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Pulled the motor from my friends boat today and found something bad:P

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Originally posted by: Squisher
Originally posted by: MrDudeMan
holy shiznit! yikes!
Click to expand...

Agreed.

Even without oil I don't see his happening. I mean WTF!!!

Piston would've have had to wobble to such a point that an edge dug into the side.

The block has to be toast.
Click to expand...

yeah, the worst case scenario for no oil is pretty much a snapped rod or broken crankshaft (unlikely) but wtf happened to this thing? looks like someone took a sledgehammer to it
 
Originally posted by: MrDudeMan
Originally posted by: Squisher
Originally posted by: MrDudeMan
holy shiznit! yikes!
Click to expand...

Agreed.

Even without oil I don't see his happening. I mean WTF!!!

Piston would've have had to wobble to such a point that an edge dug into the side.

The block has to be toast.
Click to expand...

yeah, the worst case scenario for no oil is pretty much a snapped rod or broken crankshaft (unlikely) but wtf happened to this thing? looks like someone took a sledgehammer to it
Click to expand...

gonna dig into it a little more this weekend. I'll get some more pics and update

 
Originally posted by: Citrix
wow... so how much is that going to cost to fix? Boat moters are $$$
Click to expand...

If the core was in good shape he could get a rebuilt for 1k, but since its obviously not, hes gonna check and see what they'll give him for it as a core, I'm guessing total should be 1.5-2.5k
 
Possible to bore out both cylinders, then resleeve. New pistons, rings, rods possibly, and all the other stuff. Get the oil injector(s) working again...The machining will be the biggest expidenture, unless you have access to a machine shop at your college/HS.
 
Originally posted by: TechnoKid
Possible to bore out both cylinders, then resleeve. New pistons, rings, rods possibly, and all the other stuff. Get the oil injector(s) working again...The machining will be the biggest expidenture, unless you have access to a machine shop at your college/HS.
Click to expand...

were planning on reboring the cylinders, but want to make sure the lower end isn't mangled since theres probably lots of metal shavings down there. if its gonna be over 1k to rebuild ourselves, were going to go with a complete warranty and atleast get a 1 year warranty on the motor than😛
 
The crankshaft is probably all ball & roller bearing, they are pressed together. Cleaning the shavings out of the caged rollers in the con-rod journals is near impossible without a disassembly of the crank. If the rods don't have removable
caps, that means the crank has to be pressed apart. This work ha$ a price.

I raced outboard boats as a teen and rode dirt bikes in my 20's. Strokers run best, just before they blow-up 😛

Good luck in your adventure.

g/y
 
Good reference site http://yamahajetboaters.com/forum/index.php
Site is run by jeff , a ls2000 owner . Lots of owners helping owners.
An interesting way to avoid oil injection problems is to disable it and premix the fuel . This is not the best answer , but does lubricate the engine well.
Try the site , lots of tricks , tips , and vendors suggested.
Sea doo has a similar owners forum , but I believe (?) thier engines are rotax and merc ; where the Yamahas are Yamaha powered.

Jim
 
Originally posted by: xgsound
Good reference site http://yamahajetboaters.com/forum/index.php
Site is run by jeff , a ls2000 owner . Lots of owners helping owners.
An interesting way to avoid oil injection problems is to disable it and premix the fuel . This is not the best answer , but does lubricate the engine well.
Try the site , lots of tricks , tips , and vendors suggested.
Sea doo has a similar owners forum , but I believe (?) thier engines are rotax and merc ; where the Yamahas are Yamaha powered.

Jim
Click to expand...

Yeah that place is awesome my friends been haging around alot there. If ya go there look for a post about a blown motor😛
 
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