[TR] Question on Fuel pumps TR3-4

[Andrew Uprichard]

I have restored a TR3 each year for the past 10 years or so and think I bought a Moss pump once.  I didn’t keep the car long enough to say if it lasted, but I have a lot of faith in Albert Runyan a tTRF when he says the quality is reflected in the price.  Provided the lever is not worn, these pumps are easy to rebuild and the kit is not expensive, so this is the route I normally go.

 

For the 2 cars I kept, I got a blanking plate and opted for a facet pump.

 

Andrew Uprichard

Jackson, Michigan

 

From: Triumphs [mailto:triumphs-bounces at autox.team.net] On Behalf Of Michael Burdick
Sent: Wednesday, February 21, 2018 10:01 PM
To: Triumph Mail List
Subject: Re: [TR] Question on Fuel pumps TR3-4

 

The pump my dad had did not have a cast cam lever like those in your picture. If memory serves, it was several ~1/16” thick pieces layered together to make up the ~1/4” thick lever that was held in the body of the pump with a roll pin.  It did have a priming lever though.

 

 

On Wed, Feb 21, 2018 at 7:03 PM Don Hiscock <don.hiscock at gmail.com> wrote:

This exact thing can happen if the cam lever is inserted with the wrong end of the lever bearing on the cam lobe.  Hard to imagine if the lever is inserted correctly.  Might be worth it to double check that the reinstalled pump has its lever the right way.  The long flat surface on the lever should bear against the cam.

 

Here's a worn lever on an original AC pump from being positioned wrong-side-against-the-cam.  Compare the tip wear to a standard lever, and see the bearing surface opposite that worn corner.  Note:  I won't tell ya who did this, but they're suitably embarrassed (and it wasn't me) :)

https://photos.smugmug.com/photos/i-XQ7d3fM/0/f3e2e8a6/X3/i-XQ7d3fM-X3.jpg

 

 

On Wed, Feb 21, 2018 at 12:31 PM, Michael Burdick <burdickm at mindspring.com> wrote:

My dad had a reproduction pump on his TR2 a few years ago, added after the engine was rebuilt under the assumption that newer is better.  One day not too many thousands of miles later, the car started, but would not stay running more than a few seconds.  After some diagnosis, the pump was removed and the arm that rides on the camshaft was discovered to be worn down to the point where the lobe on the camshaft could no longer move the arm.  He dug the original pump out of a box in the basement, reinstalled it, and has been trouble free ever since (at least with respect to fuel pumps)*.  I'm not sure if Moss is selling that exact pump, but I think that the axiom "you get what you pay for" may be in play here.

 

Good luck with the sale,

Mike

 

* I don't want to think about where the metal missing from the pump arm ended up, but so far he hasn't had any issues...

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/triumphs/attachments/20180222/4fe13ad1/attachment.html>