Toyota GR Yaris

[JD001]

Originally Posted by why?

Toyota knows what the aftermarket can do to a car's reputation, and is courting them by making sure what they put out has some reasonable amount of head room.

Do you know whether anyone in the aftermarket world is looking at the GR4? Any early releases to the "great and good"?

[Irace86.2.0]

Originally Posted by JD001

Do you know whether anyone in the aftermarket world is looking at the GR4? Any early releases to the "great and good"?

Are you asking if they are giving out inside information to parts suppliers and tuners like they did with the Supra or like Apple does to case manufacturers with new iPhones? I doubt such things would be leaked.

Like I have said before, a next gen could have the same power and displacement, and I would be fine with that. If they put in stronger rods, larger bearings, engine support/girdle, fixed cornering oil/fuel starvation and gave us a stronger transmission, and if the chassis was stiffer and the rear seats were dropped in favor of a better 50/50 distribution then I would be good. I would buy that car 100%. I can tune more power. I just don’t want a 350hp/250tq ceiling before the motor needs to be built or transmission swap needs to happen.

[JD001]

Originally Posted by Irace86.2.0

Are you asking if they are giving out inside information to parts suppliers and tuners like they did with the Supra or like Apple does to case manufacturers with new iPhones? I doubt such things would be leaked.

Like I have said before, a next gen could have the same power and displacement, and I would be fine with that. If they put in stronger rods, larger bearings, engine support/girdle, fixed cornering oil/fuel starvation and gave us a stronger transmission, and if the chassis was stiffer and the rear seats were dropped in favor of a better 50/50 distribution then I would be good. I would buy that car 100%. I can tune more power. I just don’t want a 350hp/250tq ceiling before the motor needs to be built or transmission swap needs to happen.

For homologation purposes certain items will need to match the rally car therefore I presume chassis stiffness, certain engine parts and other bits and pieces will tolerate tweaking.. I can see 300bhp could be attainable and that would be more than enough for a little pocket rocket..

[Irace86.2.0]

Originally Posted by JD001

For homologation purposes certain items will need to match the rally car therefore I presume chassis stiffness, certain engine parts and other bits and pieces will tolerate tweaking.. I can see 300bhp could be attainable and that would be more than enough for a little pocket rocket..

I just realized after my rant that I lost track of the thread topic, and I jumped to talking about the next gen 86 lol

Because of the rules, it seems like the car could be overbuilt, so I agree.

https://en.wikipedia.org/wiki/World_Rally_Car

The 1.6 L turbo-charged engine was retained in the 2017 World Rally Car regulations, but the turbo restrictor diameter was increased from 33 mm to 36 mm, increasing the engine's power output from 310 bhp (223.7 kW) to 380 bhp (283.4 kW). Minimum vehicle weight was decreased by 25 kg.

[sato]

Originally Posted by Guru Woodman

It seems that the petition to get in to North America is getting traction (+16k signatures)

It is even grabbing some attention on social media. Toyota USA is on Twitter asking about the GR Yaris.

Well, I pitched in!

[strat61caster]

Originally Posted by why?

Who knows. But if you can get 20 hp out of the twins just changing the header, saying no one will get near 300 out of this engine is silly. I'd be stunned if you leave the engine and turbo stock but add tuning and e 85 you could not hit 300. I'd also be stunned if the engine wasn't totally overbuilt so you didn't have to open it up until some gigantic amount of boost was being pushed through it.



I'm not saying it can hold at some dumb number, but thinking the proper bolt ons and tune cannot get to 300 is silly. That isn't a massive amount extra. Toyota knows what the aftermarket can do to a car's reputation, and is courting them by making sure what they put out has some reasonable amount of head room.

300 bhp (at the crank), I agree, should be possible with some bolt ons and e85.
300 whp I'll bet against, that's almost what the wrc car puts out, someone will try and I bet it blows.

They can't make a profit overbuilding the engine compared to the wrc version. I guarantee it has cheaper pistons and rods and a less aggressive cam, I wouldn't be surprised if the wrc cars have intakes/exhausts sculpted by hand and checked on flow benches while the consumer products will make sacrifices for mass production.


Please show me the +20hp header without a tune, I must have missed that one.

