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Hi All,
Anyone know what the tightening torques are for the cam carrier to cylinder head allen bolts and the cam cap torques? For an S50 engine.
Cheers, J

I quite agree, which is why I've no intention of approaching BMW for a cam failure in a 16 year old car! The only comment I'd tend to disagree with is that the camshaft is one of the last components I'd expect to fail due to high rev abuse - the bottom end is going to fail way before. In my case the...

Is worth a long shot to speak/write to BMW about a manufacturing fault causing al this damage to see if they might help in some way? Sadly, my experience of dealing with BMW service is entirely negative, they seem to be in utter denial when it comes to accepting that they can make engineering desig...

Actually almost nothing on the magnetic sump plug. Will be flushing it through regardless. The only debris was still in the cambox. The problem I've come across at the moment is removing the inlet cam's hub. The Beisan Systems website suggests that once unbolted it should come away by lifting forwar...

Everything looks fine, I took the broken segment off the engine yesterday and the wear was what I would have expected from a 72k mile engine (none!). Sadly No.5 cylinders exhaust valves are definitely bent so it's got to be a complete top end overhaul. With no evidence to the contrary it looks like ...

Anyone got any recommendations as to where to buy a head gasket set from?

Z3M cam failure.jpg .... and behold, exhaust cam snapped half way across no. 1 cylinder valves. I've never heard of a S50 or S54 cam snapping before. Had hoped that the valves had survived but after slowly rotating the snapped segment of the cam it's pretty clear that the number 5 exhaust valves ar...

Diagnostics show nothing relevant to this problem. Back to the spanners!

Forgot to say, other than the irritating lumpy idle, the car was running great before hand without any unusual noises. I'm sure that this is a cam issue. Not sure it'll help but I'll hook up the diagnostics in the morning to see if there's a clue there.

I was driving at about thirty mph this morning when there was a metallicrattle (sounded like a chain failing?) from the engine then the engine lost all power and stopped. Cranking it over gave a very off beat sound and no attempt to start. Checking the camchain through the oil filler I can see it mo...