Long bolt primary thread repair

[FLDavetrain]

Finishing up a fat clutch rod install and of course the last primary cover long bolt stripped out the threads. I have a 1/4 20 helicoil kit but not sure if they're right for this hole, would appreciate some advice on best repair product/set up. Don't want to screw up the case. Thanks

[Scotty]

Three page thread on here that cover that problem
https://harleytechtalk.com/htt/index.php/topic,58472.0.html

[chipthedonkey]

Or to just answer the question here, yeah, you can use a helicoil insert there.  Time Sert is an option too.  Though on the smaller hole like that I'd go helicoil.  It's a relatively common thing; especially if you're regularly maintaining / tinkering with the bike.

[FLDavetrain]

Should the insert be a certain length?

[smoserx1]

Ideally it should be the length that the bolt threads go into the case, or so I would think.  See if you can measure how deep it goes in

[Ohio HD]

Bolt length minus primary cover and inner thickness equals depth of helicoil.

[FLDavetrain]

Bolt length minus primary cover and inner thickness equals depth of helicoil.

Needs room to break off the tab thing as I remember so not sure insert should be entire hole depth. Generally was hoping for a direct answer like 1D, 1.5D, 2D length but no worries I've made the decision guys, carry on helping other fellow bikers

[Ohio HD]

Bolt length minus primary cover and inner thickness equals depth of helicoil.

Needs room to break off the tab thing as I remember so not sure insert should be entire hole depth. Generally was hoping for a direct answer like 1D, 1.5D, 2D length but no worries I've made the decision guys, carry on helping other fellow bikers

If you check the case, I'm sure you'll see the depth of the hole is deeper than the fastener will use.....