Most recent update. Quote from Sean below. I feel bad because Sean runs a good honest shop.....so he's taking all this on the chin (as far as absorbing additional expenses). His update below."the pistons will have to replaced because they’ve compressed at the rings and the rings are now tighter in the pistons. So, once they’ve honed the cylinders and determined the bore, I’ll be ordering pistons, rings and new bearings.As you can imagine, all this is not good news. I asked Mark (the owner) if he had any ideas about how all this occurred. He said it looks like it probably pushed some water into the cylinders at some point while running when the head gasket let go and it also has signs of detonation, which didn’t make sensor to me at first since there’s no sign of it on the plugs and the AF ratio’s were in line.Based on something Mark mentioned and I remembered from earlier, I think I’m going to have to look into your camshaft specification. Do you know anything about the cam or do you have the cam card? Mark had said the cam can make a big difference in cylinder pressures (which I know from NA motor testing), and that it could be too high when coupled with forced induction. Could make sense on both why the head gaskets blew and why this engine made significantly more power than any other at a relatively modest boost level. If this line of thinking (the line of thinking that’s trying to determine how this chain of events occurred) comes to some conclusion that allows us to say cylinder pressure lead to possible detonation and ultimate gasket failure / liner drop, I think we should change the cam, or drop the boost level.I’m looking forward to getting past all this so that I can ultimately get back to doing what I do on these, which is tune. I’ve only got about an hour in on that job"
