Brian, Not that it makes any differents now ,the " H " cases were used on the type-1 in '67 (10mm nuts on oil pump) and '68-'69. The 87. 93mm jugs are after-market big bore.These were commonly called "88mm" It seemed that these "88"s ran hotter because of the very thin cly. Your engine used to be a 1641 cc. with the "88s"
Like I said before, the #4 piston showed signs of burning up before the rod let go. I bet #3 looked worse or should have. I would guess all the metal particals burning off the pistons ended up in the oil burning the rod bearings up. #4 rod always seems to be the first to go.
Melted oil cooler seals tells me that your engine was running way,way to hot for a while. If these seals melt down they can block the oil going through the cooler completly. So what happened ? Why was the engine running red hot? Wrong seals? Bad seals ? Timing wrong? Engine compartment seals gone ? Heater pipes off fan housing ? Low oil pressure ?
Scott, Why do you not like "H" cases ? Thats what your '67 came with.
They seemed to run real good when built right ,but not my first choice for a modified today. My fake WW-2 Bug will be running a "H" case. I don't have a problem with that and besides I already had the case.