Quote:
Originally Posted by GregorFuk
I think Chad was referring to what looks like porting work on the inlet side of the head. I read something a long time ago that CSL heads were given some hand finishing (A bit like Honda Type-R engines back in the day). I don't know how true it is though and I've never seen a normal M3 head side by side with a CSL head. Would be interested to know.
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You are correct, i did not read correctly.
Yes CSL had ported/polished inlet side to match the better designed inlet valves. Exhaust side is as far as i am concered the same as normal m3.
Quote:
Originally Posted by Chad
Hi Julian, this is a bit of fun for me, more research and practice run than anything else, for when I do my motor, this is a spare engine we have from my lads car, he bought new motor from BMW , as this one previously spun a shell , but it all looks not to bad considering it did 100k , will be doing a few practice rebuilds with this one  |
I am very jealous of your project and i have much respect for you rebuilding the engine
To be honest i am not very surprised that it spun a bearing shell. They should be replaced every 60k miles, if its been driven like its meant to be, in my opinion.