[TR] TR4 brake drum problem

[Carl TR]

Searching the archive:  (sorry for the blank email)
Re: Alfin drums - TR3 application
from [R John Lye] [Permanent Link][Original] 

To:  rgs03 at health.state.ny.us, Triumph owners list <triumphs at autox.team.net>

Subject:  Re: Alfin drums - TR3 application 
From:  R John Lye <rjl6n at uva.pcmail.virginia.edu> 
Date:  Fri, 25 Oct 96 10:21:49 EDT 

On Oct 25,  9:07am, rgs03 at health.state.ny.us wrote:

> I've heard this as well. I was told that it was the TR6 that the 240Z
> drums fit. May be the TR3 also, which would mean they would fit a bunch
> of TRs. I have a '71 240Z and even have a spare (brand new) aluminum
> drum for it. If there's enough interest I could go to the garage and
> do a test fit.

I've got a set sitting on my shelf, so you don't need to do it.
HTe 240-Z drums will fit TR's with 9" rear brakes.  This includes
most TR-4's, 250's and 6's and some TR-3's  TR-2 and some TR-3's
had 10" rear drums.  The Datsun aluminum drums need to have the
center hole enlarged a bit, but the bolt pattern is the same.  If
you want to retain those little drum hold-down screws, the holes 
for them will need to be drilled and countersunk as well.  The
backing plates of some brakes will foul the inner edge of the
drum, so the drum may need to be trimmed there, too.  Test this
first, though, as they don't always need to be trimmed.

later,


John Lye

rjl6n at virginia.EDU
http://avery.med.virginia.edu/~rjl6n/homepage.htm




-----Original Message-----
From: triumphs-bounces at autox.team.net
[mailto:triumphs-bounces at autox.team.net] On Behalf Of spook01 at comcast.net
Sent: Saturday, July 17, 2010 12:54 PM
To: Brad Kahler; Triumphs
Subject: Re: [TR] TR4 brake drum problem

I saw some beautiful finned aluminum brake drums on eBay recently for the
rear of the tr3.  The seller said they were off a 240z datsun.   Does anyone
know how to mod a pair of these drums to fit the tr3?

Sent from my Verizon Wireless Phone

----- Reply message -----
From: "Brad Kahler" <brad.kahler at 141.com>
Date: Sat, Jul 17, 2010 09:48
Subject: [TR] TR4 brake drum problem
To: "Triumphs" <Triumphs at autox.team.net>

Problem solved.  The drum is definitely not a Triumph drum.  Probably an MG.

Stupid me forgot I had a TR4 sitting in the corner that I could pull a
drum off of.  Definitely a difference in drums.

So now to get the Datsun 240Z drums modified to fit and I'll move onto
the next problem.

Brad


On Sat, Jul 17, 2010 at 9:11 AM, Brad Kahler <brad.kahler at 141.com> wrote:
> Just ran into a problem that has me perplexed.
>

>
> The only thing I can think of is the brake drums had to have come from
> some other Triumph car, like possibly a Mayflower.

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