Cracked engine. What are my options?
- Thread starter fapslap
- Start date
- Location
- Minneapolis, Minnesota
Probably a lot more damage than just the lower cases. Take the coupler off, take it all apart and start replacing broke stuff.
Mike W
Infidel
- Location
- North Florida
Replace the cases at a minimum. Question is, what caused the case to crack?
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Two things cause cases to crack, rod bearings going out or internal pieces of the engine got loose and got in between the rod and the case, either way you will be tearing that completely down and replacing whatever needs to be replaced.
bored&stroked
Urban redneck
- Location
- AZ
Options:
A- tear apart and replace broken things
B- buy different engine and put it in there
C- JB weld it and see if it last another 1/2 day before you realize A+B are the only real options
A- tear apart and replace broken things
B- buy different engine and put it in there
C- JB weld it and see if it last another 1/2 day before you realize A+B are the only real options
- Location
- Charlotte, NC
You might could tig weld the bottom cases but the hard part there is getting the cast aluminum clean enough to get a good weld. The oils have a tendency to soak into the aluminum making it very difficult to get a good clean weld that will hold up.
- Location
- Irish Hills, MI
Other than flywheel and pto coupler the rest can be torn down with basic metric tools. Get the cylinder off at least then let us know.
- Location
- Charlotte, NC
8, 10, 12, 14, I think 17mm socket gets the flywheel nut. Just need those sockets and hand wrenches to take the entire engine apart. Its pretty easy and definitely necessary to learn if you plan to own a stroke jetski.
Awesome! you have inspired me to do some learning!
- Location
- Charlotte, NC
There is so much good information on this site as well. I dont at all recommend disgracebook for anything haha
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
That is easily weldable by someone who knows what they are doing however insist that they weld it with the case halves bolted together and torqued, the chances of warping the case is great if it is not done properly
- Location
- Sarasota, FL
Def take coupler first off before anything else. You can stick a piece of rope down into the cyls via plug hole to lockup the crankshaft to be able to free the coupler (will be on there very tight), coupler is a LEFT-HAND thread - clockwise loosens it. You'll need a puller for the flywheel', not hard to do. Take it all apart and inspect, post pics and you'll get all the help you need here.
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Sent from my SM-G991U1 using Tapatalk
- Location
- Ahwahnee, CA
. Negatory ghost rider. Crank coupler loosens counter clockwise (standard threads, lefty-loosey).
Definitely good advice though to take the coupler off before removing crank from cases though.
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
61X CASES OR 62T CASES ?
- Location
- Western NY
Aren’t all bottom cases the same, 650-760? I would think just grab a cheap 650 bottom case instead of bothering to repair that one
- Location
- Western NY
But yeah I’m with wfo, I would bet piston skirt cracked off, and crank punched it into case, and usually when piston makes it to bottom end you’ll need a crank too. If that’s the case there’s not a lot left you won’t need to replace
- Location
- Canberra, Australia.
Cases need to be replaced as a matched set as they are line bored. Replacing just one case will likely result in a mismatch, even though it might be minuscule.