Bye Bye 750.

[SuperjetSteve]

Yea pictures explain it all. POS blew up. Any ideas why?

 

[Crab]

Small pin pistons were crap.

 

[#ZERO]

Take the cylinder off you'll have your answer.

 

[SuperjetSteve]

I cant get the two middle bolts off.

 

[SKItarist750]

Yea pictures explain it all. POS blew up. Any ideas why?

what year 750??? If it's 92-95 you probably blew at least one of your crank bearings. Those years had the small pin cranks and they're junk. Believe me I know. my 93 750 K,O.'d a couple summers ago, crank bearings, pistons and all. Blew the skirts right off both my pistons. If you decide to do a rebuild, you'll have to replace your crank or send it off to get refurbished (both of which are expensive propositions). That's what I did. If you do all the tear down and the top end rebuild yourself, you're still looking at $700 on the low side to clean up your head and cylinders and get new pistons and rings and to have your crank rebuilt. If I had it to do over again, I would just get a new motor. Crate sells them for about $700. Just look in PWC illustrated or ask around. Sorry bout your luck dude

 

[yankeeboy]

good thing it blew up, now you have more time for your superjet :smile:

 

[tor*p*do]

Just part it out and put the $$ into the yamaha!

 

[SUPERJET-113]

Kawajunki!

 

[Idok]

bye bye old kawi junk!


those are all 750 motors btw....dont know if they were big/small pin though

 

[DAG]

what size pins does a 750 that came out of a 1995 ZXI.

how reliable is this motor? and what should the stock compression be...


sorry for the O/T

 

[750SX]

IDK why everyone rips on the size of the kawi small pin wrist pins. They are the same size as a superjet. You deff lost a crank bearing/broke a rod.

 

[SKItarist750]

what size pins does a 750 that came out of a 1995 ZXI.

how reliable is this motor? and what should the stock compression be...


sorry for the O/T

I'm pretty sure the 95 ZXI 750 has big wrist pins. stock compression for a 750 should be 150 minimum.

 

[djkorn1]

It was probably due for a rebuild and blew a crank bearing. (Especially if that is the original crank). Take it apart and see what is salvagable...(cyllinder?)

You can pick up cases cheap ($100). Get a crank from SBT (stronger than the stock Kawi's), and a top end kit from Wiseco. Then bore the cyllinder, reassemble and your done.

 

[ksmith83]

bye bye old kawi junk!


those are all 750 motors btw....dont know if they were big/small pin though

are those for sale or for your own personal enjoyment?

 

[Conquistador]

It was probably due for a rebuild and blew a crank bearing. (Especially if that is the original crank). Take it apart and see what is salvagable...(cyllinder?)

You can pick up cases cheap ($100). Get a crank from SBT (stronger than the stock Kawi's), and a top end kit from Wiseco. Then bore the cyllinder, reassemble and your done.

I just had the same thing happen
http://www.wavejunkies.com/phpBB3/viewtopic.php?f=14&t=4574

I think I'm going for an sbt...

 

[WFO Speedracer]

Hmmmmm you act like its just a kawi thing,its not ,these cases are green but guess what Its a Yami,ahhhhhhh destruction at its finest.


http://www.x-h2o.com/threads/38834