BMW: 525i Cylinder Head Replacement

"Sandjicpl" <com> wrote 
Pressure 
Bentley 
these 
the 
caused 
for 

It would be helpful to know what year and/or motor it is. I'd guess it's
an M20 (from the comments about valve tappet noise), but it makes
a lot of difference if it's a 2.7 eta or 2.5i. A whole lot of difference if
it's an M50.

Floyd

Hi Floyd, I think you were the one that suggested that it might be the head
itself vs. the gasket. You were right on! There was a crack when we sent it
out for testing. Good thing we did that as we were ready to put the old head
back on and call it a day. It is a 1990 525i with the M20 engine. We are
wondering how the heck the head cracked when we didn't originally have a leak
that caused the engine to get hot. It seems that the head cracked causing
extra pressure in the system and then blowing out the drain screw at the bottom
of the radiator. Looking forward to your comments.

In article <aol.com>,
Sandjicpl <com> wrote: 

Blue smoke is oil
Black smoke is fuel
White smoke is coolant

Did you change the cam? If the valves are adjusted properly and
it's way noisy it could well be a worn cam.




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