RESOLVED - Stripped out the cylinder head bolt hole while replacing valve cover, what now?

petethepug · Mar 1, 2022

Nice. Timesert has everything you need to do the job (in one package) so you're not tempted to use a bit that's toasted. You pay more for it, but I consider a job done right the first time only has to be done once. Treat yourself to a drill specific for the job in size and smooth variable speed.

I'd be willing to bet you walked into someone else's handywork and handled it with the least amount of grief and energy.

07Burb · Mar 1, 2022

bdbull said:
Doing some more work and one of the other bolt holes stripped out so I guess I'll get my chance to learn now to do it. I've been doing some research and people seem to like Timeserts or Keenserts more than Helicoils.

Do you have the proper torque spec? Seems kinda odd that you'd have stripped out 3 bolts now using a torque wrench. If using the torque specs given by the manufacturer that "shoundn't" happen. Seems super odd for sure!

Geotrash · Mar 1, 2022

07Burb said:
Do you have the proper torque spec? Seems kinda odd that you'd have stripped out 3 bolts now using a torque wrench. If using the torque specs given by the manufacturer that "shoundn't" happen. Seems super odd for sure!

+1. Or you have a torque wrench that's way out of calibration.

89Suburban · Mar 1, 2022

drakon543 said:
most helicoil kits are designed to have a bite after they are actually inserted. there's a few different versions from a typical spring style look to a full thread insert. i have never used any type of loctite on a helicoil as the normal type has a chance of the loctite getting on the inside and causing you an issue reinstalling the bolt. the thread insert style has tabs you use thier special tool or a hammer and a punch to push into the metal to lock them in place. drilling in a sensitive area as inside the head like that should be drilled slow with a second person with a shopvac sucking the drillings up as the come off. you can also use a clear cup of some kind and drill through cup into the piece to contain the shavings if your by yourself. if your drilling steel in a sensitive spot i use the same thing with magnets glued inside the plastic cup. working facyory maintenance for a while now myself and you have to be the shop and come up with some nifty home made accessories.

donjetman said:
Put wheel bearing grease around the tip of the drill bit to catch the shavings.

Great tips!

bdbull · Mar 1, 2022

Geotrash said:
+1. Or you have a torque wrench that's way out of calibration.

Trying to torque it to 106 inch pounds. The hole that stripped today was fine last week.

SNES Avalanche · Mar 4, 2022

bdbull said:
Trying to torque it to 106 inch pounds. The hole that stripped today was fine last week.

Are you using a ratchet reducer?

bdbull · Mar 4, 2022

SNES Avalanche said:
Are you using a ratchet reducer?

Nope. Just straight 1/4" torque wrench and socket. The shop that fixed it said I probably was victim of somebody else's work. Not sure how they would know that unless they just draw that conclusion from experience. We'll see what happens when I put the other valve cover back on after I (hopefully) fix the stuck lifter.

Trey Hardy · May 27, 2022

bdbull said:
Nope. Just straight 1/4" torque wrench and socket. The shop that fixed it said I probably was victim of somebody else's work. Not sure how they would know that unless they just draw that conclusion from experience. We'll see what happens when I put the other valve cover back on after I (hopefully) fix the stuck lifter.

Shoot me a text buddy 252-240-9218

RESOLVED - Stripped out the cylinder head bolt hole while replacing valve cover, what now?

petethepug

Michael

07Burb

GM fan for life

Geotrash

Dave

89Suburban

Bull in the china shop

bdbull

Full Access Member

SNES Avalanche

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bdbull

Full Access Member

Trey Hardy

8” fabtech icon coilovers uniballs 24x14on35/15.50

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