Got spree running, terrible noise!

[the496rocket]

Well, after a few posts here, I got a new piston and rings, and a good cylinder, and It fired right up tonight, the noise I will be asking about it had before the rebuild, but I couldnt hear it... because the thing wouldnt run. now that is it running, I am trying to identify the noise. It is a terrible grinding/rubbing noise that sounds like it is coming from the crank case. It is not the clutch, starter gear, or any other tranny parts.

I think it is a toasted crank bearing, as it sounds like it, and It has zip power, it runs perfect, just powerless, maybe because of the bad bearing laboring the engine. It does it when idling or moving. What do you guys think?

also the starter is hard to turn it over, and sometimes just "zings"

[maddog]

Take off the front pulley, take the sprk plug out and turn the crank by hand slowly and feel for binding, do not run the engine or you mess up the piston.

[the496rocket]

Ok, Ill try that tonight, if it does bind, what does that indicate? need new bearings? crank?

[noiseguy]

Hopefully just bearings, but you will want to check the crank at the same time.

[the496rocket]

Ok I just bought a ton of spree parts from a guy, so parts will not be an issue. How do I go about checking the crank?

If I turn the crank and it binds at a certain spot every time, does that mean the crank is bent?

[maddog]

crank bearings will go before the crank does, you would have to take the crank out and run a dial guage on both shaft ends also check the con rod for lateral play.

[KillinSpree]

If your spree is still making the noise it might be a peice of the piston broken off in the crank and it could be getting caught on things when it is running. Just a thought. cya

[MySpree]

is it aorta a sqeaking noise? i have some crank berings. only one is good. the other one squeaks... LOUD.

[the496rocket]

Ok after hours of frustration, I finally got it running! it sounds great (outer crank bearing was FRIED) and crank was bent. Put in new parts, fired right up, and nice and quiet. It still seems low on power, either that or I am just too used to my aero, but say you stand up and floor it and hold back on the bars, should you be able to hold the spree or should it spin or take off, and you cant hold it back?

Also, what should I allow for break-in and how much throttle?

[maddog]

BTW. how did you know that the crank was bent? i hope you changed both bearings & seals?!!!

[the496rocket]

When I reassembled it, it was binding when I spun it by hand, so I changed,