[TR] TR4 Investigating replacing the Armstrong lever shocks with telescopic rear shock conversions

Peter Ryner pryner at outlook.com
Sun Dec 6 12:08:15 MST 2020

Agree with Randy,
Check the shock mounts.  Had the same problem on my TR3.  Would get noise on bumps and couldn't fine the problem  Finally got loose enough that I could move the shock.  Mount holes were rounded out by then.  ISTR that there are no lock washers on the mount bolts.

From: Triumphs <triumphs-bounces at autox.team.net> On Behalf Of Randy and Valerie DeRuiter
Sent: Sunday, December 6, 2020 1:02 PM
To: Will Daehler <will.daehler at gmail.com>; triumphs at autox.team.net
Subject: Re: [TR] TR4 Investigating replacing the Armstrong lever shocks with telescopic rear shock conversions

Hi Will-

Moss-Europe still shows the kit for the TR2-4 live axle cars.

It seems a bit involved with brackets needed to be welded to the differential axle tubes.

A couple of thoughts on the rattle - I'd check the shock links very carefully as one step.  The rubber inside the link can perish so you can get a rattle even though the link looks ok.  The number one problem I had was the lever shock mounts would come loose and the shock would move a bit creating a noise.  Those bolts are hard to access, some use a socket headed bolt to get better torque on them.

If you are convinced its the shocks, you could test the theory by removing them and driving around for a while - the car will bounce more but if it still rattles it means the shocks weren't the problem.  I had a rattle from the muffler hitting the frame which might be a possibility.


From: Triumphs <triumphs-bounces at autox.team.net<mailto:triumphs-bounces at autox.team.net>> on behalf of Will Daehler <will.daehler at gmail.com<mailto:will.daehler at gmail.com>>
Sent: Sunday, December 6, 2020 10:34 AM
To: triumphs at autox.team.net<mailto:triumphs at autox.team.net> <triumphs at autox.team.net<mailto:triumphs at autox.team.net>>
Subject: [TR] TR4 Investigating replacing the Armstrong lever shocks with telescopic rear shock conversions

When going over bumps in my TR4 I have quite a rattle from the right rear area of my car.  I have poked around by the axle, and thought I have fixed the problem a couple of times.  I have replaced the springs and refilled the Armstrong shocks.  I have poked around. While looking through my Moss catalog I noticed the kits for replacing the Armstrong shocks with these brackets that you could mount shock absorbers to. But the kits are NLS.  No Longer Supplied.  I was wondering why the kits  were discontinued.  It could have been that they caused damage to the frame, or just didn't work.  I was hoping somebody had any first-hand knowledge or experience on this topic that they could discuss. I wonder if the racing group all have custom and proprietary set ups.

Will Daehler

63 TR4
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