310R head leak question

[tito450r]

Hello guys I have a CT310 kit. When I started my engine It is in neutral withuot accelerating ok but then it got a rare sound like if it got coolant on the top of the piston. I got out the orings to check them and they were ok. Should I use anything more besides the oring to seal the head as any silicone or something???? Or how to solve tis problem ??

[C-LEIGH RACING]

This CT cylinder, it a new one or a used one you bought from somebody.
If its a used one & has some wear on the top of the cylinder from where the head was bolted on, the cylinder top may need lightly machining.
Sometimes after a good amount of use on those cylinders, the head dome will wear down into the cylinder just a bit & could at times cause it the draw coolant into the cylinder bore.

With o rings being used as a head gasket, you shouldnt need to apply any sealant, but if you want to you could apply a lite coat, just allow enough a day or so time for the sealant to cure out before adding any coolant or running the engine.
Neil