A bit like blue printing an engine smoothing out all the birs on the inside of the casting will help. However a manifold I resently saw in America s/s was sold at 57.00 ponds with 40.oo ponds postage so keep looking on ebay.
Regards
Jeremy
2002 cabriolet for 25 years.
----Original Message---- From: ... Date: 10/02/2008 12:19 To: "BMW '02 Owners"<...> Subj: [bmw02] Standard exhaust
I was wondering if there are any gains to be had by modifying the standard cast exhast manifold (smoothing out casting marks & matching to the head/downpipe) ?? I know the best route is a tubular manifold but I can't afford it, what with some other bits that need doing (new front wing & some paintwork). Does anyone know if it's worth doing as I have a spare manifold in my shed?? Thanks.
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