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leather vs plastic
#1369397 Thu Jul 16 2020 11:04 PM
Joined: Jan 2020
Posts: 695
D
'Bolter
I'm pretty much a traditionalist when it comes to my Model B's but, with this last calamity stale ethanol. A recently rebuilt carb about a year ago. Which accelerator pump, leather or plastic?


Currently making 1954 3100 better than new and Genetics
Re: leather vs plastic
Doc.Hall #1369416 Fri Jul 17 2020 12:59 AM
Joined: Jan 2000
Posts: 451
S
'Bolter
My B still has the leather, it's gotta be at least 10 years or more with that same accelerator pump. smile And that's running nothing but ethanol gas for the last 5 years since moving to northern AZ (that's all there is here). Last carb rebuild was 2015 but that kit's accelerator pump was dried out leather that had shrunk too much. So I reused my old one. thumbs_up

Last edited by Skooter; Fri Jul 17 2020 01:04 AM.

2 Chronicles 7:14

1952 Chevy 1/2-ton 3100
Dalton Highway survivor
www.truckwithaheart.com [flickr.com]
Re: leather vs plastic
Doc.Hall #1369435 Fri Jul 17 2020 03:03 AM
Joined: Mar 2010
Posts: 9,759
5
'Bolter
Leather has some remarkable properties which are hard to beat with synthetic materials.
An example that fascinates me is that pressure washer pumps use leather seals on the ceramic pistons because they can put up with the extreme heat when a dummy leaves the pump running with the spray gun off. This creates a lot of heat which synthetic materials cannot withstand as long as leather.

Re: leather vs plastic
Doc.Hall #1369436 Fri Jul 17 2020 03:09 AM
Joined: Mar 2014
Posts: 2,465
J
'Bolter
Leather will last longer, however some of the plastic ones I looked at 2 years ago were pretty decent and might actually be ok. I can't offhand recall where I bought them...may have been the place specializing in Quadrajets, but they were better than the others I've seen.


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: leather vs plastic
Doc.Hall #1369459 Fri Jul 17 2020 12:35 PM
Joined: Nov 2002
Posts: 2,224
C
Carburetion specialist
Leather is better!

When a new leather pump is installed, it should have a few drops of light machine oil applied before installation. And then use a sleeve to hold the leather in place during the installation so it doesn't turn upside down.

When an old leather pump is removed (if the leather has not turned upside down from poor installation) a few drops of light machine oil will generally rejuvenate the leather and it will still be superior to the artificial pumps.

Of course, even a leather accelerator pump won't turn the Rochester B into a real carburetor! nanner

Jon.


Good carburetion is fuelish hot air
The most expensive carburetor is the wrong one you attempt to modify
If you truly believe "one size fits all" try walking a mile in your spouse's shoes!
[image]http://www.thecarburetorshop.com/Avatar.jpg[/image]
Re: leather vs plastic
Doc.Hall #1369639 Sat Jul 18 2020 06:51 PM
Joined: Jan 2020
Posts: 695
D
'Bolter
Thanks guys, I have been called a Model "B" Nazi but recently I'm more tended to agree with Jon. Model "B's" are kinda like the bumble bee's....not supposed to fly. Ed

Last edited by Doc.Hall; Sat Jul 18 2020 06:53 PM. Reason: additional info

Currently making 1954 3100 better than new and Genetics

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