If your having problems with the head gasket leaking you need to look at a couple of other critcals. Check the torque on the head bolts. Because of thermal expansion and contraction head bolts need to be retorqued. Specially on a two stroke. I have found that painting the head gasket with...
Temperatures of exhaust gas with in an engine can very greatly with RPM. Usually the temperature of the exhaust gas lieving the cylinder is 1400 to 1500 degrees F. This is more than enough heat to create heat treating characteristics, but as mentioned before the heat is quickly absorbed by the...