WHY DOES THE NEW SUBARU WRX/STI HAVE A 2.5 LITER ENGINE WHILE THE MAXIMUM FOR A RALLY CAR IS 2 LITER ENGINE?

There have been a integrate of critical considerations here:
1. Rally cars have been rarely customized Subarus. They run restrictors, anti-lag, law hint and fuel, and so on. Engines have been customarily not a batch blocks.
2. The 2.5L upon a WRX is 1) a selling consideration. 2) a probable complexity (cost-savings) preference to climb a single rsther than than dual engine blocks starting forward. The usually genuine disproportion from STi being valvetrain and ECU.

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2 comments ↓

#1 albo8888 on 08.10.09 at 11:22 PM

yes, the WRC is 2.0, the STi is 2.5, a recent thing, ued to be 2.0. the WRX is still 2.0 though.
2.5 litre helped with the infamous turbo lag common on the sti. also, gives it more rally car performance, as obviously, making a true rally car for the road, engine wise, would not only jack the price up substantially, would fail to meet emission standards and would cost a fortune to run.
so, 2.5 gives you closer to rally car performance, but cheaper and more ‘consumer freindly’

#2 uncle_bo on 08.10.09 at 11:30 PM

because they dont come stock as rally cars prolly. you gotta do an engine swap. Are you sure its a 2 liter limit?

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