NORMZILLA44
Addicted to ArboristSite
Definately suck's hope it gets on the road again.
066 Carnage!!!! NOT for the weak at heart!!!
- Thread starter bigblockburris
- Start date
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tolman_paul
ArboristSite Guru
My guess is the top end bearing froze, that would cause the rod to break and the piston pin to be pulled out of the piston. With a 1/2 rod flailing around and misc engine parts destruction would be fairly complete to the piston and cylinder.
Mastermind
Work Saw Specialist
I ended up with that saw. It's in a box under my bench in pieces. I'll stick it back together if I ever get time...
Stihl n Wood
ArboristSite Operative
Oh come on its not that bad, $hit a beer can and some WD-40, maybe matches and saw gas? MacGyver would already be out cutting with it!! No I'm just funning, that's some real damage.....Hope it somehow rejuvenates itself ....
almondgt
Addicted to ArboristSite
Life is a mystery..........the demise of the OP's saw appears to be the same. Certainly that 066 will be rebuilt before to long
please start a thread when you do.
Mastermind
Work Saw Specialist
I'm only needing a pto side bearing to have all the parts. The biggest thing is that I'm slammed with work and really don't have much time for working on my own saws right now. Surely there will be a lull before long though.
Naked Arborist
Hack from way back.
nice! glad nothing came out
IMO it had to be a piston pin wall that broke loose on the down stroke. If it was a timing failure the rod would be bent not twisted off. The same "bent rod" happens when water gets in the cylinder of a boat engine.
I and others I know, have seen this may times in a high revving SBC drag racing engines "revs over 11,000 RPM's", that let loose a pin wall and yes, it did the same amount of damage to the engine. Almost always we find signs of a cracked piston pin wall after the autopsy. The tell is rounded edges on the crack in the piston pin wall. The crack will flex just enough to cause the fine split lines to be slightly worn. You'll need a 10-20X power magnification to see it clearly. Broken piston skirts tend to just fall off and get eaten by the crank.
R.I.P. ol 66 or have a good long look at the case and crank. We did manage to save a block one time, even though it had a huge chunk missing from the base of a cylinder. Cranks are a 50-50 shot whether or not they got bent or hit hard on the rod journals and mushed out of round.
The case bearings will probably have flat spots in the ball bearings. IMO don't use them over, you may be asking for a seizure next time around.
IMO it had to be a piston pin wall that broke loose on the down stroke. If it was a timing failure the rod would be bent not twisted off. The same "bent rod" happens when water gets in the cylinder of a boat engine.
I and others I know, have seen this may times in a high revving SBC drag racing engines "revs over 11,000 RPM's", that let loose a pin wall and yes, it did the same amount of damage to the engine. Almost always we find signs of a cracked piston pin wall after the autopsy. The tell is rounded edges on the crack in the piston pin wall. The crack will flex just enough to cause the fine split lines to be slightly worn. You'll need a 10-20X power magnification to see it clearly. Broken piston skirts tend to just fall off and get eaten by the crank.
R.I.P. ol 66 or have a good long look at the case and crank. We did manage to save a block one time, even though it had a huge chunk missing from the base of a cylinder. Cranks are a 50-50 shot whether or not they got bent or hit hard on the rod journals and mushed out of round.
The case bearings will probably have flat spots in the ball bearings. IMO don't use them over, you may be asking for a seizure next time around.
Mastermind
Work Saw Specialist
You guys remember this thread?????????
I'm gonna get this saw back up and running today. I plan to use it for my Build Off entry. :cool2:
Pics will be posted............:msp_thumbup:
I'm gonna get this saw back up and running today. I plan to use it for my Build Off entry. :cool2:
Pics will be posted............:msp_thumbup:
Mastermind
Work Saw Specialist
It will probably be a few days Mike. I'll be sending the piston to KY......
Naked Arborist
Hack from way back.
Did you find out what caused the carnage?
Mastermind
Work Saw Specialist
All I know is that something gave up......it was all downhill from there.
Here's a few pics....
I'm gonna start a different thread for the build.....
Naked Arborist
Hack from way back.
looks like you'll have a bit of extra volume in that lower case area lol. It's a wonder the damn thing will live on after a blast like that :rockn:
wish you would just leave it here since i already subscribed to this thread. if you do move it how's about putting a link in here? good on ya. jerry
Mastermind
Work Saw Specialist
thanks for the link
mitch95100
Saw Nut
that 066 went neuclear!
Mastermind
Work Saw Specialist
that 066 went neuclear!
And stuff. :cool2:
