Actually the coupler is splined all the way around except for two flat areas the width of the roll pin (about 3 splines on each side). Inserting that pin with the transmission already assembled is a real joy BTW. It can be done, but I wouldn't make it a regular practice. FWIW: My transmission is finally back in the car WITHOUT binding the clutch disc. Some guys from the railroad came over to help "wig it in" (technical Southern procedure akin to making sausage -- don't watch). Apparently it paid to criticize their no-show promises in an international DeLorean news group. I'm too tired to describe the event in detail tonight -- will post another message tomorrow after all the other crap removed to access it has been re-assembled. Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, "darryl" <darryl@xxxx> wrote: > Exactly right. Its the coupler on the other end of the input shaft that will fail, in 3rd gear on a freeway on-ramp 100 miles from home on a Sunday night (trust me on this). It is very soft material and is only splined in 3 places, not all the way around. I suspect it functions like a shear pin or fuse, failing in order to protect more expensive parts. I had a new one made by an aerospace machine shop, heat treated to bulletproof. I also had the lead removed from my right foot. 300HP is fun, but it can be costly.... > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/