Riding along when motor seized!!!
Stellar HDF Member
Joined: Sep 2013
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From: USA
Kinda figured you couldn't see the pictures. I was able to open the link he posted with the pictures before they appeared in the thread. I guess a domed piston could do it. It really wouldn't take much. I'm guessing that all the head bolts are dropping down far enough to clear. It does look like a head bolt is sitting on the acorn nut at the cylinder base.
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Joined: Mar 2009
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From: Niles Canyon Ca.
Been following this thread but didn't want to chime in you've got enough cooks seasoning the stew as it is.
Seasoned HDF Member
Joined: Jan 2015
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From: Sandy Eggo's North County
Suppose it's oil related?
Oil pump fail?
Relief spring fail/break/dislodge?
Oil level depleted?
Pickup path cavitation?
Debris at oil pump?
Cylinder walls scored?
OP~ did this happen when the engine was at full operating temperature?
Or, overheated?
Plug looks ok. Maybe a little dark which would indicate a rich condition. A "rich" condition is likely a cooler running condition. (As opposed to a "lean" condition.)
Oil pump fail?
Relief spring fail/break/dislodge?
Oil level depleted?
Pickup path cavitation?
Debris at oil pump?
Cylinder walls scored?
OP~ did this happen when the engine was at full operating temperature?
Or, overheated?
Plug looks ok. Maybe a little dark which would indicate a rich condition. A "rich" condition is likely a cooler running condition. (As opposed to a "lean" condition.)
Seasoned HDF Member
Joined: Nov 2006
Posts: 12,878
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From: la la land jerzey
he had just serviced it GUESSing he used the hose connection at the oil pump and did not purge it when he added oil [ it was air bound would be a guess as to what has happened
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From: GERMANY
*UPDATE - dont know but digging deeper as we speak... no i didnt change the oil before i rode it, oil tank was half full! Speaking of how do I purge it for when i do change my oil? SEE PROGRESS PICS BELOW AS I TAKE OFF PART FOR PART!!!
https://www.flickr.com/photos/152682.../shares/QjDGsw
https://www.flickr.com/photos/152682.../shares/QjDGsw
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From: GERMANY
UPDATE - i got the rear head off YaY with motor still in!!! Probly by using alitttle more force that i shoulda and scratched some stuff but it was tight see pix... but I WAS WRONG ABOUT THE PISTON BEING UP , that was just the lip of the jug.
Pistons down like the other one, not exact same postions but close, looks the same as the other just the scratches on top are from me trying to push it down with a screwdriver...
I ONLY KNOW, I THOUGHT IT WAS UP BUT IM NOT SURE ANYMORE, if its down from me pushing on it i DID NOT feel it go down!
NOW WHAT?
[url="https://www.flickr.com/photos/152682986@N05/shares/gGL052"]
Pistons down like the other one, not exact same postions but close, looks the same as the other just the scratches on top are from me trying to push it down with a screwdriver...
I ONLY KNOW, I THOUGHT IT WAS UP BUT IM NOT SURE ANYMORE, if its down from me pushing on it i DID NOT feel it go down!
NOW WHAT?
[url="https://www.flickr.com/photos/152682986@N05/shares/gGL052"]
Last edited by unluckyluke; Mar 12, 2017 at 09:32 AM.
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Joined: Feb 2017
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From: GERMANY
TRIED TO TURN THE ENGINE OVER AGAIN at the compensator nut, IT WILL NOT TURN, i didnt use full strength but with alittle bit of force on a long ratchet handle, how easy should it be to turn?
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From: Poolville
Should spin with very little effort. Time to split the cases..... Have you opened up the cam chest yet? your problem could lye in there....