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Classifieds » Parts Wanted » 20v port and polish? 20v head 4sale

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fergo308
Forums Junkie


Location:
Eastern Sydney
Registered:
May 2002
 
Re: 20v port and polish? 20v head 4sale Sun, 21 July 2002 08:40 Go to previous messageGo to previous message
Hi,

I wouldn't expect more than a couple of horsepower increase from a full port and polish job on a 20v head,especially if that is all you do. (i.e. no cams,no compression increase,etc)

it'll all be increases up high as well,and if you do a lot to the ports,at the expense of the small bottom end these engines already have.
the 20V is not a torquey engine,it's meant to be revved hard to get it's best performance.
the design has sacrificed most of the low down power for top end flexibility.

if you're looking for a small increase down lower in the revs, try playing with the VVT switching point. turn the inlet cam advance on a bit earlier,say at 3000rpm. this should gain you a little torque,but don't expect miracles.
fitting longer trumpets to the throttles might help as well,especially if your current ones are under 3" long.


I would be interested in the spare head you have. what would you want for it? where are you? what parts are you looking for as a swap?


Justin...
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SubjectPosterDate
Read Message   20v port and polish? 20v head 4sale super strut 20vSun, 21 July 2002 03:26
Read Message   Re: 20v port and polish? 20v head 4sale  fergo308Sun, 21 July 2002 08:40
Read Message   Re: 20v port and polish? 20v head 4sale LeighpTue, 20 August 2002 00:43
Read Message   Re: 20v port and polish? 20v head 4sale super strut 20vSun, 21 July 2002 17:19
Read Message   Re: 20v port and polish? 20v head 4sale super strut 20vSun, 21 July 2002 17:24
Read Message   Re: 20v port and polish? 20v head 4sale fergo308Sun, 21 July 2002 20:48
Read Message   Re: 20v port and polish? 20v head 4sale mrshinMon, 22 July 2002 00:18
Read Message   Re: 20v port and polish? 20v head 4sale super strut 20vMon, 22 July 2002 01:36
Read Message   Re: 20v port and polish? 20v head 4sale fergo308Mon, 22 July 2002 08:54
Read Message   Re: 20v port and polish? 20v head 4sale super strut 20vMon, 22 July 2002 19:06
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