Freestyle I'm scratching my head at this one...........
- Thread starter bach6177
- Start date
Quinc
Buy a Superjet
- Location
- California
Possible faulty piston?
- Location
- Saskatoon,SK
As Jetfiend said, I think a crank bearing or bearing cage has failed, something went thru the top end, that piston was hit from the top, matching marks should be on the head also. Is that signs o detonation I pic 2, can't see well o t phone?
Rc617
I blow clouds, premix clouds
- Location
- Stockton ca
back when I raced motocross i had a cr125 that did that twice to the oem piston. The shop I went trough said mix 50/50 race and pump gas. I did that and it never happened again.
- Location
- outer banks
i would split cases to be sure its real easy anyway to do! just for peace of mind!
bored&stroked
Urban redneck
- Location
- AZ
A detonating animal it seems. Had a motor do that to me as well. New top end, ran most excellent for about 2 hrs then locked up when the piston came apart.
That's the odd part, this one ran excellent for a many tanks of fuel and nothing was changed on it. Other than it hydro locked recently.
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I thought you just put total loss on it and then this happened?
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I never started it. Did a compression test to see if I needed race fuel so I can go get some. That's when I found this
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Ducky
Back in the game!
- Location
- Charlotte, NC
Maybe the ring gap was too small??
cookn
Kamikaze
- Location
- where you live
yea to me it looks like a big dirty ring snag but who knows, hows the cylinder look?
Cylinder isn't as bad as you would expect from the looks of the piston. Going to need a clean up bore and the lower end cleaned out
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I checked all the ring gaps and filed them to get them into tolerance.
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I don't see what your getting at? I get the whole "twangled" thing but what does that have to do with me or the motor?Looks "Twangled" to me!
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