OK listerati, let me know where I'm wrong here.
Measured the '6 and the '3 and it appears that....
the caliper bolt pattern is the same - 3.5" on center
caliper bolt to edge of the rotor (and brake pad) is about 1/8" less for the
'6,
rotor bolt pattern is the same,
rotor offset is the same,
depth of the rotor is 1/8" less for the '6,
haven't looked at the dust plate bolt pattern.
It would appear that TR6 calipers will fit a TR3 but you will have to use
TR6 rotors and probably the TR6 dust plate. Also believe that if you use
later TR6 calipers, you'll have to use the shouldered bolts from the later
cars.
If this is the case you can use the 4 pot calipers from the Toyota 4x4 but I
have no idea what would be needed for the threads on the required short
piece of adapter brake pipe - any help here?
Andy
-----Original Message-----
From: owner-triumphs@autox.team.net
[mailto:owner-triumphs@autox.team.net]On Behalf Of Christopher Ball
Sent: Tuesday, May 23, 2000 3:32 PM
To: 'TRs Roadster list'
Subject: TR3a/b brakes
So - besides debating about buying new brake calipers for a TR3a, (which are
largely unavailable), have any of you replaced them with a modern unit,
later Triumph or otherwise. Will the 4A calipers go on there as a bolt up
for example ? Mine are so pitted that I'll need a full rebuild and sleeving,
and so I'm thinking about just, gulp, buying new stuff.
I'll check my email for replies when I get back from confessional.
Thanks folks.
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