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Old 09-09-2013, 02:38 PM   #1
Woofer
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What headers/exhaust manifold are you using on your M or S 50/52 swap?

Hey guys, my leaky exhaust is driving me crazy and I want to fix it.
I'm currently running cast iron m50 exhaust manifold but the custom Downpipe that was made has generic triangle flanges and its just not doing the job. I keep leaking from the flanges and my exhaust shop can not get a hold of BMW flanges for some reason. Now, I'm already 300 bucks in the hole for this stupid Downpipe and BMW wants 50 bucks a flange. I don't really want to spend another 200-300 bucks to get my stock manifolds to work, so I have seen that many guys seem to use cheapo eBay headers (what I should have done from te beginning).
So what are you running on your swap? eBay seems to sell several different types. I want to make sure I order the correct ones.
Thanks guys.
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Old 09-09-2013, 02:44 PM   #2
Dissembler
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stock s52 headers, stock s52 exhaust.
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Old 09-09-2013, 09:33 PM   #3
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^ thanks. Seems like m or s 52 headers will do the trick.
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Old 09-09-2013, 09:52 PM   #4
BmW1819
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alot of guys run those cheap ebay headers but not sure if they will hold up for the tracking and autocross
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Old 09-09-2013, 10:04 PM   #5
SamE30e
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I had e-bay headers on my car. The only down side is, they're kind of raspy.

If you put a resonator in, it quiets the rasp down quite a bit. They do hold up though.
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Old 09-09-2013, 10:22 PM   #6
frankie591
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I have raceland headers (basically ebay thin ss shit) and they are alright. Fitment is a huge issue with all headers made for e36's, and I have had subframe, sway bar, transmission and cab contact issues. If I were to do it all again, I'd use the m52 manifolds that came with my motor and find downpipes to work, or have downpipes made up.
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Old 09-09-2013, 10:48 PM   #7
cormier
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Mine are ebay. I found gaskets for the triangle flanges -- AKG I believe?
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Old 09-09-2013, 11:59 PM   #8
craz azn
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I used generic triangle flanges for my exhaust and they seal great, even without a gasket lol! Maybe your flanges got welded on at not exactly the right angle as your manifolds? Or, its possible they got slightly tweaked when they got welded. Anyways, if you do replace them, try to get M52/S52 manifolds as they look much better But I'd recommend any type of aftermarket headers any day... damn the fitment issues; they sound so much better than stock manifolds! The only way stock manifolds sound okay is with the quietest muffler, aka stock
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Old 09-11-2013, 06:52 AM   #9
E36is
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m50 engine with s52 exhaust headers, imo, better flow with the mandrel bent tubings compared with the cast iron versions. slight increase in torque also (dyno butt)
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Old 09-11-2013, 10:48 AM   #10
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Quote:
Originally Posted by BmW1819 View Post
alot of guys run those cheap ebay headers but not sure if they will hold up for the tracking and autocross
Been running ebay headers for years. they work awesome. Had a bit of a fitment issue with my crossbrace, but I just notched/reinforced it and it worked out fine:

http://www.maxbimmer.com/forums/show...=138342&page=6
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Old 09-11-2013, 07:37 PM   #11
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Wow perfect good to no ;-)
Cause my buddy got one for his honda and it cracked lol
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