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#1 |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Head Gasket mishap, need opinion
I'm working on my tbi 350 after a blown head gasket. I chased all of the threads in the block and put on the new head gasket. I set on the head and started putting in the new head bolts. I get through the first two torque passes and on the third pass, one of the bolts starts spinning. Basically I stripped the threads in the block some how.
So I figure my only option is to helicoil the block. My question is, do I need a new head gasket? I don't know if it being torqued down will effect it sealing up once I get the threads fixed. |
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#2 |
Registered User
Join Date: Aug 2009
Location: St. Paul MN.
Posts: 1,996
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Re: Head Gasket mishap, need opinion
I would replace the head gasket it is not worth doing the job another time.
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#3 |
I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,993
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Re: Head Gasket mishap, need opinion
I agree^^
I will ask,did you use a tap to chase the threads?The reason I bring it up is that a tap will recut the threads when used to clean them.It isn't much of a cut(usually) but it can be enough to weaken the threads.A thread cleaner is a much better tool to use.They look like a tap with only 2 flutes and generally wont cut the threads.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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#4 |
Registered User
Join Date: Dec 2011
Location: Creighton Sask. Canada
Posts: 4,121
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Re: Head Gasket mishap, need opinion
How is the bolt threads, maybe bolt is screwed up. The head gasket will be fine no heat cycle yet. But sounds like a Helicoil is in order, no fun.
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#5 | |
Senior Member
Join Date: Aug 2002
Location: Valley Center KS
Posts: 3,525
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Re: Head Gasket mishap, need opinion
Quote:
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#6 | |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Head Gasket mishap, need opinion
Quote:
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#7 |
Registered User
![]() Join Date: Sep 2004
Location: Topeka, Ks
Posts: 604
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Re: Head Gasket mishap, need opinion
Man I think that truck hates you. I would agree it would probably be best to just buy another head gasket. Sure enough the sob would leak again on ya.
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Daily-94 K2500 350 5spd extended cab longbox Project Red Velvet-68 C20 396-th400-AC-PS-PB-all original except for the 8 track and the gun rack. Build thread>>>>http://67-72chevytrucks.com/vboard/s...d.php?t=495881 My 01 TA and 88 Formula hide in the garage. :-) |
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