Harvey Smith Modified 3 Bolt Uppipe
04 June 2009, 12:26 PM
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Harvey Smith Modified 3 Bolt Uppipe
I have just fitted one of Harvey Smiths modified 3 bolt upipes for the GT Spec 3 Bolt Headers.
What a difference these have made to the spool up of the car prior to fitting the car would spool 1 bar at about 3500 rpm and 2 bar at 4100 rpm, with no other modification the car is now spooling 1 bar at 3100-3200 rpm and 2 bar at 3700-3800 rpm.
If you have a set of 3 bolt headers this is a great modification to help the spool of the turbo.
My car is a Hawkeye STI with FP Red Turbo running 560bhp
What a difference these have made to the spool up of the car prior to fitting the car would spool 1 bar at about 3500 rpm and 2 bar at 4100 rpm, with no other modification the car is now spooling 1 bar at 3100-3200 rpm and 2 bar at 3700-3800 rpm.
If you have a set of 3 bolt headers this is a great modification to help the spool of the turbo.
My car is a Hawkeye STI with FP Red Turbo running 560bhp
04 June 2009, 05:07 PM
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I just bought the up pipe as I all ready had the headers on - about £160 as I had to buy a new 3 bolt gasket and cant remember exactly how much that was.
Speak to harvey for the exact price.
Speak to harvey for the exact price.
05 June 2009, 01:59 AM
#6
I sell the three bolt flange headers for £375 complete with the up-pipe supplied.
Wrapping with DEI heat wrap and doing each runner separately, not two or four at a time is £95 and a work of art.
I have been working on perfecting the design of the performance three bolt up-pipe since last March and after a lot of flow bench work we came up with the final design and product release after numerous test sessions this March.
A number of owners suffering late spool from tubular headers have been pleasantly surprised.
The release price of the up-pipe, stainless steel, slip jointed, DEI wrapped with 5no. new Subaru studs is £139. Overnight delivery £12.50 but the price will be reviewed in the near future.
Wrapping with DEI heat wrap and doing each runner separately, not two or four at a time is £95 and a work of art.
I have been working on perfecting the design of the performance three bolt up-pipe since last March and after a lot of flow bench work we came up with the final design and product release after numerous test sessions this March.
A number of owners suffering late spool from tubular headers have been pleasantly surprised.
The release price of the up-pipe, stainless steel, slip jointed, DEI wrapped with 5no. new Subaru studs is £139. Overnight delivery £12.50 but the price will be reviewed in the near future.
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05 June 2009, 10:49 PM
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As above, i am as impressed. Same swap, only my car was remapped also at the same time. Same improvements which may seem a little in numbers, but in gear driving has changed a lot with more response and better boost.
Oh i forgot, i did have a 3 port boost valve as well.
Oh i forgot, i did have a 3 port boost valve as well.
06 June 2009, 12:38 AM
#9
My Paypal and email is harveysmith1@btopenworld.com Add 3.5% for their fees or email me and I will send my bank details so you can arrange an internet transfer.
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