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Kirkham Motorsports

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  #21 (permalink)  
Old 01-14-2017, 04:59 PM
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Quote:
Originally Posted by Scotchman View Post
Will the Carter pump work with a one way line to the carbs ? I do not have a return line to the gas tank.

- Yes. No return line necessary


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  #22 (permalink)  
Old 01-14-2017, 07:46 PM
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I use a carter in-line 15 psi fuel pump for my NOS system, stepped down to 10psi with Holley regulator and safety cut-off at 4.5 psi. If my Holley Blue ever quits again, I can steal the Carter to get me home. (Or call AAA.)

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  #23 (permalink)  
Old 01-15-2017, 09:49 AM
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Depends how nostalgic or original you want to make it.

Like my SW 240A pumps, gutted and bored out to accommadate two modern electric inline fuel pumps:



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Greg
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Old 01-15-2017, 08:33 PM
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I can sympathize Scotty. Thinking about changing mine too. I have a Holley red back at the tank and a mechanical pump (fed by the electric pump, so in series, with a return line). The electric pump sounds like a blender. If my fuel level is below 1/4 tank I see some pressure drop if I really get into the throttle. So either the pumps aren't keeping up or I have some clogging in the filter. In any event I can't see the electric pump lasting too long based on how it sounds.
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Old 01-16-2017, 10:05 AM
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Mike, don't you have FI on that monster? I've always thought they required considerably higher pressure than carbs. If the electric pump can generate the high pressure, wouldn't then running through a mechanical pump lower that pressure by restriction? My confuzzzion runs rampant.
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Old 01-16-2017, 10:07 AM
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No mine is carburetor - single quickfuel 780 on a port matched edelbrock performer RPM
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Old 01-16-2017, 12:23 PM
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Old 01-16-2017, 03:48 PM
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Those Holley blue and red pumps (rotary vane) always are loud, especially when dead headed. They don't like it (noise, short life, vapor lock) and neither do most electric pumps. I am running a Holley gerotor with a bypass on it. Runs very quiet. https://www.summitracing.com/parts/hly-12-125/overview/

A good mechanical pump should work fine too with a carburetor. Just depends upon what poison you want.
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Old 02-02-2017, 07:38 PM
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Gordon Levy hooked me up with a 345 lph in tank pump, for Mustang tank. Supports 600 hp, runs cooler and quieter. Cannot speak to reliability, only about 1500 miles on mine.
Good luck
Mark
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Old 02-03-2017, 05:40 AM
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I have a Holley Gerator type pump as well. 5+ years and no problems. Went through 2 vain type pumps before I tried this one. It feeds a Quikfuel 780 too.
You can still hear it but much quieter than the old red ones.

Tim
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Old 02-04-2017, 07:32 AM
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The original 427's, including S/C and Race cars all ran mechanical fuel pumps. The twin SW pumps fitted to the S/C and Race Cobras were only for priming and reserve.
If mechanical pumps were good enough then, there's no reason to think that they're not good enough now.

Paul
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Old 02-04-2017, 10:44 AM
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Quote:
Originally Posted by keezling View Post
If you do go mechanical, make sure you have a eccentric cam on the cam sprocket
+1

I know that mine doesn't have the cam eccentric. In many rebuilds that are planning on using an electric pump, the eccentric is not installed on the cam.

I installed a Walbro in-take retrofit pump from TanksInc. Quieter than external but still noticeable.
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Old 02-04-2017, 11:48 AM
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My 289 was vapor locking in hot weather due to thermal soakback after starting after sitting for a short time and a very knowledgeable friend that specializes in the original Thunderbirds ( my previous car) suggested an inexpensive Carquest pump back near the tank. I switch it on for startup when cold to fill the bowls and leave it on longer if the engine is hot. If it ever vaporlocks I can switch it on to clear it. Haven't had any problems since, so far.
The Carquest pump is an Airtex E8016S and is available many places for about $25.
https://www.ctci.org/gilsgarage/VaporLock.php

Last edited by jon@harrison.ne; 02-04-2017 at 12:05 PM.. Reason: Add information
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Old 02-04-2017, 08:23 PM
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I've had a blue Holley for a while now....sometimes it does get noisy, but it does go away.
Mine is dead headed, so with a return it may be quieter.
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Old 02-05-2017, 10:18 AM
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Quote:
Originally Posted by CHANMADD View Post
I've had a blue Holley for a while now....sometimes it does get noisy, but it does go away.
Mine is dead headed, so with a return it may be quieter.
Funny, I have a Blue Holley, sometimes it's real noisy and other times very quiet, depends on how often I change my hearing aid batteries!

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