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G'day Deep Blonde?
Yes I had the manifold replaced by Autologic in Bentleigh. I look into the cast iron version when I found out that the manifold looks like 2 layers of pressed tin but the versions around at the time suited the earlier model engine. I could not find anyone in Oz who has either got one to inspect or has had it fitted so that I could do some comparisons. The OEM unit is typical BMW design over durability, much like the stupid design of the door handles that fail!
From what I now know, they crack due to high EGTs. The most common reasons are -
Towing 1t or more (the previous owner of my car towed a 2t powered trailer.. Discovered that after the purchase!)
Rechipped/Reflashed or fuel delivery upped to increase power without attending to the increased exhaust gas flow, and subsequent EGT increase.
BTW, love the Lemans blue.
Cheers, Dan.
Last edited by DanX5d; 07-27-2013 at 03:29 AM.
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07-27-2013, 02:24 AM
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