Reply To: Overheating Traction 11B

[BernieParticipant]

I would suspect the head gasket is not sealing and therefore allowing combustion gasses to escape aross the gasket faces and pressurise the water ways.

I assume it was not overheating before the pistons and liners were changed and a new head gasket was correctly fitted and torqued down.

If so, and nothing else has been changed, I would suspect iicorrect liner stand-off.

Did you verify the liner stand-off height?  If the liners do not protrude above the block surface as specified they cannot “dig into” the gasket to create the necessary load and the seal around the bores will be lost.

A compression test should reveal which, if not all, bores are failing.  The solution will be to remove the head and check the liner heights above the block face.  If that is the problem, correction will require liner removal and insertion of suitable thickness seals under each one to achieve the correct liner protrusion.  Then reassemble with a new head gasket.

B…….