Quote Originally Posted by Weq
Ive always heard N/A specific cams hinder turbo performance moreso then a stock cam.
Hey Weq,
Its not just the CAMs but the engine in general.

In a really brief nutshell:

The things that makes a high performance NA engine, directly contrast those things that make a high performance turbo engine.

a very broad statement is Power = Torque x Revs.
so *IF* all things remained equal, the higher you rev an NA engine the more power you make (in reality this isnt the case of course).

so, high revving NA engines are typically high compression, short stroke, and of course have a fair bit of valve overlap at high rpm (and about a million other things)

*trying not to be long winded here*

With forced induction, just the high compression (causes detonation) and valve overlap alone will already compromise running higher levels of boost.

an interesting setup is those typically run in low boost turbo applications in euro cars like the Audis. They have a small turbo running low boost. so it spools up real quick, but they engines also have a relatively high compression ratio (around 9~ish) so that when its off boost its still really responsive. These cars were never made to make high power (around 110kw out of the 1.8T) but had huge amounts of mid range torque.

So... if you're gonna turbo your Honda with stock internals, the best application is a low boost setup I reckon.



Chris