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Um probably red..... Stud and bearing mount.. I don't know if there are more than one red as in liquid.. I know many tubes are red in color.. They have a number on the tube, and I would have a look and at the card the stuff comes in.
A dental pick might help to get the left over bolt threads out, and by all means save the original threads if you can.....
You said large hole and I took it as Moon Crater. I have seen this sort of thing a lot on Air Cooled VW engine at the exhaust studs... And the craters there were mapable.....
I am unaware of any 6mm insert, but I see no reason why there is not such a thing, and if it will line up with in reason use it.
Just be sure the pump lines up before you add gaskets and goo..... You can alter the bolt hole some what for any angle the bolt is not forced to be on, if not dead straight.
Once you know it will work, and make a final install, I would put a dab of anti seize on that bolt for sure. You don't need it to seize to the insert. Another failed bolt here and your gonna be in deeper kimshee than you are now.. But you know that, and don't need me to tell ya..
I think those bolts are torqued to 10 ft lbs and maybe 8, and so are over snugged very easy as you found out. You might consider a better grade bolt as well, with the idea it will be harder to shear.
Kinda almost like having a tiny boat eh? Just a hole to pour $$$ into huh?
I have been checking each day to see if you replied, and am interested in doing so to see how things turn out. I am a x tech, and so have forgotten much in time. I came seeking certain info, and find this place a great help, and hope to be a help when I can... So I wish you and your bolt hole well, and hope you have it fixed soon... Mac
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