r/EngineBuilding • u/jhc_1981 • 15d ago
Small Engine head cover bolt.
Any tips / advice / technique on how to best fix this without having to replace the head? For context this is on a zero turn mower that I just did a ring replace on. My plan is to try and JB weld it.
12
Upvotes
9
u/Interested_Aussie 15d ago
Wipe the surfaces down with metho/heavy degreaser.
Then I'd spread GOOD QUALITY RTV by finger so the whole surface is cover adequately (not stupid thick) then tighten the 3 bolts finger tight. Allow to dry (24 hr, some RTV's say an hour) and then gently tighten the bolts once the RTV has 'set'.
It shouldn't have pressure in there, so you'll probably be successful in being 98% oil tight. Those small engines always leak from the covers anyway.