I would take the cylinder off and inspect the crank for movement or something broken before splitting the cases...by the sounds of it though I would think that crank is shot
Thoughts on partially seized motor.
- Thread starter ford_guy
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I would take the cylinder off and inspect the crank for movement or something broken before splitting the cases...by the sounds of it though I would think that crank is shot
Worked on a Blaster few yrs ago that the RT seal was in pieces and trans was bone dry. Came to me for carb clean, first start up it went into auto ignition, crazy SHIZZ..
I would still leak test before teardown/inspection.
I would still leak test before teardown/inspection.
auto ignition? and yea im gonna tear it down this weekend. Ill just do the complete rebuild and never have to touch it for the rest of the life (hopefully)
Auto ignition or runaway. Running so lean that the spark plug instantly becomes a glow plug and it revs like it's WFO, kill/key won't kill it. Only way is stuff something in carb, rip carb off, or pull clutch, hold brakes, shift into gear, dump the clutch. You will SHIZZ yor pantaloons when it happens 
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Disassembly and inspection is the only way in my opinion.
How long has it been since that engine has been apart?
If was pretty recently, something is definitely wrong.
If it has ... say... a billion hours on it, its time to do it anyway.
Longevity and reliability should be your goal. Why "half ass it" just for the sake of riding it?
How long has it been since that engine has been apart?
If was pretty recently, something is definitely wrong.
If it has ... say... a billion hours on it, its time to do it anyway.
Longevity and reliability should be your goal. Why "half ass it" just for the sake of riding it?
I had rebuilt it and I put maybe 20 hours on it since the rebuild. After I put the toomey on I blew it up within 3 hours of riding! I only rebuilt the top end as well.
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The main causes of a partial seizure are closed head injurys and pre-existing seizure conditions. They typically are followed by a complete seizure. Did you lose conciousness? Did you wet yourself? Regardless a seizure that is not normal to you ALWAYS requires immediate medical attention and should be addressed by an ER Doctor at a hospital rather than a forums about Yamaha Blasters.
Chevy4life is my friend trolling
And yes the 310 that toomey suggested. I followed up with a plug chop.
Ok so I took it apart and brought it to the guy who knows everything about blasters. We inspected to see minimal scratches in cylinder and a massive amount of dirt in the crank. Basically dirt got into the intake somehow. The top end can be rerung and reused but looks l like a bottom end rebuild! I found the kenny oconner video on youtube so I am hoping to do this within 2 weeks but we will see about that one haha. I will post pictures of rebuild upon request!
he can thank you for that heads up, as his post was written very similar to the pakastani spammers I ban everyday on here, and he almost got the axe along with them, but his IP address wasn't Punjab Pakistan
of course we want pics !
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