25-03-2021, 11:14 PM
When I removed the dynamo housing to get at the front block to crankcase nut I discovered the thread for the long bolt going into the crankcase was stripped. Because it would be almost impossible to helicoil without swarf getting into the crankcase I decided to try the Locktite option. As the thread had been stripped for some time and the joint was not leaking I reasoned I might be able to gett away with only light torque on the bolt. The Loctite Thread Repair is not available in OZ. So I obtained some Locktite LB8801 Silicone Lubricant and JB Weld (not the quick set version) then set about experimenting with a nut with the thread drilled out and a bolt. I found I could produce a reasonable thread in the nut and tested it to destruction. It took nothing like real thread torque but because there was no leak with a stripped crankcase thread before I might be able to get away with this type of solution. I used Permatex Seal a Gasket on the joint and ressembled only using fairly light torque on the offending bolt. To date all is well. I would certainly give it a go with a sump plug and in your case you still have some of the original thread available.