[TR] Synchros

William Pugh anabil007 at comcast.net
Mon Aug 6 11:08:45 MDT 2012


For what is it worth, I know, not much.   Bad Syncros were the Main reason
Herman stopped doing Trannies, and started inventing his conversion kit b&


On Aug 6, 2012, at 2:31 AM, Cosmo Kramer <tr4a2712 at yahoo.com> wrote:

> Hi Aribert Neumann & list!
> I would be VERY leery of purchasing the synchros
> listed by TRF's  for TR4A & TR6's. The reason is that, it was posted many
> years ago, on this list, that the TR4A & TR6 synchros where slightly
> different. You may be lucky that these do work in your tranny, or not, but
> that's a chance you'll have to take AFTER you try out the rebuilt TR6
tranny.
> Now, if it works, GREAT! BUT!, If it doesn't, then you'll have to redo
> everything with the right synchros. I'll check in my "Cosmo TR4/A E-mail
> Repair manual" to see if it is there as a reference, or you can check
yourself
> if you go to:
> http://tinyurl.com/6c647jh
>
> It would most likely be under
> Gearbox\Standard.
>
> Now the TR4A synchros came out before the TR6's were even
> made. The TR6 trannys are 'SO POST TO BE" the same trannys, but the TR6's
did
> make changes through the many years of production. '72 to '73 was the
biggest
> amounts of changes. So may be the synchros that are different for the TR6's
> where never separated, or someone thought that because the TR4A & TR6
trannys
> were the same, then so would be the Synchros?
>
> But may be TRF made a
> correction since then?
> -----------
> Relating to :
> Message: 8
> Date: Sun, 5
> Aug 2012 07:58:36 -0500
> From: "Greg Lemon" <glemon at neb.rr.com>
> To: "aribert
> neumann" <aribertn at gmail.com>, <triumphs at autox.team.net>
> Subject: Re: [TR]
> quality synchros currently available?
>
> The Roadster Factory claims to check
> theirs, and that they are higher
> quality, if you have a late GT6 they are
> really cheap.
>
> http://trf.zeni.net/allsummerb/16.php?s_wt=1366&s_ht=768
>
> As an
> aside when I rebuilt my tranny I used new synchro cups, I had trouble
> with
> 2nd gear, I ended up having a shop repair it, before I did that I took
> it
> apart myself and had looked at the 2nd gear synchro with a former BL
> mechanic
> and we agreed it was out of spec (after maybe 2500 miles). He
> suggested I use
> the best of what came off before the rebuild, suggesting
> that 4th gear
> synchros didn't see much wear.
>
> Anyway, that is what I had the (local, non
> specialist) tranny shop use in
> rebuilding the tranny, the guy thought I was
> crazy using the old part,
> apparently was not familiar with the sometimes poor
> quality of certain
> reproduction parts for old LBCs.
>
> Greg Lemon
> TR250
>

"Life is too short to drive boring cars"

Bill Pugh
1957 TR3 "Casper"p;
TS16765L
Wallace, CA
anabil007 at comcast.net


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