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YOUR RESEARCHHELP NEEDED!!
Leading reported evidence
Use same size bolt afterwards and by
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The beauty of using helicoil for repairs is that you ended up using the same size bolt afterwards and by using a bit of Locktite the coils will never let go and your fasteners threading into it will be as good and new.
Leading evidence: 'Use same size bolt afterwards and by' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair anything' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
However repairing anything on the bench with a vise is different from working under the car on your back.
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Suggestion
As in any repair, especially things we have never done before, go slow and stop when you have any doubts.
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Suggestion
Loctite also makes a thread repair kit that could work; I've never used it, but seems feasible.
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Suggestion
I suggest all DIYers get a set because sooner or later you'll need it.
The beauty of using helicoil for repairs is that you ended up using the same size bolt afterwards and by using a bit of Locktite the coils will never let go and your fasteners threading into it will be as good and new.
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Thanks, I may have to resort to that but was hoping I didn't have to pull it all apart again.
I spent all day doing this and the water pump... What a pain!
Might be worth taking a run at it with a thread chasing tap (different than a regular tap) of the original size first. You could wind up sufficiently reforming the threads for a solid hold.
Sounds like you're down to going to a larger size or using, as henry suggests, a time-sert or helicoil. Loctite also makes a thread repair kit that could work; I've never used it, but seems feasible.
Use the helicoil. It takes about 10 minutes to make the repair and its the correct fix. U should be able to do it by just pulling the t-stat and thats pretty easy to do. Im guessing with no lift its a sub 2hr fix.
Should be on the shelf as a kit at your local autoparts store but u r on an island so who knows. Make sure u get the correct size drill bit if the kit doesnt come with it. Also Fastenal stores stock the kits if u have one close enough u that u dont have to jump in a boat
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I ordered the kit above from Amazon just to have all the different sizes. But, I can't wait and will be calling NAPA when they open.
My next question is, are the metal gaskets a one time use or can I use this new one installed again?
Or, can I leave the stat on and insert the Heli coil? If The bolt holes in the T-stat are big enough I think for the drill bit (1/4") and coil.
Using helicoil is easy. However repairing anything on the bench with a vise is different from working under the car on your back. Jack the car up and try to place jacks with plenty of room for manuevouring under the car. You want the ability of drill into the stripped bolt as straight as possible. There is no room for redoing, Work and drill slowly with the appropriate size drill bit. Use plenty of lubricant on the drill bit. As in any repair, especially things we have never done before, go slow and stop when you have any doubts. Do it once and do it right because there is no chance of redoing it. The beauty of using helicoil for repairs is that you ended up using the same size bolt afterwards and by using a bit of Locktite the coils will never let go and your fasteners threading into it will be as good and new. Good luck and let us know how it goes.
Not sure in the gasket but if it were me i would pull the tstat. U have to oversize the original bolt hole then tread it. Then the helicoil is threaded in. Doubt u can do that through the housing. Also stuff a rag in or tape the motor to prevent chips from entering the coolant jacket.
All done. Just letting the locktite set up on the coil.
I do have one longer bolt and I'm wondering if that should have been the one on the bottom rear that stripped. I was sure to place them in the new t-stat but maybe I missed.
Anyone have info on this before I wrap it up?
Great !! Helicoil saved my *** more than once and that kit from Amazon has the most common sizes. I suggest all DIYers get a set because sooner or later you'll need it.
Bill, The water pump has both M6 x 25 and 30 length bolts. If you have a longer one left over from t-stat, you probably mixed one of the pump bolts up with the t-stat?
Not me but maybe the previous owner. I made a cardboard template for the WP bolts and there where 2 longer bolts. The T-stat also had one longer so I used that in the only spot that had a hole going all the way through. The others bottom out in the block.
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