TS Gearbox Rebuild - EB Spares Synchro Hubs? - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
(Post Link) post #1 of 2 Old 20-11-05 Thread Starter
Status: -
AO Member
Join Date: Oct 2002
Location: Auckland, New Zealand
Posts: 17

Member car:

Alfa 75 TS

TS Gearbox Rebuild - EB Spares Synchro Hubs?

I am finally ready to assembly my gearbox after four months waiting for
a part.

I bought a new synchro hub from EB Spares, trouble is instead of nice
sharp teeth (to assist engagement) it has little flats. See pic, Alfa on left ,EB Spares on right.


To me this seems dumb, as the flats can baulk on the teeth on the gears.

Has anyone used them before? At the moment it is placed at 3-4 on the gear assembly, but it is very tight and the synchros actually rub
slightly on the hub, whereas the alfa ones on 1-2 are slightly loose.


Any advice appreciated as I don't want to get it in to find a crappy

I ran out of $$$ to lighten the gears, but I did replace the worn
synchro teeth on each gear (1st and 2nd) with fresh ones out of an old
Alfetta gearbox (4th and 5th gear). I made a tool to press the synchro
teeth off the gears and then pressed the replacements back on.

Tomorrow I'm doing the measurements for pinion height so I can machine the spacer correctly.

1987 Alfa Romeo 75 Twinspark

1988 Alfa Romeo 75 Twin Spark
1994 Toyota Celica GT-Four Group A
NZAlfa75 is offline  
Sponsored Links
Status: -
AO Silver Member
ally's Avatar
Join Date: Nov 2003
Location: United Kingdom
County: Perth and Kinross
Posts: 1,738
Images: 2
Idea Re: TS Gearbox Rebuild - EB Spares Synchro Hubs?

Having just rebuilt a couple of boxes, I can say for sure that it is normal. The tightness you speak of seems quite alarming when reassembling, but I have never noticed any resultant negative performance.
I just wish that EB or Alfa UK any of these outer synchro hubs in stock when I did the last one- it would have saved me having to strip it again to stop it jumping out of 3rd!
Seems like there's no one else here who's rebuilt tansaxles if lack of feedback to my previous thread was anything to go by...

[SIGPIC][/SIGPIC]Drive sideways- life's too short not to

Slip-sliding my way through winter. On four wheels and two.
ally is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 75, RZ, SZ

gearbox , hubs , rebuild , spares , synchro

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

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

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome