I bought a motor and was told it had some port work. I'm beginning to wonder what else was done. I measured all three cylinder bores and they're all about 72.3. I was planning on honing them so it looks like it will be to the next oversize.
I tried to measure some of the port dimensions and it looks like they did have some work done to them. Nothing radical.
But I think they may have done more than that but I'm not sure how to tell. Is there any way to measure the cylinder height to see if they machined the head mating surface? Below is a picture of the top of the center and the right cylinder. The center cylinder has a raised landing for the head gasket and head. The right cylinder looks like it's been machined so the gasket surface is pretty much flush with the top of the fins. The left cylinder looks a lot like the right cylinder. Is this normal?
Attachment:
IMG_7279_small.jpg
So, how do I tell if the left and right cylinders have been machined?
I guess the most important thing is that if they took a few thousands off the right and left cylinders it would raise the compression ration compared to the center cylinder. Don't like that.
The motor was shipped to me in pieces so I have no way of knowing if all these parts were actually from the same motor. Doesn't really matter but I do want to make sure it all matches up when I build it back up.
Any input is welcome,
Dave