m325i 709 Report post Posted May 26, 2005 I have found a second hand exhaust manifold. But i understand they changed mid 87? It is from a pre FL '87 325i. Is there anything i can look for to make sure it will fit my 1986 m325i? Cheers Quote Share this post Link to post Share on other sites
CaM 0 Report post Posted May 27, 2005 see if they match up aesthetically, form that it should be sweet Quote Share this post Link to post Share on other sites
Guest Andrew Report post Posted May 27, 2005 just look if all the bolt holes are in the same place on the head and on the downpipe Quote Share this post Link to post Share on other sites
bumpstop325 0 Report post Posted May 28, 2005 what andy said. there is one big difference between the two exhaust manifolds. on the down pipe flange, one will have 3 studs and the two pipes will have a common flange. the other one is each pipe will have 3 studs for each pipe. There are two flanges for this set up. One for each pipe. The flange is in a triangle shape. Where the other is a sort of kidney shape. SO: 1: 2 flanges, triangle shape, 6 studs total. 2 pipes with 2 flanges 2: 1 flange, kidney shape, 3 studs total. 2 pipes with 1 flange Quote Share this post Link to post Share on other sites
gmccormack 0 Report post Posted May 28, 2005 And there is another ..........single flange with 4 studs Quote Share this post Link to post Share on other sites
m325i 709 Report post Posted May 29, 2005 Could asume that a pre facelift 1987 325i, would have the same one as me? Quote Share this post Link to post Share on other sites
Guest Andrew Report post Posted May 30, 2005 Could asume that a pre facelift 1987 325i, would have the same one as me? probably Quote Share this post Link to post Share on other sites