Other Crankcase Damage!

[Spheeler]

I got my crankcase apart and I noticed some damage to the bottom half.
I just wanted an opinion about what course of action to take.
Any insight would be greatly appreciated!

 

[JetManiac]

Looks like you had a rod let go. What does the other side look like? Is it cracked?

 

[Spheeler]

Looks like you had a rod let go. What does the other side look like? Is it cracked?

Thanks for the quick response.
The connecting rod doesn't seem very damaged, so I'm thinking it might have been replaced.
There also doesn't appear to be any cracks in the top section.
One rod is has an unacceptable amount of horizontal play though.
I've been told my pistons aren't stock bore and the rods say hot rods on them. Are they stock?

 

[dbattersby20]

hot rods would not be stock rods

 

[JetManiac]

Thanks for the quick response.
The connecting rod doesn't seem very damaged, so I'm thinking it might have been replaced.
There also doesn't appear to be any cracks in the top section.
One rod is has an unacceptable amount of horizontal play though.
I've been told my pistons aren't stock bore and the rods say hot rods on them. Are they stock?

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Your crank isn't oem, it is a hot rods crank. You will need to replace it.

 

[High Speed Industries]

Hot rods are horrible. Do oem crank or a rebuilt oem crank only. They are the only things that last. http://competitivecrankshafts.com/ that's who I get my ski and dirtbike cranks from.

 

[Spheeler]

Your crank isn't oem, it is a hot rods crank. You will need to replace it.

I've been looking for info and pictures about hot rods cranks and I've not been able to find much unfortunately.
How were you able to tell it was a hotrods crank for sure?
Upon further inspection I've noticed that hot rods is only on the rods, the actual crank has 6m6 and pro x on it but no other markings.
It just strikes me as odd that "hot rods" would only put their logo on the rods.
The info I've found says 6m6 is the "version" of 701 engine my ski came with.
Its also marked on the inside of the flywheel cover.
As for "pro x" I really have no idea.
Could the ski's previous owner have just switched out the rods when the others failed?

 

[WFO Speedracer]

Looks like you have an oem crank that was rebuilt with hot rods rods, the reason I say this is you have Koyo bearings, Hot rods crankshafts do not come with Koyo bearings.

 

[High Speed Industries]

I know my crank was a hot rods because I bought it new (big mistake) I will never use a hot rods again. The Kawi 750/800 crank webs seperate and the Yamaha 701 cranks usually crack. Just what I have seen online and from my buddies Pwc shop. IMO buy oem or have an oem one rebuilt. DO NOT REBUILD A HOT RODS it will break anyway. Here is a fun pic from a hot rods.