Big Nut on Engine backing off

[James Michael]

Hi there,
On my GSXR 1000 motor, the big nut that bolts the drive gear to the shaft coming out of the transmission keeps loosening on me. I am torquing it to 110 ft-lbs (I think the manual calls out 95 ft-lbs) so it is close to the spec.
Any ideas? Have others had this problem? In 2 sessions, I can wiggle the drive gear whereas when I first torque there is no wiggle. I put anti-sieze on the threads before torquing to ensure a good clamp up force.

Thanks,
James

[jchracer]

Richard at Rilltech ( http://www.rilltechracing.com ) sells a splined tab-washer. Once you bend over the ears, virtually no chance that the nut will back off. Highly recommended.

[JakeL]

+1 ditto that, excellent solution.


-Jake

[James Michael]

Thanks Guys! Happy Racing!