Thread: Toyota GR Yaris
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Old 05-09-2020, 04:05 PM   #265
Irace86.2.0
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Quote:
Originally Posted by strat61caster View Post
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

Quote:
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/

Quote:
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.
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