Discussion in 'Chainsaw' started by newlogger, Sep 21, 2011.
I like how they look with the full cover.
still need parts
hi ! mean time, I still need piston and cylinder. I checked the crank, rod and bearing and found out they are still all right. ( didn't find any flat spot on the bearing )
Since it is Chrome plated or Ni-Si plated Aluminum cylinder, I don't think it can be re-bored.
I hope you can get the parts you need because although they are a thing of beauty there is a beast underneath.
I love my SP-81 enough that I've gotten some "piece of mind"....
Traded a good running, but "not my style" modern saw for this McCulloch SP-81/PM850 piston/cylinder/etc "kit" and a couple NOS bars. These will keep my saw running for a long time to come. He's happy, and I'm VERY happy.
I've since sent the 92520 'C' piston back to the fellow I traded with. He sent me some $$$ to cover it, and I've already gotten an NOS 92518 'A' piston for my cylinder using said $$$. All is well!
I've seen NOS pistons and cylinders for these saws on feebay quite a bit over the last year or so.
is that jug for sale ???
I'm sorry but it isn't for sale. I got it to keep my SP-81 in business for a long time. That saw has some light scoring already. I may be able to save the existing cylinder with a new piston (and a cleanup of whatever alluminum transfer might be on the cylinder walls), but the jug may well be damaged as well. The scoring is on the intake side, which usually means it ate something it shouldn't have.
Reviving old thread hoping you fellas are around yet
Have an SP80 with unmarked cylinder
What i would like to know exactly the differences a b c
Unmarked is a B cylinder. You need a B piston. Part # ends in 19.
Eccentric, what are the critical dimensions that differentiate the three options?
I don't know, other than McCulloch specified that the pistons and cylinders must be matched up. Even though I have had all three sizes of new pistons here at one time or another I never bothered measuring them.
The rings are one part #, so the dimensional difference must be small enough that one set of rings still works for all three sizes.
See below for he details on the cylinders and pistons.
FWIW - The SP80 had a different cylinder & piston than the 81, 81E, and PM850 saws.
They changed again for the PM805, 800, and Super 850 with some having a compression release above the muffler, some having the "Q" port. DE80 interchanges with the PM800, PM8200 is all alone in its design.
Joey Taylor stopped to see me a few years ago and we spread out our 82 cc McCulloch saws for a photo op. I need to so this again as I have added the complete round up in my collection now.
I overlooked the 81 info and that all makes sense now. Tge piston i ordered is an A but that is fine if getting it replated eh
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