are oversize intake valves worth it, some people say "not unless your 600hp" others say yes..

whats the deal.

 

Shorty'z whats up? I too am curious to know. I've been working on building up a head for FI and just got a set of SS valves in standard size. Wondering how much of a difference larger valves will make and what type of machine work needs to be done to the head in order to fit them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Trance minister &raquo;</TD></TR><TR><TD CLASS="quote">Shorty'z whats up? I too am curious to know. I've been working on building up a head for FI and just got a set of SS valves in standard size. Wondering how much of a difference larger valves will make and what type of machine work needs to be done to the head in order to fit them. </TD></TR></TABLE>

sup hmt *****! :D

 

Bump this up for some wanted info

 

earlllllllllllllllll please help us..

 

bump it up again cause im in the middle of gettin my head ported and wanting to know if bigger vavles are better also...

 

as far as i have found, P&P and most headwork, besides maybe cames, will not give a whole lot of gain until your running alot of HP

 

the best head improvement for flow is a valve job, making the air miss the valves better will yield more power than an oversived valve

 

oversizing valves helps, esp. w/boost... intake valves mostly, exhaust is not necsry.

 

In general terms, a .5mm oversized valve is good for about 10 cfm more flow over the stock size when everything else remains equal.

 

thank you earl

 

is this 10cfm at idle, or at full throttle?


Modified by shortyz at 9:07 PM 12/17/2004