In a message dated 6/29/03 1:37:34 PM Eastern Daylight Time,
sdtilton@yahoo.com writes:
>
>
>
> Hey guys,
>
> I've had some old Datsun 240Z finned aluminum brake drums in my possesion
> for a
> number of years.
>
> I never got around to modifing them to fit on one of the TRs (4 0r 6)
>
>
> I actually thought I'd just break down and go buy new ones that were
> machined
> to fit the TR.
>
>
> Being a non-mandatory repair (the cast iron TR drums work fine afterall)
> that
> plan also got sidetracked.
>
> So anyway, I finally had an opportunity to put these suckers up on a lathe
> and
> modify them. I opened up the center hole to fit the Triumph hub. I kept it
> very close so the hub should center the drum and I won't bother with the
> little
> screws.
>
> I also enlarged the groove around the rim to allow it to wrap around the
> triumph back plate.
>
> I thought I was all set until I went to fit them up . . .
>
> Turns out the outer edge of the brake shoes are actually bottoming out on
> the
> inside face of the aluminum drum before it is seated all the way against the
> hub.
>
> BUMMER.
>
> I can see that the Datsun drums actually have a circular recessed section
> machined about .070" into the inside face of the aluminum drum.
>
> I can only guess that if this recession weren't there. . . they'd fit okay.
> Maybe the new drums that can be bought pre-machined for the Triumph
> application
> don't have this recession.
>
> So I guess I could look into getting a thin spacer made to go between the
> drum
> and the hub and fill this recessed area.
>
>
> I was wondering if anyone who had fit Datsun drums to their car had to go
> through the
> same thing
Scott,
I have never had this problem with Datsun drums. Are you certain that the
brake shoes are causing the problem? Aside from the mods you mention, I have
always found it necessary to enlarge the holes for the wheel studs.
Rich Rock
Pottstown, PA
/// triumphs@autox.team.net mailing list
/// or try http://www.team.net/cgi-bin/majorcool
/// Archives at http://www.team.net/archive
|