I don't know what type of helicoil you are using but i/my shop use these on air cooled 2 cycle and 4 strokes all the time. We install them with high temp locktite. With stihl piston and cylinder kits going for well over 300 bucks for parts alone on larger models (9000 plus rpms) these save the customers from a major repair bill. we've never had a failure. The cheap wire helicoils are a joke when it comes to anything that needs torque or has to handle dissimilar heat expansion rates.

 

I have a set of remanufactured heads, I just had them completely done. If you need a set, please let me know. They've been decked, valve stem seals done, guides checked, valves cleaned and lapped.

 

dswilly I really don’t think you want to weld the deck.

 

Yeah, maybe right. Im not a machinist but I see a lot of aluminum head repairs on the net that look worse than that. Even fancy racer car stuff.

 

I was looking JUST this product. Thank you for reaffirming my choice!!