17" is for 4cyc
Join Date: Aug 2002
Location: in a paved palace !
Re: AU XR8 Headers - cleaning up header pipes
JC, I was just shown the differences the day before yesterday while I was getting new extractors fitted to mine.
My exhaust guy had a Series 1 OE header he showed me and man are they small ports (even compared to my Series3 OE headers) for the exhaust to get through and yes the weld would make some impact on the exhaust flow. They are not timed as they say in the game (I am not an expert but was explained this and it makes sense) meaning each pipe are not the same length or similar by the time they come in to meet the collector. (Aftermarket ones are,thats why the difference is felt)
It would be a fair bit of work and time (but you seem to have plenty with all the mods you do lol) but I'm sure it would help your exhaust flow a little.
Then again if I decide not wanting to keep my Series 3 originals I'm sure we could come to a fair price for them,because believe me if yours are the same as I saw compared to mine its "chalk and cheese"......Ford did a half a good job with the Series 3 I see now, don't know about S2....
I say half job because through connections and advise got my hands on a latest design Genie Headers, yes against the norm what everyone is buying in brands but I thought heck they were once the fore runner in this game (meaning they are not dumb),they let the others take more market share and didn't advertise as much.
I understand they are getting serious again. Well my car is transformed,taken away the lag/sluggyness down low before 4grand where I was most disappointed while in traffic (I am in Sydney) it definately pulls better now and man the sound is horn.....
Going back to half job,yes they put better headers on Series 3 but why not do it right the first time.
Sorry for the long post ppl and hope this helps you out JC.
'02 XR8 S111 220kw + a little more