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1976 CB550F1 (what have I let myself in for) Project
Nurse Julie:
--- Quote from: eight0 on February 28, 2021, 11:55:25 AM ---I've pulled the head again and checked the piston that was hanging up the most.
Without the rings it drops through. With the rings it's really tight, but maybe it's supposed to be this tight?
https://youtu.be/glUKwGO5nxU
--- End quote ---
No, that is definitely not right.
Edit... Difficult to see on the vid but there appears to be a big gap fore and aft, piston to barrel. Have you tried that piston in another bore?
eight0:
It looks like there's a gap because of the taper at the bottom of the barrel.
Good to know that shouldn't be like that I guess. I was contemplating cracking the cases again. If I have to get more pistons and another rebore then so be it. I'm this deep in.
Nurse Julie:
--- Quote from: eight0 on February 28, 2021, 12:27:07 PM ---It looks like there's a gap because of the taper at the bottom of the barrel.
Good to know that shouldn't be like that I guess. I was contemplating cracking the cases again. If I have to get more pistons and another rebore then so be it. I'm this deep in.
--- End quote ---
I would start by taking it back to the machine shop that did the work. They did the work, they can measure everything up again and advise.
eight0:
Thanks for the advice Julie.
I'll go over there tomorrow. Seems odd that the ring gap is in spec and the pistons fall through without the rings bit it's still binding.
Nurse Julie:
--- Quote from: eight0 on February 28, 2021, 12:46:00 PM ---Thanks for the advice Julie.
I'll go over there tomorrow. Seems odd that the ring gap is in spec and the pistons fall through without the rings bit it's still binding.
--- End quote ---
Let us know how you get on.
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