Quote:
Originally Posted by Bio300TDTdriver
Let me be the first to welcome you to the 603 cracked head club.  It sure sounds like the same symptoms I had.
Can you please elaborate on the cracked 20 and 22 head that you replaced. Were they overheated? Where were the cracks?
Chris |
That is a club I don't really want to join, thanks.
Thanks for asking about the cracked heads I have experienced...
They were both showing signs of compression loss and combustion pressure in the cooling system. The engine ran rough, blew steam out the exhaust pipe and nearly blew the top radiator hose off...
The heads were cracked in the combustion chamber between the exhaust valve seat and the prechamber bore. One was in cylinder 2, and the other in cylinder 5. I was able to find a guy in Tennessee who welded the number 2 cylinder crack, and that head went back on a 350SD engine and still runs fine (last I heard).
To tell you the truth, I don't remember the casting number on my head. l'll check next week and report back here. Fortunately, there is a good source for OM603 parts in my area- just in case the head IS bad :<(
...More to follow,
Kevin