I have a couple L20b questions:
I was just gifted a l20b head that had the #s filed off or didn't have them in the first place.
The numbers around the timing inspection plate say #70 and 12-23 other than that it looks simular to a U67.
Also on this head of mine, it has a Crane cam with the numbers DA 2722 10 C and 62 5 below.Does anybody know anything about Crane #s and what it is that I have?
Last one, this engine was locked up and I've had it for 20 yrs. I finally have a project 620 and decided to open it (l20b) up to see what I've got. The front cyl was rusty; perhaps this engine blew a head gasket. The rust in the cyl is enough to bore out instead of just hone. Any idea how many thousands can be removed while still useing oversized rings?
I'm going to call the machine shop on Monday but was just trying to plan ahead.