Bill, I had the same problem. There is no thickness marking on the TR3A
rotors. I was lucky enough to find someone that would resurface them without
the numbers, it was a general repair shop so they weren't dependent on the
brake business, guess they felt thay didn't have that much to lose.
I seem to recall someone subsequently posting some references here with the
original thickness a while ago, but I can't seem to find it. (I only delete
messages that I will need, or so it seems)
Bob
----- Original Message -----
From: <bbrewer@qnet.com>
To: <triumphs@autox.team.net>
Sent: Wednesday, June 12, 2002 9:09 AM
Subject: TR3 Front Brake Rotor Thicknesses
> I took my TR3A front brake rotors in to be turned today, but they
said
> they have to have the factory specs before they can turn them. I couldn't
find
> the minimum thickness specifications in either the Haynes or the Bentley
> manual. The rotors have a bunch of crud caked on in the middle and perhaps
I
> can find a spec stamped there. I came straight from the brake shop to work
and
> haven't had a chance to clean up the back of the rotors to check.
> Can someone tell me the minimum spec for the brake rotors? Or perhaps
the
> original starting thickness? I believe that the Bentley manual says that
you
> can go .06 below that. Can someone tell me where to find it in a manual or
on
> the net? I might need that to prove it to the brake guys that claim that
it is
> a DOT requirement to know.
> The rotors mike out at .465 and .475. It sure looks like there is a
lot of
> meat left.
> TIA.
>
> Bill Brewer
> 1960 TR3A TS72747LO
> Tehachapi,
> CA
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