrew260RS ae86 swap has already been done

[@Andrew260RS]

@@khamid1 Not talking about engine swaps. Toyota is confirmed the engine in the Yaris is going in the future GR Corolla. Rumours are it may go into the 86 down the line.

[@rodbrown8306]

These video's are so informative,...thanks for the effort. Yeah just a gasket weakness exposed under pressure, great info for Toyota. Great work. Any chance of a stroker? 2.2lt /4cly yes.

[@SB-vb8ch]

Water "wearing" through? Combustion gasses making their way through is most likely the culprit. The head bolts will be stretch type so more torque won't give you anymore clamping force. Either more clamping force or a wire ringed gasket face to give localised clamp on the gasket & stop it moving around. It's just a wire ring so can be any shape. Basic old school stuff really.

[@sigmaprojects]

Glad someone else realized wire rings can be any shape.

[@zokusharuuku1091]

So let’s say you run a much larger turbo at 35psi would you still have this head gasket issue? Would it be possible to tighten the factory studs down more to help prevent this?

[@ANDYblacks13]

could it have blown the gasket because its an open deck and the power its making is flexing the bores and wearing away the gasket coating till it can push coolant past? seen it on a few other open deck engines focus rs 4 pot is 1 & my 1nz-fe early yaris 1.5 engine ,also a few methods to convert to semi closed deck some seem more effective than others,dowel rods machined to fit into the waterways seem prone to crack the bores as not fully supporting the load imo ,I prefer a nice machined complete insert that fits into the whole water ways fully supporting the bores from flexing , just my guess as to poss cause it failed like it did

[@JRosey777]

The ECOTEC 2L once they get 600whp use a girdle to support the top of the bores to stop them moving. Not a cheap solution!

[@ANDYblacks13]

@@JRosey777 for my 1nz-fe toyota yaris 4 pot the coolant jacket insert plate to support the bores is only £90 made from 10mm thick CNC'd aluminium plate

[@anonymous5072]

Although there is a problem with not having an after market head gasket would you think of doing a cylinder bore out and porting to the exhaust and intakes

[@micahlovejoy81]

This is a engineering feat by Toyota. The aftermarket for this engine is going to be insane.

[@billyjoe3309]

10 seconds in to the video. I'm subbed. I love 3 pots!

[@TheMostSmokeCrew]

I agree that I would like to see a performance 2+ liter 4 cylinder turbo engine built by Toyota. The 4 cylinder would make more power and cost more for higher tolerances. They already have the 2 liter turbo Supra motor and it doesn't make much better power than the GR Yaris 3 cylinder. A new 4 cylinder in the GR Corolla might not make it an effective sale for Toyota's current market. They might drop different editions of the new Corolla though.

[@kaloyancholakov3725]

This video is like overclocking a cpu and pushing it's limits to the max. Fascinating!

[@barsaf9989]

This has been done since the early 1900's.

[@newell418]

This is ridiculous! Boys I'm hooked! Getting the new GR Corrola!! Pummmmmped

[@chippyjohn1]

Any idea how much the long block weighs? I see big potential in this engine for aircraft. Although it has a long stroke and rod to stroke ratio is 1.6, sitting at 4000 would be about 150kw. Torsional harmonics are another factor, but someone will try it.

[@jazbah2194]

Do you think one could bore the block 10 or 15K and hone the head pocket to take those 4 corners out of the Cyl. wall and the head to use a slightly larger round crush gasket? Looks like there is enough metal in both the block and the head to open it up a little to make it all round.

[@arnaumarce3943]

Hi guys, can you share the final torque you applied to the head bolts? Thanks a lot!

[@setoman1]

That's actually hilarious. I see a lot of comparisons drawn between WRX and Yaris. That's one more thing we can check off the list.

[@antonisp6629]

Great video and technical analysis. Looking for the "why" is often overseen. Imagine if toyota put 2 of these engines together for a 3.2 V6 twin turbo... pssssssh

[@wax333]

Land cruiser 300 series v6 hmm 🤨

[@regno78]

Two inline=New engine for supra

[@antonisp6629]

@@regno78 ahhhhh yesssss

[@antonisp6629]

@@wax333 that would be really really interesting

[@santosj2274]

Or 4 of these for 6.4L V12 quad turbo

[@bobkin611]

So basically the motor and car handles the 500hp fine. Just the headgasket gave out. Thats crazy.

[@duddsification]

Toyota should put two together 3.2 stright 6 perfect for the supra

[@robertroccii7117]

So it´s a phantastic little Engine. Only the Gasket can´t handle too much Pressure or Horspower. My thoughts are that 350HP are more than enough for this tiny little car. You can have surely a lot of Fun with 350HP.

[@Jake_Hamlin]

350kw. Could be the studs not the gasket

[@ausgunroy1687]

It's actually 485hp at the hubs. Power figures were in KW, that is a huge figure for a 1.6L 3cyl.

[@liamjohnson8497]

350kw not hp. 350kw = 470hp. For reference, imagine if they somehow made a 3.2 v6 that could make 700kw/940hp or there abouts unopened 😳

[@Jake_Hamlin]

@@liamjohnson8497 j series will do that for probably the amount of runs they did. Not reliably but 10-20 passes down the strip..

[@caribbeangtr8077]

This is a fantastic purpose-built car that will satisfy anyone who wants a quick factory car, but honestly, I wish it had the best 1600 engine in existence, the 4AGE 20V with almost infinite proven support up to a 2 liter and 1000 HP.

