northeastconfederate
Cast Iron
- Joined
- Jan 25, 2005
- Location
- New Egypt, NJ
I have a couple of Harley cylinders which have been sleeved, and the base gasket surface was poorly finished. There are at least 2 "steps" on the sealing surface, fairly close to the spigot. The result is a pair of cylinders that leak profusely! Also, the head gasket surface is poorly finished. Flat, as far as I can tell, but very course finish, and the head gasket manufacturer is very specific about surface finish: They want a RA of 58, which is very smooth.
This is the third time I've had this apart, the previous two having had it back to the machinist to clean up these surfaces and make them flat, and they still aren't. So, I am now very seriously thinking about attempting to fix this on my South Bend Heavy 10. I think I remember seeing someone on here several years ago who was using his SB 9" to machine old Porsche heads, so I don't really see any reason not to try it. Thoughts?
I also need to machine the head gasket surface of the heads themselves, to reduce combustion chamber size. I'm not sure the heads will fit on a 10" swing lathe, but if the do I think I'm going to bolt them to my faceplate an let her rip.....
This is the third time I've had this apart, the previous two having had it back to the machinist to clean up these surfaces and make them flat, and they still aren't. So, I am now very seriously thinking about attempting to fix this on my South Bend Heavy 10. I think I remember seeing someone on here several years ago who was using his SB 9" to machine old Porsche heads, so I don't really see any reason not to try it. Thoughts?
I also need to machine the head gasket surface of the heads themselves, to reduce combustion chamber size. I'm not sure the heads will fit on a 10" swing lathe, but if the do I think I'm going to bolt them to my faceplate an let her rip.....