Location: Brisbane / Gold Coast
Registered: May 2002
Re: Best flowing 4age head?
Sat, 16 July 2005 02:09
ae86drift wrote on Sat, 16 July 2005 03:01
more boost = more air = needs largest ports possible = bigport 16v
= wrong.
The air doesn't flow any faster, just under more pressure. Larger port size is only needed if the air speed is getting too high, and that's hard enough to do with the small port 16v.
I'd personally go for the 20v head as they have a larger valve area and the VVT gear helps the turbio wake up earlier than a fix cam does.
(This is in fact the engine that I'm building next year)