New project ski 1997 gsx

[andrew224]

So im back into fixing up older skis again, picked up a nice 97 gsx with a locked up motor over the weekend, has 112 hours on it and looks pretty clean, tore down the motor to find the pto cylinder with exhaust side of the piston and cylinder have some scraping and need to be fixed/bored. After removing the top end which came off easy found the crank was stuck, tapped the crank a little with a piece of wood and it freed up and rotates perfect, but found a good amount of water at the bottom of the case, sucked it out and flushed out with seadoo lube 2 times. Sounds to me it hydro locked , other than changing oil in cb and new pistons and fixing back cylinder is there anything else that should be done? crank seams fine , its unfortunately a year or two old sbt motor if that helps any. Would sucking in enough water and trying to run on it junk the piston/cylinder? Also if anyone has any extra 787 cylinders/pistons let me know. thanks

 

[Jetskigoodies]

The crank is probably toast. If there was water sitting in the cases the bearings are probably all rusted. I bet if you split the cases you will see the crank is bad, the bearings will spin real rough and will be noisy.

 

[Minnetonka4me]

It wont last long...I agree with JSG it needs to come apart.

 

[andrew224]

it wasn't full of water but had maybe a half an ounce or so in each side, water was perfectly clear no color at all, no signs of rust or anything like that. so not sure how long its been in there, guy i bought it from decided to wash it down before i bought it with spark plugs barely threaded in, and i think some might have got in that way. any thoughts on the exhaust side piston/cylinder scoring?

 

[Minnetonka4me]

If the crank was frozen enough to be stuck there is surely pitting. Pitting will destroy the part much sooner than later.