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possible stripped head holes

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

nthnnxn
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nthnnxn

possible stripped head holes

Post by nthnnxn » Tue Dec 29, 2015 4:50 pm

Ok... So I've been chasing all kinds of oil leaks and I am down to 3 possible stripped head bolt holes (10mm), causing oil to pool up on top of the head. Confirmed the bolts are not the problem, but rather the holes inside soft metal head. I took 3 bolts from already known good holes and well torqued bolts, and then moved them to the known bad holes. The 3 bolts from the known bad holes torqued down well in the known good holes.
The 3 BAD holes are the 3 holes closest to the exhaust cam crank. I have tried putting sealant under the head of the 3 bolts...but they still leak. Is there a trick for the sealant thing to work? Should I take the head off for a helicoil, or have it done with the head still on? Is it possible the holes are NOT stripped and just simply need to be Removed and replaced?

Thanks in Advance!!

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