SOHC engine Head Crack issue, vintage posts

TomM96 · 11-07-2020, 01:42 AM

...........................
I found a few old threads concerning the cracked heads on SOHC engines.
Several of the posters are qualified Saturn techs with lots of experience.

It turns out that Saturn had determined that there were casting/metallurgical issues in the head which were also at fault.

Then, as OldNuc discovered, there was the head-torqueing issue as well.

threads:

SOHC engine Head Cracks

http://www.saturnfans.com/forums/showthread.php?t=16384

http://www.saturnfans.com/forums/showthread.php?t=21019

http://www.saturnfans.com/forums/showthread.php?t=23424

Highmile · 11-10-2020, 10:06 AM

I have a lot of respect for OldNuc and the others that made a lot of these posts however I recently posted on the SL1 rebuild thread

Heads can and do crack however I suspect most of the bad heads have long since failed. Keep your temp in check and you'll be fine. I never let my temp get above 5/8 on my gauge before I cycle the a/c to make the fan run. The miles I have speak for themselves.

Highmile
'95 SL1 718k and counting

11-07-2020, 01:42 AM	#1
TomM96 Senior Member Join Date: May 2004 Location: Long Island, NY Posts: 1,846	SOHC engine Head Crack issue, vintage posts ........................... I found a few old threads concerning the cracked heads on SOHC engines. Several of the posters are qualified Saturn techs with lots of experience. It turns out that Saturn had determined that there were casting/metallurgical issues in the head which were also at fault. Then, as OldNuc discovered, there was the head-torqueing issue as well. threads: SOHC engine Head Cracks http://www.saturnfans.com/forums/showthread.php?t=16384 http://www.saturnfans.com/forums/showthread.php?t=21019 http://www.saturnfans.com/forums/showthread.php?t=23424

11-10-2020, 10:06 AM	#2
Highmile Senior Member Join Date: Mar 2001 Location: St. Louis, Mo. Posts: 1,273 1995 SL1	Re: SOHC engine Head Crack issue, vintage posts I have a lot of respect for OldNuc and the others that made a lot of these posts however I recently posted on the SL1 rebuild thread Heads can and do crack however I suspect most of the bad heads have long since failed. Keep your temp in check and you'll be fine. I never let my temp get above 5/8 on my gauge before I cycle the a/c to make the fan run. The miles I have speak for themselves. Highmile '95 SL1 718k and counting

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