Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 03-24-2018, 07:45 PM   #1
35ragtop
Senior Member
 
35ragtop's Avatar
 
Join Date: Dec 2010
Location: Gold Coast , Australia
Posts: 208
Default Synchro Ring Clearances

Hi Guys,
I'm searching for a noise in my 3 speed transmission and have found that the brass synchro rings seam to have excessive clearance between the neighbouring gear.
The front ring (1.) has .0935" and the rear (2) has .0755"

Is this adjustable? I cant seam to find any reference to it in Mac VP's wonderful book so it may not be an issue. I can easily move them with my finger.

Any suggestions appreciated.
Attached Images
File Type: jpg trans.jpg (68.2 KB, 64 views)
35ragtop is offline   Reply With Quote
Old 03-25-2018, 06:40 AM   #2
ponymare
Senior Member
 
Join Date: Sep 2014
Posts: 119
Default Re: Synchro Ring Clearances

The brass syncro rings have tiny thread like ridges on the area that runs on the gear taper. When new the ridges are sharp, after wearing down they will get loose where you stated, that will cause hard shifting a little later on.
ponymare is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 03-25-2018, 07:04 AM   #3
flatheadmurre
Senior Member
 
flatheadmurre's Avatar
 
Join Date: Apr 2015
Location: Sweden
Posts: 2,926
Default Re: Synchro Ring Clearances

When that gap is zero the syncronizers are worn out.
flatheadmurre is online now   Reply With Quote
Old 03-25-2018, 10:32 AM   #4
rotorwrench
Senior Member
 
rotorwrench's Avatar
 
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 11,332
Default Re: Synchro Ring Clearances

Vac VPs recommendations are .060" to .080. Here is a link.
https://www.fordbarn.com/forum/showt...3599&showall=1

The grooves in the tapered face also need to be there. Some repros are smooth and they need those grooves. Slot dimensions have to be good as well. Some of the new stuff is crap.
rotorwrench is offline   Reply With Quote
Old 03-25-2018, 03:11 PM   #5
35ragtop
Senior Member
 
35ragtop's Avatar
 
Join Date: Dec 2010
Location: Gold Coast , Australia
Posts: 208
Default Re: Synchro Ring Clearances

Thanks everyone for straightening this out for me.
35ragtop is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 03:08 AM.