Classic Harvey Ported Headers and matched performace up-pipe
24 November 2009, 09:27 AM
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Classic Harvey Ported Headers and matched performace up-pipe
Below is the cost from Harvey plus exchange headers on top of this
Porting Standard Headers for MY ?? £115.00
Remove Heat Shields, lugs and dress £ 15.00
DEI Exhaust Wrap and Wire £ 50.00
Wrap Headers £ 50.00
Overnight Delivery £ 12.50
£242.50
New purpose designed, stainless, slip jointed up-pipe with studs and heat wrapped = £139.00.
TOTAL : £381.50
There are good gains to be had from Ported Headers only but after a while, and with the investment in flow bench time, I realised that further significant improvements were available from a purpose designed up-pipe, specifically matched to my Ported Headers.
The results were surprising, so much so that when I converted the first two cars from Ported Headers only, I concluded the gains were a fluke - these improvements are now the norm.
The Headers and up-pipe have evolved to what we have today. The MK III Ported Headers and up-pipes have been fitted to many cars, show improvements in spool, response, mid range and top end power, and are usually the best option from standard to a long way past 400 bhp.
Spool is substantially ahead of tubular headers by 150-500 RPM.
I am looking £225 for these and the headers have just been freshly wrapped.
Brand new gaskets are also purchased and looking £50 all in for them.
Reason im not fitting is that i need to fit a boss to my downpipe to fit them to a newage so selling them on as dont have the time.
Porting Standard Headers for MY ?? £115.00
Remove Heat Shields, lugs and dress £ 15.00
DEI Exhaust Wrap and Wire £ 50.00
Wrap Headers £ 50.00
Overnight Delivery £ 12.50
£242.50
New purpose designed, stainless, slip jointed up-pipe with studs and heat wrapped = £139.00.
TOTAL : £381.50
There are good gains to be had from Ported Headers only but after a while, and with the investment in flow bench time, I realised that further significant improvements were available from a purpose designed up-pipe, specifically matched to my Ported Headers.
The results were surprising, so much so that when I converted the first two cars from Ported Headers only, I concluded the gains were a fluke - these improvements are now the norm.
The Headers and up-pipe have evolved to what we have today. The MK III Ported Headers and up-pipes have been fitted to many cars, show improvements in spool, response, mid range and top end power, and are usually the best option from standard to a long way past 400 bhp.
Spool is substantially ahead of tubular headers by 150-500 RPM.
I am looking £225 for these and the headers have just been freshly wrapped.
Brand new gaskets are also purchased and looking £50 all in for them.
Reason im not fitting is that i need to fit a boss to my downpipe to fit them to a newage so selling them on as dont have the time.
26 November 2009, 08:30 AM
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Can you confirm these are the mk3 headers/up-pipe? And what model were they from/for as i believe Harvey has several different specs of uppipe depending on model.
Cheers
Pete
Cheers
Pete
26 November 2009, 10:08 AM
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How can you tell the difference?
Last edited by scoobboy; 26 November 2009 at 10:11 AM.
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29 November 2009, 03:32 PM
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They will fit any classic i presume.
ps pete you said tell me if they are gen III i told you they were, you said take pics to confrim, i did that and still you withdrew.
In my eyes thats a timewaster
ps pete you said tell me if they are gen III i told you they were, you said take pics to confrim, i did that and still you withdrew.
In my eyes thats a timewaster
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