Broken crankshaft

[dtrumbower]

Not my engine but looking to purchase boat. How does the crankshaft break this way? What is the ball park to rebuild the engine? I do live near Fond Du Lac, WI, and I know there are few people that do this that are Mercury employees too.

Thanks

https://wenatchee.craigslist.org/boa/d/east-wenatchee-1994-sanger-barefoot-ob/7169917526.html

https://images.craigslist.org/00Y0Y_d9d029lHGfC_0CI0t2_600x450.jpg

[roadkill636]

That is a 13# cast iron flywheel that DONT FLEX.

gonna need a stator and full powered gasket kit and motels well piston rings along with the crank. Lookn at $100 if you do it all yourself.

[99fxst99]

That is a 13# cast iron flywheel that DONT FLEX.

gonna need a stator and full powered gasket kit and motels well piston rings along with the crank. Lookn at $100 if you do it all yourself.
I think you left out a zero��

[roadkill636]

Yep. I sure did.
Ment $1000 in parts

[dtrumbower]

I see brand new cranks are $2K. Might be better off getting a rebuilt powerhead or upgrading to a newer engine.

[Capt.Insane-o]

Someone tried pretty hard to do that.

[Merc 2.5]

I see brand new cranks are $2K. Might be better off getting a rebuilt powerhead or upgrading to a newer engine.

Just get used crank for 2 or 300$ if the journals r smooth its prob good to go , u can also have a run out done on it to make sure ( cheap)

[FUJIMO]

...i see a nice merc v-6 crank desk lamp in your future...

[eli]

I would like to know what would cause that

[Dave S]

Nut tooo tight….. Ski rope around F/W...…..HeeHee….. Try Many full blasts to pull skiers and a short prop......JMO.... Bet the top main saddle is wallered…..

[eli]

I pulled a inline flywheel once with nut installed had a fart ,no thread left yikes dumb azz

[Merc 2.5]

Nut tooo tight….. Ski rope around F/W...…..HeeHee….. Try Many full blasts to pull skiers and a short prop......JMO.... Bet the top main saddle is wallered…..

So u think it was small prop pullin skiers and such? Wouldnt it had tore the hell out of the inside of the cowl when it came loose?? Wonder if sumone was tryin pull flywheel with the rite tools?

[David - WI]

That doesn't really look like the top of a crankshaft... or I'm just not seeing it correctly. :confused:

471054

[FUJIMO]

...i think we just got set up...

[HStream1]

Yep It fits that taper really well doesnt it?


That doesn't really look like the top of a crankshaft... or I'm just not seeing it correctly. :confused:

471054

[InjectorService]

I saw that on a Yamaha F150 once. Who knows what happened to it, I think the motor was sunk though, probably corroded and a monkey pried on it or something without the right tools.

[HStream1]

And POOF Its gone!!! https://wenatchee.craigslist.org/boa/d/east-wenatchee-1994-sanger-barefoot-ob/7169917526.html

[Merc 2.5]

And POOF Its gone!!! https://wenatchee.craigslist.org/boa/d/east-wenatchee-1994-sanger-barefoot-ob/7169917526.html

Ya I clicked on it when I posted and it was gone , wonder if op got it?

[skeeter91]

i bought a motor (1999 200 EFI) from a close friend of mine that had the same exact issue. Broke at the dock coming to a weigh in. I put another crank in it, along with a bunch of other goodies and ran the snot out of it until i got my 3.0, it's still sitting in my shop. I also have the end of the crank on the "wall of speed sacrifices" posted pics of it a few years ago, ill see if i can locate them.

[skeeter91]

https://www.screamandfly.com/showthread.php?326865-broken-crank&highlight=broken+crank
471136471137

[TEXAS20225]

:thumbsup:seen it more then once

[Dave S]

That's why I like the light flywheels...…..Heavy ones for fissin' boats...….