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cam journal cap repair

dardoonk

Forum Mentor
I need to repair one of the threads for the bolts that hold the cams in place.... No idea what it is actually called.........cam holder studs, maybe??

Anyway, is it okay to use a heli-coil on these? Will they hold up?

Thanks...
 
Helicoil is the proper fix. You have any other ideas?
 
Helicoil is the proper fix. You have any other ideas?

Helicoil repair is fine.

I had one stripped out on my 850 by a PO. Rather than helicoil, I opted to fit a longer bolt that went deeper into the undamaged thread. You must make sure that you don't bottom out the longer bolt though. Easy to check the thread depth in the head. One other thing, make sure you get the correct tensile strength replacement bolt, and don't over tighten them!!!

If you need to repair two or more on the same cap, I would definitely go the helicoil route.
 
Thanks guys.. I figured a Heli-coil would do, but I thought I might use a Time Sert, but the starter kit for them is about $60.

If a Heli coil works fine, then that's what I'll go with
 
Thanks guys.. I figured a Heli-coil would do, but I thought I might use a Time Sert, but the starter kit for them is about $60.

If a Heli coil works fine, then that's what I'll go with
I would go with a TimeSert in any bolt that would regularly, or fairly often, be removed, like a spark plug, header bolt, something like that, or where there is a posibility of metal shavings ending up in a place where they need not be, such as your crank. When installed correctly, they're just as permanent as machined threads. When helicoiling a spark plug hole its "recommended" that you remove the head to prevent this. On a car, thats usually NOT an option for me, which is another reason i go with TimeSerts, as they dont produce nearly as many shavings, although there are still SOME. A helicoil would be the best route IMO on what you're doing simply because it would rarely be removed. Ive used both, and helicoils bother me on spark plugs and such because they can have a tendency to come out with the bolt or plug when its removed over and over. Ive used timeserts on spark plug holes on cars with alu heads and they work FANTASTIC. I can only assume they'd do the same on a bike. But, I agree with everyone else, in this situation, a helicoil is the way to go.
 
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