Gruppe s headers and Harvey smith uppipe
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15 August 2012, 10:45 PM
#15
Just to clear this up guys.
What you have here is a 2 bolt header set, tubular along with a 2 bolt "TRICK" uppipe. Do not confuse this with the 3 bolt TRICK uppipe intended solely for use with the GT2 Spec type 3 bolt tubular header set or the matched performance uppipes which are intended for ported headers or standard headers.
The Trick 3 bolt or Trick 2 bolt are £155 each plus delivery. Stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs and both of these uppipes have been extensively tested to optimize the gains, including flow bench testing, and as indicated above the gains in spool, torque and response on the 60mm tubular header sets (measured at the flange) is quite startling.
The purpose designed matched uppipes (of which there are six) are stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs (£145) but to a different design to accommodate the standard headers or ported headers where the collector exit is much smaller ie. slighly over 40mm and not the 58-60mm diameter where the Trick uppipes serve a different purpose. It is the purpose designed matched uppipes that are used as decat pipes. As the name suggests the uppipe is matched to the turbo in use and engine capacity/spec. HTH.
What you have here is a 2 bolt header set, tubular along with a 2 bolt "TRICK" uppipe. Do not confuse this with the 3 bolt TRICK uppipe intended solely for use with the GT2 Spec type 3 bolt tubular header set or the matched performance uppipes which are intended for ported headers or standard headers.
The Trick 3 bolt or Trick 2 bolt are £155 each plus delivery. Stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs and both of these uppipes have been extensively tested to optimize the gains, including flow bench testing, and as indicated above the gains in spool, torque and response on the 60mm tubular header sets (measured at the flange) is quite startling.
The purpose designed matched uppipes (of which there are six) are stainless steel, slip jointed, DEI heat wrapped with five new Subaru studs (£145) but to a different design to accommodate the standard headers or ported headers where the collector exit is much smaller ie. slighly over 40mm and not the 58-60mm diameter where the Trick uppipes serve a different purpose. It is the purpose designed matched uppipes that are used as decat pipes. As the name suggests the uppipe is matched to the turbo in use and engine capacity/spec. HTH.
Last edited by harvey; 15 August 2012 at 10:48 PM.
18 August 2012, 10:21 PM
#25
19 August 2012, 09:36 AM
#26
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Sorry to hijack guys but need some advice; are these any good:
http://www.ebay.co.uk/itm/Impreza-wr...ht_1425wt_1163
And if not, why are Harvey's better??
http://www.ebay.co.uk/itm/Impreza-wr...ht_1425wt_1163
And if not, why are Harvey's better??
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