If you know anything about multi valve race motors you should know 1)Gas velocity is more important than flow 2)Polish or 'extrude hone' is NOT the only way to get better flow/less 'boundry' friction 3)The 2.5 gas velocity will 'die' if you go too oversize with intake valve. Just my 2 cents from many years on the Cosworth F1 motors of the 70's-80's !
V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
..don't talk about it DO IT !!!
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