10b vs. 11a

[rjp]

would a 11a transmission fit a10a clutch, and drive line.?  And what else could be exchanged 

[Steve Braverman]

The 10A clutch was notoriously problematic. The series 11 clutch was much improved, and my father installed one in his 10B.

[PFitz]

Ser 11 clutch disc and trans use the same hub spline and trans housing, so they might be able swap to a Ser 10. But, to convert the 10A ridged clutch disc  to a later flexible disc, there are more parts needed. Check the Ser 10 parts book's engine/clutch section and transmission section. It lists what is needed to make the change.

 

Note: Some of the early Ser 10 flexible clutch discs have a steel spacer ring riveted on to make them thicker to match the release distances of the early ridged disc clutch pressure plates. The later Ser10 & 11 discs are thinner and may not work within the proper adjusting range of the earlier pressure plate. The thicker flexible discs are rare, but every once in a while I get one of those in to rebuild. You can tell by looking at the edge of the disc and you'll see the double layer of steel. Also, some were done with solid, flathead rivets, not the tube rivets of the later discs.

Pix of an early Ser 10A thicker flexible disc below.

Paul

Edited February 25, 2019 by PFitz (see edit history)

[rjp]

Can one tell by the bell housing if it is a 10 or 11? is there a number on the side?

[SD Franklin Service Statio]

1 hour ago, rjp said:

Can one tell by the bell housing if it is a 10 or 11? is there a number on the side?

You can run the block number, but otherwise you can tell by the transmission cover

[rjp]

OK Thanks Iam sure ill have more ?s later