I am going to attach my S/C bracket and remembered that the fan bracket was not able to be tightened completely due to some thread damage done by P.O. I used locktite and that was fine for the fan, but with the kind of weight and force with the S/C I am concerned. What is the best way to address this issue, maybe stronger locktite it's not striped but on the edge. I rather not Tap it and if I do what size should I go to it's 8 MM now.
Thanks

 

Helicoil.


(Oh crap... that reminds me. I owe Big Dave some $$ for picking up mine. Shhh. Don't tell him )

 

If you can't chase out the threads which is sounds like you can't, you need to reinforce with a helicoil as Andrew said. The kits come in different sizes, you should be able to *carefully* drill it out and put the helicoil in that is the same size so it comes down to the original thread size.

Anyone with first hand experience please correct me if I'm wrong, I've only read about them myself.

Threadlocker is going to take you down a one-way dead end street.

 

Yep. Drill the hole to the specified size. Tap with the included tap (you'll want a T handle if you don't have one. Insert helicoil(s) and trim any excess. Install bolt w/o locktite.

The bitch is finding the right size helicoil, and drilling straight.

 

You could just replace the water pump.

 

Does anyone remember the torque of these bolts?

 

NutZert / thread.

 

Helicoils are old school. There are much better thread repair inserts on the market these days.

The one on the bottom right of this picture is the best IMHO.

 

Ummm .... and how is this picture supposed to be useful?

 

I think the "Timesert" insert is the current recommendation. Kits are available from your local industrial fastener store. I think Fastenal stores carry them, for instance.

 

NutZert could not find this post!

 

Is this correct?

M-6 10 NM =7.3 foot pounds

M-8 22 NM =16 foot pounds

M-10 45 NM =33 foot pounds

 

Don’t use a torque wrench on a 6mm bolt, if it’s out of calibration it will easily snap it.

 

Yep... sounds right. Just be sure not to mistake an M10 bolt with a bolt that takes a 10mm socket. I did that once.

10mm socket usually = M6
13mm socket usually = M8
Not sure on the M10, I think it usualy take a 17mm or 19mm socket.

 

Since you will have to drill and tap for an insert (regardless of the brand) might as well just do this for the one size up bolt and just enlarge the SC bracket hole. Is there a reason why you must stay with the original bolt size?