M42club.com - Home of the BMW E30/E36 318i/iS

DISCUSSION => Engine + Driveline => Topic started by: DipStick on October 27, 2007, 01:39:48 PM

Title: Common Block & Head Failure Points
Post by: DipStick on October 27, 2007, 01:39:48 PM

Just tore down an overheated m42 out of my junk-yard car.  The HG was blown, and I was really expecting to see either the block or the head cracked, but I cannot find anything.  Are there particular areas where this head and block tend to crack due to overheating?  Any insight will be appreciated!

Paul

Title: Common Block & Head Failure Points
Post by: D. Clay on October 27, 2007, 02:01:54 PM

Obvious place is usually around exhaust ports.
Thread on cylinder cracks:
http://www.m42club.com/forums/showthread.php?t=3427&highlight=head

Title: Common Block & Head Failure Points
Post by: Shocker on October 28, 2007, 12:06:19 AM

The head might have just warped and not cracked.