Previous owner did some work and now I'm feeling the repercussions. I changed out the water pump and I accidentally cracked the timing chain cover. After we got that off, we found that a bolt had been broke off in the block, drilled/tapped, and at some point the ear of the hole had cracked too. Now I need to reinstall the timing cover but one of the holes doesn't have anything for the threads to catch.
This is on a 1995 F150 with a 302. I'm open to suggestions/ideas.
Are you saying a chunk of the block is broke off?
Might need a machinist to fix. Without seeing it if it were me I'd weld a nut on the block - fill missing area with welder - grind it down flat smooth to make a sealing surface. No real pressure or precision mechanics happening on a timing cover
I had the upper bolt hole problem . I used a cobalt drill bit and drilled into the water jacket in the block. Tapped a 5/16-18 thread and used 5/16-18 threaded rod washers and nuts w/sealant. It has been on my engine for 5 years . This is not an easy fix. The drilled & tapped the hole must be straight or it will not go through the cover and water pump. I have saved some blocks and Harley Davidson engine cases over the years. As Bakos said, You Might need a machinist to fix it ,if your not sure you can do it get someone that has experiance
Are talking about the bolt hole on the right upper side that goes through the water pump/timing cover then into block just below the cyl. head ??
Please post photo so I can see if you have the same issue I had
Yes, it's on the right hand side but it's the lower/inner bolt, not the upper side. This bolt does go through the water pump and timing cover as well.
Yes, I saw that. As I said ,this is not easy. I start with a small pilot hole and make sure the hole is straight as I go up to the final drill/tap size. You have a tough one here guy. The ear of the bolt hole is broken off and it is best left to someone who has done similar issues before. Even, I would tell you I would do my best to save your block, But with this problem there's no guarantee
Tack weld a stud onto the block - put cover on and make sure it's straight - then tack some more - put cover on and make sure it's straight - then weld it - make sure all welding is inside and lower then mounting surface. Once again seems like ultra precision and super strength is not critical factor
Just a thought - if it sounds hokey just disregard
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