Quote:
Originally Posted by STS Tom  A.J. Math looks good. I'll check later with pencil and paper.. So what do I do for lube/sealant after I cut the precoated portion of the bolt off ?
On VW water boxers head nuts, I have used a pipe joint compound with Teflon. On the VW the coolant comes up the stud and rusts the cap nut to the stud. Years later attempted removal, breaks the stud.
Is there any equivalent coating for the original coating on the head bolts ?
On the used bolts it looks like installing them smears the coating up the bolt.
From what I understand the coating has micro spheres of thread lock and must be torqued within something like 30 minutes after being run into a hole.
Also does GM use coatings on the head bolts that go into iron blocks ? The cut-down bolts will be going into a steel threaded hole with the inserts. I wonder if the coating is there originally to prevent galvanic corrosion between the steel bolt and aluminum block.
Regards
STS Tom Sr. |
The thread pitch is 2.0
So I counted the thread and you will sill have some of the blue stuff. T would think putting blue loctite on the bolt would work. Not really sure I have never done this. THESE BOLTS ARE VERY STRECHY! When torquing you turn them 60° and the turn back about 5°
It was a little tricky