064 Cylinder.
- Thread starter L34
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That is a fair amount of plating missing there. Would probably run but not sure for how/very long?
I'd be kind of afraid more plating might peal loose and start catching on a ring or the port.
If I gave it a try it would be with a well used or cheapo piston.
One more thought, you could take a used piston/rings, put some mix oil in the cyl, and try moving the rings past the bad spot, up and down by hand. Might tell if it's going to catch a ring right away.
If you try it keep us posted. Be interesting to see if it lasted long.
I'd be kind of afraid more plating might peal loose and start catching on a ring or the port.
If I gave it a try it would be with a well used or cheapo piston.
One more thought, you could take a used piston/rings, put some mix oil in the cyl, and try moving the rings past the bad spot, up and down by hand. Might tell if it's going to catch a ring right away.
If you try it keep us posted. Be interesting to see if it lasted long.
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Its Australian, it will tough it out- bevel the sharp edges off, pick flick to make sure its not loose around the edges- slap it back together and pretend you never saw it.
May not go on a saw for a while.
If I use it I will post updates.
Thanks.
Was given the cylinder yesterday.
Initial thought it was transfer.
If I use it I will post updates.
Thanks.
Was given the cylinder yesterday.
Initial thought it was transfer.
Couldn't be in a worse place.. The sides of the exhaust port (or any port) are what keep the rings from bulging into the port.
I don't think it would be much longer until it catches a ring on the upper or lower port edges. Personally I'd use it as a paperweight nothing more.
I don't think it would be much longer until it catches a ring on the upper or lower port edges. Personally I'd use it as a paperweight nothing more.
You can see the missing plating is allowing the rings to bulge into that side of the port.
The port edge is clearly worn halfway across top and bottom it's a miracle it hasn't hung a ring yet.
The port edge is clearly worn halfway across top and bottom it's a miracle it hasn't hung a ring yet.
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You pick flicked it yet?
Looks like there is a discolouration to the plating as far out again- where it might be ready to pop off some more and make the missing section twice as wide past the port.
Peel that off at 13,000 RPM and its going to get ugly.......
Do you think it is from a lean scored recovery and someone tried an acid clean- got some acid into the port and it went munching the raw exposed alloy at the coating bevel?
Looks like there is a discolouration to the plating as far out again- where it might be ready to pop off some more and make the missing section twice as wide past the port.
Peel that off at 13,000 RPM and its going to get ugly.......
Do you think it is from a lean scored recovery and someone tried an acid clean- got some acid into the port and it went munching the raw exposed alloy at the coating bevel?
thompsoncustom
ArboristSite Guru
I'd be looking into putting a different cylinder on it, I'd put a cheap 660 cylinder on there before I'd run that OEM cylinder again. It might work but it's anyone's guess and just begging for trouble.
Done that before.
Haven't got a 064 to build just asking about this cylinder.
No history on it bloke just gave it to me.
Haven't got a 064 to build just asking about this cylinder.
No history on it bloke just gave it to me.
If you are using it get the lose off grind a little around the edge that is missing and put a meteor piston in. I ran one for years with a spot above that. I thought it would make compression low, but didn't affect much.
thompsoncustom
ArboristSite Guru
I think I would have taken one look at it and walked out my shop door and tossed it in my big drum of scrap cylinders and go find another one-why bother going to all that work when you know the possable outcome- imo
