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Location:
Eastern Sydney
Registered:
May 2002
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Re: 20v port and polish? 20v head 4sale
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Sun, 21 July 2002 08:40
 
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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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| | Subject | Poster | Date |
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20v port and polish? 20v head 4sale
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super strut 20v | Sun, 21 July 2002 03:26 |
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Re: 20v port and polish? 20v head 4sale
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fergo308 | Sun, 21 July 2002 08:40 |
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Re: 20v port and polish? 20v head 4sale
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Leighp | Tue, 20 August 2002 00:43 |
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Re: 20v port and polish? 20v head 4sale
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super strut 20v | Sun, 21 July 2002 17:19 |
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Re: 20v port and polish? 20v head 4sale
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super strut 20v | Sun, 21 July 2002 17:24 |
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Re: 20v port and polish? 20v head 4sale
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fergo308 | Sun, 21 July 2002 20:48 |
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Re: 20v port and polish? 20v head 4sale
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mrshin | Mon, 22 July 2002 00:18 |
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Re: 20v port and polish? 20v head 4sale
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super strut 20v | Mon, 22 July 2002 01:36 |
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Re: 20v port and polish? 20v head 4sale
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fergo308 | Mon, 22 July 2002 08:54 |
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Re: 20v port and polish? 20v head 4sale
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super strut 20v | Mon, 22 July 2002 19:06 |
