General Category => Engine & Transmission => Topic started by: Red on February 20, 2013, 07:15:25 AM

Title: Stud
Post by: Red on February 20, 2013, 07:15:25 AM

Hey yall,What size and thread is the stud on the top of the cylinder that goes to the motor mount bracket?

Title: Re: Stud
Post by: pd on February 20, 2013, 08:05:52 AM

I think I have a 3/8-16 x 3/4 " bolt in there . Mine never had a stud , that I can recall . But , others will chime in , I'm sure .

Title: Re: Stud
Post by: Red on February 20, 2013, 08:11:11 AM

on mine 3/8 nut was too big and 5/16 too small

Title: Re: Stud
Post by: pd on February 20, 2013, 08:12:49 AM

I'll check mine today and let you know for sure just what I have in there .

I know that some of the studs had USS threads on one end and metric on the other . The carb mount studs cone to mind .

Title: Re: Stud
Post by: oil-lamp on February 20, 2013, 08:20:50 AM

It could even be metric or a old thread pitch that's not used anymore.  :-X

Title: Re: Stud
Post by: Red on February 20, 2013, 08:23:07 AM

I didnt know if someone just put something in there or if the one in my cylinder was original. Its an M motor

Title: Re: Stud
Post by: Mike Sal on February 20, 2013, 10:43:41 AM

I'll look when I get home.  I had assumed it was a fine thread 3/8 nut (it's a longer than normal nut), but it might me that goofy british thread like they use on the axles.
Mike Sal

Title: Re: Stud
Post by: pd on February 20, 2013, 06:09:48 PM

Red ,

I checked and I do have a 3/8-16 x 3/4" bolt in that hole .

Pete . :)

Title: Re: Stud
Post by: RickS on February 20, 2013, 06:17:54 PM

Mine are studded with 3/8-16 in cylinder and 3/8-24 on the mount side.