[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: S4 20v vs S2 10v



> Re:  The center coils:  my guess is this is a vital component when running
> hiboost with hi compression, not so key when using the low comp motor.

my understanding is that the 9.3 compression on the S4 is for
off-boost response.. once the turbo spools up, CR is really quite a
meaningless number, because 2 bars of boost is 2 bars of boost,
regardless of what the geometric dimensions of the engine are.  i.e. 2
bars in a 9.3 compression engine is equally likely to detonate as 2
bars in a 7.8 engine, all other things being equal.. no?

i also like the S4 because one doesn't need headlight upgrades, it has
a much stiffer body and it is just a tad more civilized all round.  (i
still hate that little radiator tucked on the left side with a single
electric fan deal that the older cars have)


eliot