oldschoolvolvo
Well-known member
- Joined
- Mar 27, 2004
- Location
- Lancaster, PA
(Cross posted from my project thread, figured I might get some more feedback here)
http://forums.tbforums.com/showpost.php?p=5880257&postcount=169
Car: 1979 242 (B21F) 220k miles
Hit a bit of a snag in my headgasket repair.
I rounded one of the rear head bolts trying to loosen it...
All the others came out without too much drama.
What is the best course of action here? Drill off bolt head, remove cylinder head, soak offending bolt with PB Blaster and attempt bolt removal with a pipe wrench?
Also, if one of the head bolts came out like this, what are the chances of it not stripping the threads in the block when reinstalling? (upper half of the threads are filled with rust)
*Edit...maybe answered my own question...~1x nominal diameter of threads is max strength.
ref: https://www.fastenal.com/en/78/screw-thread-design
So in my case, the upper threads aren't taking much of the load at all.
http://forums.tbforums.com/showpost.php?p=5880257&postcount=169
Car: 1979 242 (B21F) 220k miles
Hit a bit of a snag in my headgasket repair.
I rounded one of the rear head bolts trying to loosen it...
All the others came out without too much drama.
What is the best course of action here? Drill off bolt head, remove cylinder head, soak offending bolt with PB Blaster and attempt bolt removal with a pipe wrench?
Also, if one of the head bolts came out like this, what are the chances of it not stripping the threads in the block when reinstalling? (upper half of the threads are filled with rust)
*Edit...maybe answered my own question...~1x nominal diameter of threads is max strength.
ref: https://www.fastenal.com/en/78/screw-thread-design
So in my case, the upper threads aren't taking much of the load at all.