Re: Pulling heads - Saab Sonett Bulletin Board - Saabnet.com
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I finally got the driver's side loose. Will work on the passenger's side tomorrow. So far so good...the pistons look fine. I don't think it's rings either because the oil looks perfect. I had rings go bad on an old Plymouth once and the blow-by was so bad it turned the oil black in a couple hundred miles. It also soaked the air cleaner via the PCV to the point that the paper worked loose and got sucked down the carburetor. That was not a good day. The Sonett shows no signs of anything like that.
The head gasket showed no obvious gaps, but that doesn't mean there isn't a tiny one somewhere. I think the problem is the valves...somehow. I don't have them out yet but I'll post some pics when I can, just to see what you think. I also understand from Dick that valve lash can cause some compression problems, but the tops of the valves look nice and square - no mushrooming or obvious, undue wear.
Will post again tomorrow. Thanks as always Eric!
"The sky's the limit, this time I'm switching to glide."
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