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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 11-03-2015, 01:59 AM   #1
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Join Date: Oct 2015
Posts: 10
M52 header on M54

I've been working on my 330 for about 4 months now in my spare time which is about 5 hours a week . I'm doing an engine swap since I overheated the original and now the repair turned into the project . I am now replacing every part that I come across that looks questionable and the exhaust manifold is one of those parts . When I removed them from the head both sides rattled , the engine had 120,000 miles on it and so I had to find replacements but I wanted something freer flowing . I read on here about this swap and so I'm going for it. So far so good but I did need to do some minor work but other than that it's a direct bolt on . The only question now is do I leave the heat shields off or run them because I'm leaning towards not using the shields and admiring the exhaust side of things. Click image for larger version

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ID:	616968 from what I can see there is less heat area from the top on the M52s compared to the stock ones and I also ceramic coated them here at the shop I own so the ceramic should serve as a slight barrier and insulate the heat so the area around the headers should be cooler than normal. From there I'll have a shop I know add the cats down stream. Any thoughts on the shields?Click image for larger version

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