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01-21-2011, 06:17 PM
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#21
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Brigadier General 
Drives: 128i convertible
Join Date: Apr 2009
Location: Lexington, SC
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The part number for the exhaust manifolds on the higher rated N52 in the X5 is different from the part number for the exhaust manifolds on our 128s. If you could find the parts in a wrecking yard, it might be an option. New from BMW they are quite expensive.
Tube headers are somewhat infamous for exhaust leaks. Maybe $1500 ones don't leak. Tube headers are not going to be as rigid as a cast iron manifold but with a thick enough exhaust flange and correctly machined they ought to be able to work.
Jim
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128i Convertible, MT, Alpine White, Black Top, Taupe Leatherette, Walnut, Sport
Ordered 5/22/09, Completed 6/4/09, At Port 6/9/09, On the Georgia Highway 6/13/09, Ship Arrived Charleston 6/24/09 at 10pm, PCD 7/21/09  |
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