Polaris Polaris Ultra 680 Project Sled - Engine Status (Part 2)

[@snowking55]

Looking forward to your tear down Streeter, should be interesting. Some new seals, and get the crank specked out along with new bearings you should have a runner.

[@StreetersGarage]

I’m very confident on the condition of the top end. I used a boroscope and I can see the reflection of the pistons in the cylinder walls and the heads look spotless. I’ll find out for sure this weekend.

[@MBTUE]

Hopefully there are no top end problems when you open it up. That will save you some money.New crank will cost a few bucks.

[@StreetersGarage]

Yes. Probably around $350 for a crank. Still looking at options. Top end looks really good. I can see the reflection of the pistons in the cylinder walls.

[@MBTUE]

@@StreetersGarage Maybe another option is a different engine. The problem is those sleds would go and go if looked after so it might be hard to find a good one that's not all worn out.Sometimes new is the way to go.

[@StreetersGarage]

That’s also an option. The challenge has been that any decent donor sled that I could pull from in my area is in better condition than the project and doesn’t make sense to sacrifice it. Right now I have a contact that has new Polaris cranks in the box for $350. I’ll probably go that route once I do the tear down on Friday and see the rest of the condition.

[@jackhiggins4971]

Any tips on pulling the motor? I can’t fit anything on the backside nut on the front motor mount bolts.

[@StreetersGarage]

Yes it’s a tight fit. I was able to use an offset box wrench to hold it.

[@xaNoz92]

Is it usual to have oil ‘leak’ under the three pipes from the motor? I see the motor on this also have oil on the same place. Is it coming from the exhaust or engine? 😥

[@StreetersGarage]

seepage is normal. It's a result of leaking gaskets.