Maintenance & Technical > KX500 Original

Fixing problems with new (old) bike. - Running

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MeanGreenMachine:
I think that US Chrome (or the previous owner) actually countersunk the stud holes. The top surface was lapped flat and everything, too. It's still possible that they pulled up, and it's possible that the one stud (and possibly others) that had weak threads decided to creep. I will probably pull the head and jug and helicoil the rest of the head stud holes on the mill just to be sure, counter sink again, and replace base and head gasket.

Anybody have recommendations for head and base gaskets? Cometic? OEM? I used an OEM base gasket but it looks like it may be leaking a tiny bit/collecting dirt. Maybe not, but the talk of sucking base gaskets scares me, so I want to put the best in while I can.

I was running the Wiseco HG that came with the top end kit, but it's not really top quality. It's a bit thicker than the steel gasket that came out - I'm trying to avoid having to mix in race gas and stick with CA 91 if at all possible. I don't need max power, just max reliability since it's going to be a desert bike used far from home.

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