post #1 of Old 05-07-2013, 07:50 PM Thread Starter
sundownbrown
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1985 CJ7 
 
Join Date: Jun 2009
Location: San Antonio
Posts: 114
high performance fuel pumps

What kind of high performance fuel pumps do yall have on your straight 6's? Thanks

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post #2 of Old 05-07-2013, 08:06 PM
firemanjim7
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1983 CJ7 
 
Join Date: Dec 2010
Location: Giddings
Posts: 152
I'm pretty sure unless your running a fuel injected system a stock manual pump will deliver enough fuel to a whatever you do to you 258. Most of the time it delivers too much. That's the reason for the bypass fuel filter.

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post #3 of Old 05-08-2013, 04:49 AM
BagusJeep
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1981 CJ7 
 
Join Date: Jul 2009
Location: Bali
Posts: 5,229
If your pump delivers more than about 6psi then even with the 3 way fuel filter and tank return you are capable of overwhelming the carb's inlet valve.

The standard mechanical pump is well up to the job, especially with the filter fitted.

Some members fit strong electric pumps but after a few feet then install fuel pressure regulators. Seems a bit of a waste to me.

Puthijeep has an electric pump, it is made by Denso and goes clunk, clunk, clunk. It must have cost $10.

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1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
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post #4 of Old 05-08-2013, 06:56 AM Thread Starter
sundownbrown
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1985 CJ7 
 
Join Date: Jun 2009
Location: San Antonio
Posts: 114
Thanks for the respnses, maybe my carb is the issue
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post #5 of Old 05-08-2013, 09:28 AM
bkeese
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1949 CJ3A 
 
Join Date: Nov 2010
Location: Clarksville
Posts: 595
If it is a bbd then you answered your own question.

1985 CJ7 - total customization underway, Sublime green and Plum crazy purple, Ford 9", 258 w/ Holley 475
1985,93 CJ7,YJ - L98 TPI Vette motor, Atlas twin stick, Dana 60s front and rear, Arbs, 39.5 Swampers
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post #6 of Old 05-08-2013, 11:19 AM Thread Starter
sundownbrown
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1985 CJ7 
 
Join Date: Jun 2009
Location: San Antonio
Posts: 114
what is a bbd?
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post #7 of Old 05-08-2013, 04:31 PM
7179CJ5
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1979 CJ5 
 
Join Date: Mar 2011
Location: Gibson
Posts: 358
bbd carter carb?
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