Well I finally did it. Too many removals, replacements, and ham-fisted torqueings on my part. I stripped out the left rear hole for the exhaust manifold bolt. I’m still using stock cast iron exhaust manifolds so using those long bolts into the head.
I’m wondering if a longer bolt might find enough threads ?
Probably not a good thing to try.
I could drill out to the next size and use a larger bolt.
Don’t like having one different than all the others though.
Can the hole be drilled deeper without hitting a water jacket or something ?
Probably not a good idea either.
So there’s the Helicoil insert. Probably the best choice, but is there a better alternative ? Seems I remember reading about another type of insert recommended for Porsches that was stronger than a Helicoil. Any of you guys know about that one ?
Any recommendations welcome.
Thanks,
Merril
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I'd be interested to see how the helicoil used, are they strong enough for the cam "cap" bolts. I noticed a hairline crack in my cam/tappet cover at the middle off the exhaust side cam and one of the bloody cam cap bolts has been stripped, well i can't get enough torque on it I assume this led to slight movement, enough to crack the cam cover slightly before i pulled the motor......
anyway be interested to see how this is all done!
anyway be interested to see how this is all done!
Matt I used Helicoils on 3 of the 5 cylinder head bolts on an old 400cc Yamaha motorcycle I own.That was 10 years ago and they are holding up just fine.That was before I learnt about the importance of using a torque wrench when working with aluminium
1986-GTV6
1989-75 Twinspark very sadly sold-remarkable sedan !
2014 Audi Q5 3.0l TDI - torque MONSTER
1989-75 Twinspark very sadly sold-remarkable sedan !
2014 Audi Q5 3.0l TDI - torque MONSTER
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- Posts: 166
- Joined: Wed Dec 29, 2004 5:55 pm
- Location: Marysville, WA. USA