Fuel leaks around HEAD when running.

[AIR_RAM]

I seamed to have developed a leak that I'm unable to fix. I think its because the head button may be "Tweaked" but I'm not sure... The shims appear to be in good shape an intact. But no matter how easily and evenly I tighten the head screws it still "BUBBLES" fuel out from between the head and the engine when running.

So... Do I need a NEW head button? Heat sink? Shims? All the above? I saw a real nice heat sink that appears to be a "ONE PIECE" with the head button as part of it.... rather then the two piece I have now.

Thanks for the help a"HEAD" or time...LOL

SPEED SAFE, AIR RAM

 

[X]

can you see if its coming between the button and the head or the button and the engine? You might get away with sealing it.

 

[Larsenracing]

I think I would try the new head button and would also relace the shims at the same time. I have also seen this happen when to much ARO is placed into the engine and pulled as it then forced the oil/fuel threw the bead button due to the compression, basicly the same thing as a head gasket leaking on a 4 stroke.

 

[AIR_RAM]

It seems their are 2 types of 4.6 cooling heads.

There is a TWO PIECE head for the SAVAGE X RTR 4.6 (uses a two piece HEAD BUTTON/COOLING HEAT SINK)

And a different ONE PIECE head for the SAVAGE X SS (has a one piece COOLING HEAD)

Does ANYONE know if they are they interchangeable?

Are they the same engine with different cooling heads?

SPEED SAFE, AIR RAM