There's a bevel on the outer part of the steel liner. When you don't see it
they're cut too much.
The later brakes will fit an early car with modifications to the backing
plate and aluminum drums cool down faster than steel drums.
Mike
----- Original Message -----
From: "Ross Eddington" <reddingt@pobox.une.edu.au>
To: <datsun-roadsters@autox.team.net>
Sent: Monday, April 01, 2002 8:14 PM
Subject: rear brake drums: a few questions
> A few questions about the rear brake drums, namely about the
> differences between the cast iron and later finned alluminium ones
> (67.5-70.)
>
> (1) Do these have a scrap thickness: IE: how to tell if they are no
> longer safe?
>
> (2) do the later alluminium ones have any performance advantages, or
> conversely, are they worse in anyones opinions.
>
> (3) are they interchangeable?
>
> thanks for any advice, opinions or comments
> --
> Ross Eddington
>
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