Hey all. I have a 97 Polaris Ultra SPX SE and I recently broke my crank shaft. It snapped off about 1/2 inch into the clutch. Any ideas on why this has happened or have any of you heard of this before? One shop around me said it was likely a factory default, which does me no good because I just bought the darn thing. Anyway, what are my options here? I've gotten preliminary estimates from 2 different shops at around $1500, which I am having a hard time justifying spending. One shop even said that finding a new engine would be an option (c'mon?!?!). Can it be rebuilt? Welded? Thanks in advance!

Joe

You did not mention (miles?) Sound's like defect or some kind of harmonic distortion. For 1500 buck's, do seal's, ring's, hone, maybe even some performance goodies while it's torn down.(reeds) Should be able to rebuild unless cast block had also received damage. A tear down would definitly reveal
all. Save some buck's. Buy a shop manual and do the work yourself.

It's got about 4500 miles. I talked to a guy this week who said he would rebuild it for about $400 (he has a used rod), provided nothing else is messed up. I'm going to pull the motor this weekend and see what's up. I've also heard that this could be caused by having studs (192 in my case), going full blast (i.e. on a lake) and completely letting off the gas, applying a sort of reverse tourque because the track grabs so much. The guy I talked to said that everytime he has seen this happen (which isn't many), the sleds always have studded tracks and the people had been riding on the lakes. We'll see. Hopefully it won't be too much. The way this Wisconsin winter (if you can call it that) has been, I'm having a hard time NOT looking forward to the golf season. Thanks for the reply!

Good Luck!

DAT

It is more then likely caused by the clutch. If the clutch is wore out it can cause crank damage. It may need to be rebuilt. For $1500.00 you should be able to find a different motor to just drop in Good luck Riley

Don't even think of welding a broken crankshaft. Rebuilding a crank means resurfacing the journals only. The integrity of the metal CANNOT be restored. Use your broken shaft as a conversation piece only!