Clutch sizes

[firemanmarc]

Just a simple question. What are the differences between the first generation and second generation clutches?? Is it just diameter and spline size?? Thanks, Marc

 

[Joseph Donnelly]

First gen is Sachs 13" diameter. Second gen 5 speed clutches are 12. 3" LuK with the same bolt pattern and splines (1. 25 x10). In my experience, the Sachs is a lot beefier, lasts much longer, holds more torque. First gen indexes on a lip at the outside of the flywheel. Second gen uses small bolt holes in the cover, first 3 threads cut out of the flywheel, and shouldered bolts.

 

[firemanmarc]

Thank you for the reply! The reason I ask is I am putting a Ford ZF 5 speed in my truck. Outfit in Montana that does Ford cummins conversions says I need to use earlier clutch. After what you say I am certain to put the First Generation clutch in. Thank you, Marc

 

[South Bend Clutch]

firemanmarc,



Well tests show that the plate loads and torque ratings say the contrary with the two clutches. I also believe the Luk is easier on the leg and smoother engaging. Bigger doesn't always mean better.



Peter

 

[firemanmarc]

Don't nesscarily want the biggest just the one that will work. Thanks and was just looking at your websire will be getting clutch from you!! MArc