066 P&C failure. W/pictures

matt9923 · Feb 25, 2010

Got this saw today form a member. Great person to deal with!!

Anyway, i asked them if they would include this when they shipped it. Figured it would fit on the shelf of shame.. or box until I rebuild the shelf.

blsnelling · Feb 25, 2010

It's hard to tell from the pics, but is the rest of the cylinder OK? If so, grind the rest of the bridge out on both sides an run it. It would be an interesting experiment. I'm sure it's been done before, but I've not seen it done.

Meadow Beaver · Feb 25, 2010

Someone forgot to put the other e-clip in.

volks-man · Feb 25, 2010

so,
whats the problem?

re-ring it and run it!

matt9923 · Feb 25, 2010

few more with some light

matt9923 · Feb 25, 2010

blsnelling said:
It's hard to tell from the pics, but is the rest of the cylinder OK? If so, grind the rest of the bridge out on both sides an run it. It would be an interesting experiment. I'm sure it's been done before, but I've not seen it done.

you think it would work? If i can find a cheap piston id try it. Or maybe just send it to you.

Mad Professor · Feb 25, 2010

StumpStomper said:
Someone forgot to put the other e-clip in.

Or the "quality" Chi-Com piston spit the "quality well fitting" clip.

matt9923 · Feb 25, 2010

Mad Professor said:
Or the "quality" Chi-Com piston spit the "quality well fitting" clip.

It says Mahle on it

MS260 Fan · Feb 25, 2010

matt9923 said:
you think it would work? If i can find a cheap piston id try it. Or maybe just send it to you.

It's definitely worth a try. I was looking at an 084 race saw cylinder that had both transfer bridges removed. I know nothing about race saws so thought this could have been standard practice. That was a cool cylinder!

nanuk · Feb 25, 2010

066 with open transfers?

must be new EPA regs requiring "OPEN" port transfers on one side to reduce emissions by 50%?

Mad Professor · Feb 25, 2010

matt9923 said:
It says Mahle on it

My bad, the black junk on the slug looks like the coating they put on the Chi-Com stuff, to keep them from seizing on initial start up.

P.S. The Mahle casting mark must be on the other piece of the skirt you fished out of the case, it's not on the pics you posted. Got a pic?

matt9923 · Feb 25, 2010

Mad Professor said:
My bad, the black junk on the slug looks like the coating they put on the Chi-Com stuff, to keep them from seizing on initial start up.

I agree it looks like chit. :laugh:

I didn't know until I looked at it and removed some grime.

blsnelling · Feb 25, 2010

matt9923 said:
you think it would work? If i can find a cheap piston id try it. Or maybe just send it to you.

Bring it on. I'd give it a try.

matt9923 · Feb 25, 2010

blsnelling said:
Bring it on. I'd give it a try.

Id do it but i don't trust my hand enough to cut them out... you have a saw to test it on?

MS260 Fan · Feb 25, 2010

Could you find a better cylinder than this to practice your hand on? Keep the pics coming!

matt9923 · Feb 25, 2010

MS260 Fan said:
Could you find a better cylinder than this to practice your hand on? Keep the pics coming!

I have a few that i will get more practice on and have ported a shot one someone sent me. Hacked it up but got me thinking about what I need to do the next time. I think ill use air next time, don't really like the dremel.

Brmorgan · Feb 26, 2010

Matt - your piston looks almost exactly the same as the one in the pawnshop '66 I just picked up a couple weeks back! I'd never seen anything like it before; upon close inspection mine was caused by extreme skirt wear & the skirt ended up snagging on the exhaust floor on the downstroke. At least that's my most-likely theory for now. Your piston appears to have similar extreme wear between the window and bottom ring on the really broken side.

My cylinder is still in A-1 condition though. Not quite sure HOW, but I'm not complaining.

I don't know if you're looking, but I just came into possession of an extra 066 cylinder that looks to be good to go. I'll clean it up and take some photos, but if it looks good and you want it we can work something out. I'm currently expecting a Meteor piston to rebuild the above blown 066, so if I get working on that before you make it to yours, I'll let you know how it goes.

dh1984 · Feb 26, 2010

heck i would give a wack at it you can't do anything worse to it then it really is. you could always take the rest of the bridge out and see how it does

matt9923 · Feb 28, 2010

Mad Professor said:
My bad, the black junk on the slug looks like the coating they put on the Chi-Com stuff, to keep them from seizing on initial start up.

P.S. The Mahle casting mark must be on the other piece of the skirt you fished out of the case, it's not on the pics you posted. Got a pic?

I never got the piece that musta been in the case. It was on the piston I had.

there was a #- 54L56 i think

rob066 · Feb 28, 2010

Gives a new meaning to windowed piston!

066 P&C failure. W/pictures

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