SX/SXi/SXi Pro 750sx motor

[anthonystempak]

Is there any problems with this motor? I heard they broke rings and cranks?
Or were they being leaned out. I wana run one but don't want any problems

 

[PLD]

Im running a 92 sx motor with the same crank and still on the stock bore its all up to how you maintain any motor. If you plan on using it to do continual full speed runs this is not the motor for you. I recommend the big pin 750 that came in the 95+ on year kawi's.

 

[john zigler]

good strong motor.

typically if there is a problem, it is user error, or just a million hours, and worn out.

 

[anthonystempak]

I guess maybe l'll put one in my 650sx hull then

 

[socal750]

They get warn out then the skirts break off the piston and BAM!!!!this motor was 1.75 over and had a zillion hours on it

 

[anthonystempak]

I'll make sure to run it on the richer side, and keep it within acceptable hours and keep the compression at 175

How many cc's is 1.75over ?

 

[kevbo]

Is there any problems with this motor? I heard they broke rings and cranks?
Or were they being leaned out. I wana run one but don't want any problems

1992 models had thin pistons and CDIs (3728 and 3729) with a backward timing curve. 1993-1995 had thicker pistons and the 3733 ignition that cured most problems. I have witnessed a small pin crank failure, the front pin sheared without damaging anything else. Small pins have good response and less vibration but tend to be less durable than big pins.

 

[standupguy619]

if you think a 650 motor is better your crazy! haha ive had a 95 for a while and the only problem i've ever had was the front crank bearing goin out and that's common with a 750's 12 pound flywheel.