3 clutch overdrive clutch pack

[plcguru]

I want to modify my overdrive clutch piston so i can use 3 clutch disks instead of the factory 2.

How much should I take off the piston? I've read 0.070in and 0.080in but I'm not sure which is correct. It's currently 1.720 inches tall... what should it be?

Thanks

 

[turbo nasty]

Right out of "strength the 200" in the stickies at the top


*3+4 CLUTCH
4th clutch, a 3 clutch piston should be used (2 is stock). A stock cut to .070 will work just fine.
4th gear clutches of any brand will work. We have been using the Alto Red Eagle clutches with very good luck.

 

[Lee Thompson]

size

Piston should be 1.630 thick, the thickness of one friction + clearance on each side of friction

 

[plcguru]

Well... I got a little too aggressive and ended up with 1.621 instead of 1.630 :redface:
Is it a throwaway now or can I still use it?

I know... measure twice cut once...

 

[Lee Thompson]

Ok

Use it.

 

[plcguru]

ok, I'll use it then. Thanks

 

[chris718]

You should be ok.I think it is much easier to turn down the edge of the pressure plate for the snap ring to get clearance.I may start doing this.