View Full Version : Nut Size

07-03-2012, 10:24 PM
What size is the nut thats inside the coupler that bolts to the tranny? MY shaft is 1" tried 1 1/4, 1 1/8 1 3/16 30mm 27mm. WHAT SIZE IS THIS THING:THANKS 1990 PROSTAR 190 351W 1:1 VELVET

07-05-2012, 03:47 PM
to all that looked @ this thread thanks for LOOKING I GOT IT OFF!

Table Rocker
07-05-2012, 04:00 PM
I would have posted the correct size, but I would have had to go out to the boat, take the coupler apart and then tried different sockets until I found the right size. I also have the ZF Hurth transmission, so I couldn't guarantee it would be the same. Count me as one who looked and didn't answer.

So, for future reference: What size was the shaft nut on a 90 ProStar 190 w/ 1:1 Velvet Drive?

07-05-2012, 08:17 PM
Table Rocker, Thanks 1 1/4". Got everything but the shaft, DIM said should have it on 7/11,12 hope so my boys are ready to get on the lake to be the HEAT.

Table Rocker
07-05-2012, 08:20 PM
Glad you were able to get it worked out. It doesn't sound like it takes much bend to be out of tolerance. Here's to running smooth on July 12th!

07-05-2012, 08:21 PM