[@RandomlnternetGuy]

Who makes your intro music?

[@nazmo_za9654]

sounds like doom

[@josefgordon7712]

So dewy eyed over the prospect of the GR Corolla coming soon. This gives me peace of mind for "just" wanting to get 300whp.

[@willyjimmy8881]

Lol you about to be seriously disapointed

[@josefgordon7712]

@@willyjimmy8881 seeing as how the GR Corolla is making 300 crank HP I'm more than happy actually.

[@Ingmar72]

I would like to ask you guys if you ever considered use a water-methanol-injection? As far as I know, this is ideal for a high performance turbo engine to keep it cool and clean

[@g60force]

i don’t know much about cars but it the final part of the video you said (sorta) by all this excessive heat and cooling down, rinse / repeat… I then realised, did you perhaps have to retorque the headbolts / check if they are still up to spec… and yes you already suggested given them a bit more then factory but you didn’t do that right?

[@zokusharuuku1091]

I’m imagining a bored out sleeved version of this with a fire ring gasket and forged pistons and a massive turbo😍

[@bradyf8351]

I’ve been looking for this video 4 the last hour! Thanks for doing this. You alone sold me on this car. I just would like to see it in the body of the new 86/brz would that be doable with the awd with out having to do a ton of customization to make it work ?

[@williamharris-blake1547]

What is the song playing in the background?

[@brendanrandle]

as far as weak links go a head gasket is far from the worst to have

[@rondoschiavoni8840]

I say you are right about the in line 4 cylinder

[@creed2409]

Theres lots of company's that laser cut sheet material who only need a template or design file. Have one cut from a single piece of copper or stainless sheet. Just an idea. I have a motorbike at home that has a solid copper cylinder head.

[@Mortalomena]

I dont think the power per se is the problem, its what boost/exhaust pressures you have been running?

[@_AlexanderVargas]

Great video guys!

[@elihernandez330]

I'm not that surprised a 3 cyl made this much stock power but it's got to be the sturdiest open deck design I've ever seen unlike those bad ford ecoboost designed inline engines which are just bad.

[@barsaf9989]

How. They made 450+ hp lol

[@sasquatchfoote8235]

Throw the head bolt get or make a Stud kit and O ring the block with piano wire. Conrod bearings will be next problem.

[@captainplanet43]

I wish that toyota would stick two of those engines together and put it in the Supra

[@5IMPStompDownPT]

you guys think the new i20N with the 1.6motor with 4 pistons can make the same power or similar like gr yaris ?

[@archie_bunker]

Definitely wont last aslong as that reliable yaris

[@jae9843]

So the block being an open deck design doesn't make the hg more susceptible to leaking/failure under high boost compared to semi-closed/closed designs?

[@MotiveVideo]

The cylinder walls are really thick so it appears to be plenty strong

[@tahustvedt]

Do you really need the reliefs for the valves in the head gasket? As long as there's any clearance at all it'll be fine and the stock gasket looks like it's got more clearance than absolutely necessary judging from the head and valve direction.

[@familypokemon4736]

Like he said “4 cylinder, 2.0!” New Celica GR-4 PLEASE! Give 400z a competitor! 🔥

[@Mandor621]

Or maybe GR Celica 4 , i think it's also fit

[@mitchelllang4396]

can u get an a45s next plz i think its got 36psi stock

[@mugenrios2k]

what turbo do you believe will end up on the GR Corolla.. would love to see a Variable vain setup but who knows....

[@MotiveVideo]

its same as Yaris

[@brito9817]

Só basically, it's one hell of a good racing category engine. Well done Toyota.

[@DrunkAnton]

I dont know shit but ive seen people put sleeve in K series motors if you were to do the same thing but increase the bore so that the valve clearance is not needed could you use that crush ring? fire ring etc and push the motor further etc? 700/800hp?

[@capnthepeafarmer]

This is great assessment of what's happened in the engine. Thanks for showing it off!

[@avancalledrupert5130]

I never thought I'd ever do the finance thing . But for a gr Yaris I might. But 18 months waiting list. There £7k more than new second hand .

[@NatedoggZombies]

That Mx-5 run though

[@200mphgt40]

Why would you 'nip up the stock head bolts (not studs) a little more upon reassembly? I'm assuming they are torque to yield studs, so any increase in tensile load won't be linear with any increase in torque or turn of nut. Dunno, talking theory, not explored the reality of TTY head fasteners that much. They're more an automated assembly consistency enabler rather than a hand assembled performance engine solution for mine.

[@MagicianMan]

Aren't they already racing the GR Yaris in the WRC Championship. One would expect that Gazoo Racing already have uprated head gaskets & bolts for the GR Yaris. Not sure how you would be able to gain access to them though??

[@mahlok8210]

Gr corolla 300hp... New car... 💪

[@goodie2shoes874]

Could you fit anything bigger than a 4 banger in the Yaris or Corolla

[@vwrxlasvegas]

Replace it with better head gasket and head studs. Replace turbo with supercharger and increase boost a little higher to compensate lost hp with supercharger. Then u have a bad ass reliable 3 cyl!

[@quacko11]

Do you guys know if the GR yaris transmission is the same the gr corolla im worried my syncronizer hubs are going to take a shit my goal is 400 to 450 hp to the wheels.

[@MotiveVideo]

Stock box is fine for 500

[@quacko11]

@@MotiveVideo i just am seeing multiple people with the GRC breaking them at 340 lb ft of torque was just curious if they are the same or if us americans got recycled trash from another car.