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Bmw e30 m30 exhaust manifold??
Posted: Fri May 06, 2011 10:30 pm
by bimmer1987
Hi all
I am coming to the end of my e30 m30 conversion, and i have just the last two things on my list...the prop i have under control but the manifold on the other hand is another story...
My Engine was out of a e32 735, the exhaust manifold closest to the bulkhead clears the steering knuckle but the one closest to front of the engine doesnt..any help would be great...
Cheers jay
Posted: Fri May 06, 2011 10:38 pm
by johnl320
I removed it cut the exhaust flange off the end and turned it 90 degrees and welded it back on.
Careful not to sheer an exhaust manifold stud like I did

Re:
Posted: Fri May 06, 2011 10:42 pm
by leeparkes
It should clear without modding, what steering rack you using?
Posted: Fri May 06, 2011 10:48 pm
by johnl320
I think there are differences between manifold of e32 and e34, mine is from an e32 and deffo needed modding
Re:
Posted: Fri May 06, 2011 10:51 pm
by leeparkes
I know theres a manifold and it looks like a long log style but i thought these were on earlier donks?
Re:
Posted: Fri May 06, 2011 11:22 pm
by bimmer1987
Im using the standard steering rack...i lined up the left hand mani and i know i can work with that but the right one..im sure when i lined it up it sat directly facing that knuckle...the cut and bend 90 sounds like an idea...
Re:
Posted: Sun May 08, 2011 12:11 am
by zaust
I had to cut turn and shut mine too.
Re:
Posted: Sun May 08, 2011 12:20 am
by Rav335uk
I didn't cut or shut mine, I was liucky enough to heat up the flange and turn it 90 degrees
Re:
Posted: Sun May 08, 2011 9:01 pm
by MJJ_ZX6RR
Jay,
My E32 rear manifold had to be cut and shut to fit. I eventually replaced it with a full stainless BTB system, so I could possibly be tempted to let the full E30-M30 Powerflow system go if you fancied an easy route.
It would need to be worth something though, else I'll just keep it in the garage as a backup in case I ever sell the BTB.
Pics below (system nearest the fence) that may help show the manifold.
Martin.
