X2

MBHD

 Originally Posted By: THE FRENCHTOWN FLYER
Did you use a ridge reamer to remove the ridge around the tops of the bores? With worn bores rings will often break if the ridge is not removed.

How are the ring grooves? If the rings are not snug in the grooves then they were probably broken as a result of ring land pound-in. Possibly caused by detonation.

The blocked hole is the heater outlet by-pass. It can be plugged if no heater is used.

12 port SDS EFI