Thread: 951 rebuild question
05-14-2015, 11:44 AM #1
951 rebuild question
Just about to start putting my engine back together and had a quick question. Do I need to hone the cylinders when installing new pistons and rings? Previous failure did not damage the cylinders. Wondering if the rings will seat properly.
05-14-2015, 02:14 PM #2
- Join Date
- Feb 2011
Honing is much better than not honing, although I have done both. Putting a nice crosshatching on the cylinders cleans any small inperfections and helps with ring sealing/lubrication.
05-15-2015, 06:41 AM #3
I always hone. You want to take the glaze off the walls and give it a nice cross hatching
05-15-2015, 08:41 AM #4
Yes hone them, the crosshatch is very important for keeping oil on the cylinder walls.
05-18-2015, 10:10 PM #5
Also, if you don't know how to hone properly just find someone that does. It won't be expensive.
05-19-2015, 02:37 PM #6
If you are going to hone, you should be able to measure piston clearance too. You can get the piston clearance too wide very quickly by honing too much or doing it incorrectly. If you hone too much and the clearance is wide your motor isn't going to last as long as it should, and it might be noisy.
05-26-2015, 07:14 PM #7
I can't seem to find any 3 bond 1211 around here for the case halves. Any good permatex substitutes? Anaerobic flange sealant OK? Ultra black? Is it Ok to put a bit around the oil seals too?
05-27-2015, 11:19 AM #8
Yamibond is the only acceptable substitute... flange sealant, permatex, nothing like that is acceptable in my opinion. In a real bind i would use "Right Stuff"... but i'm not even sure i would trust that. I always put a thin film around the seals personally, at least on the ends where the cases meet.
05-27-2015, 11:51 AM #9
- Join Date
- May 2011
I second the Yamabond - very easy to put on with a latex gloved finger and never had an issue!
05-27-2015, 12:50 PM #10
I only use Threebond or Yamabond. DO NOT use any sort of RTV or "gasket maker"
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