There will be so few of these made that the aftermarket will be weak aside from stuff that can be easily brought over like coilovers due to shared tnga components.

[Guru Woodman]

Originally Posted by sato

Well, I pitched in!

Too late Sadly not for North America. They decided in all their wisdom to give us the GR Corolla Hatch instead of the Yaris.
I am still hoping that it will come with AWD, but IO am not holding my breath.

[JD001]

Originally Posted by Guru Woodman

Too late Sadly not for North America. They decided in all their wisdom to give us the GR Corolla Hatch instead of the Yaris.
I am still hoping that it will come with AWD, but IO am not holding my breath.

The "hot" Corolla will be competing with the Focus ST.. However, if Ford hadn't cancelled the next gen RS then who knows?? You may have got your AWD GR Corolla..

[Irace86.2.0]

Originally Posted by strat61caster

300 bhp (at the crank), I agree, should be possible with some bolt ons and e85.
300 whp I'll bet against, that's almost what the wrc car puts out, someone will try and I bet it blows.

They can't make a profit overbuilding the engine compared to the wrc version. I guarantee it has cheaper pistons and rods and a less aggressive cam, I wouldn't be surprised if the wrc cars have intakes/exhausts sculpted by hand and checked on flow benches while the consumer products will make sacrifices for mass production.


Please show me the +20hp header without a tune, I must have missed that one.

There will be so few of these made that the aftermarket will be weak aside from stuff that can be easily brought over like coilovers due to shared tnga components.

The FA20 puts out 200hp and holds about 350whp before needing internals, which is about double the power. Some have done more, but reliable power is 350whp, which is equal to about 280whp on a 1.6L, except the 1.6L is built for boost and has 268hp. If Toyota is building reliability into that power plant then it should definitely be able to add an extra 50-75whp with E85.

https://en.wikipedia.org/wiki/World_Rally_Car

Exotic materials (titanium, magnesium, ceramics and composite) were forbidden except when present in the base model.

https://toyotagazooracing.com/wrc/cars/2020/

https://www.wrc.com/en/championship/...ategories/wrc/

Cylinder block and head based on those in the standard road car.

Modifications allowed to crankshafts, con rods, pistons, cylinder linings, valves and camshafts.

The engine will definitely be reinforced for rally racing, but I'm sure there will be room for power because of the limitations on materials and block/heads. The move to a 3 cylinder is probably to improve flow of air into the cylinder with larger bore sizes, while reducing weight and friction loses. A 4 cylinder could probably be stronger, but I don't see 300whp being a hard number to hit.

[strat61caster]

You clearly don't know how much low volume precision manufactured parts cost.

I do like the comparison to the FA20 on boost, 280whp with full intake, exhaust, tuning and e85 out of the three banger I could buy into. Time will tell if it needs a different turbo to hit that number and I bet it needs a whole new cooling upgrade to make that power for more than a few minutes. But I'd argue that the FA20 is widely considered to not be a 'lots of Head room' engine.

[weederr33]

I'm sure big tuner names like HKS and GEeddy will pop out some parts for the GR Yaris and Corolla. It would be nice to see some aftermarket support. Hell TOMS is doing it with the regular Corolla hatchback lol

[strat61caster]

Originally Posted by JD001

The "hot" Corolla will be competing with the Focus ST.. However, if Ford hadn't cancelled the next gen RS then who knows?? You may have got your AWD GR Corolla..

The US Focus was canned two years ago. There's no 2019 or 2020 models in the US and so far no inkling of a 2021 model.

[Irace86.2.0]

Originally Posted by strat61caster

The US Focus was canned two years ago. There's no 2019 or 2020 models in the US and so far no inkling of a 2021 model.

It probably got canned when I lighter and cheaper Civic Type R bested the RS, proving AWD just isn't always better, especially on the street.

That, and the dealer markups destroyed sales.

[JD001]

Originally Posted by Irace86.2.0

It probably got canned when I lighter and cheaper Civic Type R bested the RS, proving AWD just isn't always better, especially on the street.

That, and the dealer markups destroyed sales.

We have tuning houses in the UK turning out RS's with circa 520bhp.. you can't do that with a front wheel drive..