I have the big sucker 1 air cleaner, for some reason the breather bolt always comes loose, I have try medium strength blue loctite but It didn't hold, it comes loose after 2-3 weeks. I was going to use red loctite but worry about breaking them next removal, I have seen people breaking them if they are over tightened. Any idea? What do you use for hot engine components? Thanks Alex

 

Maybe a dumb question but, are you torquing the bolts to the proper tension? That and blue Loctite should work. Also, adding a star or split lock waxher would help it they are not there already.

 

Of course I did
Clean the threads, apply blue loctite and torque. It's funny though, always the back bolt comes loose, not the front bolt. I just did a research, the blue will take up to 300F, it should be fine.

 

I replaced all the allen bolts on both sides of the motor.I used the blue locktite.I torqued them all to the specs and have had no problems.I checked them all twice since and all is well.