Valve cover studs

[marcmiller001]

Apparently my valve cover studs (actually the center nuts) were cross threaded by a previous owner. I removed the studs and was planning on cleaning the threads... Any thoughts on the best way to secure them back into the head?

[Justin B.]

Either Heli-Coil or Time-Sert if there is any doubt about the integrity of the threads in the head.  Seems I remember reading (a long time ago) that some folks used a longer stud with a "jamb nut" on the back side. 

[Barry]

The original studs are a little too short to engage all of the threads in the head which is why there are so many problems with threads stripping. A longer stud is a good idea which ever solution is adopted.

[mrclubike]

I dont think his studs pulled out
I think he is saying they are damaged because the Acorn nuts were cross threaded
He wants to know how to retain the new studs in head

[marcmiller001]

Exactly! But got it done this morning. Tap and Die M8x1.25... one stud was ruined... the other cleaned up fine. Used thread lock and put it back in. Then got grade 8 m8x1.25 rod...cut it...cleaned it up and pit that in slightly longer than other... threadlocked...rechecked valves and put it all back together. Bike is coming along nicely!! I am a fuel tank and seat/subframe away from getting it on the road. If anyone wants to loan me an r65 tank... that would he super. Lol.

I dont think his studs pulled out
I think he is saying they are damaged because the Acorn nuts were cross threaded
He wants to know how to retain the new studs in head