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03-06-2024, 07:07 PM | #1 |
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Leather accelerator pumps
With the poor quality accelerator pumps currently found in carb kits, will a leather pump hold up with racing gas…renegade 112? 4gc on a super stocker. Thanks.
Ed |
03-06-2024, 10:47 PM | #2 |
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Re: Leather accelerator pumps
works with c11&12
capt
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Jack McCarthy 3609 STK "the Captain" |
03-08-2024, 03:15 PM | #3 |
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Re: Leather accelerator pumps
I have run leather for years with no problems.
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John Dinkel 3295 STK |
03-08-2024, 05:50 PM | #4 |
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Re: Leather accelerator pumps
The trick used to be to soak your leather pump cups in brake fluid to keep them soft, or to soften them up. I use viton pump cups NAPA number 2-4112 in all my carbs .Cost about $7.50 each.
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03-08-2024, 10:18 PM | #5 |
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Re: Leather accelerator pumps
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03-09-2024, 11:11 PM | #6 |
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Re: Leather accelerator pumps
I’m thinking the alcohol eats the leather up along with fuel pumps and carbs but with race gas no
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03-10-2024, 09:05 AM | #7 | |
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Re: Leather accelerator pumps
Quote:
Does the 4 GC use the same size pump as the Rochester 2 Barrel or is it the Dia. of the Q-Jet pump? Its been years since I've been inside one of those carbs. Have a Good Day. Respectfully, Henry Kunz 1534 H/SA Last edited by Henrys Toy; 03-10-2024 at 09:10 AM. |
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03-10-2024, 11:19 AM | #8 |
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Re: Leather accelerator pumps
All racing fuels contain Triethylamine.
They will kill the leather and even the Viton cups that usually come in the carb kits sold at auto parts stores. I recommend the use of cups sold by companies such as Quadarjet Power, Quadrajet Parts, and others. They sell cups that are resistant to the new generation of fuels and are made from either Butyl, EPDM, Neoprene, or Hypalon rubber. |
03-10-2024, 11:55 AM | #9 |
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Re: Leather accelerator pumps
Henry, the 4gc has a couple different sizes. The one I’m running (1966, 283/233hp) is 21/32” cup and the “long stem” pump. I’m not sure about the 2 barrel carb.
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03-10-2024, 03:30 PM | #10 |
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Re: Leather accelerator pumps
Not pitching for Cliff but he says his are alcohol proof.
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