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Carter strip Mechanical pump #2538166
08/18/18 03:59 PM
08/18/18 03:59 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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I'm sure this question has been asked 100 times before, but how fast have you gone with this old pump? And how much power can it support (in your experience)?

I run one in my Challenger with 3/8" factory line, sender and tank, and honestly I really like the simplicity of this fuel system. Havnt raced it yet, but ran it hard through the gears a few times and never noticed any fuel delivery issues. Its a 505 w approx 550hp, 4 speed and 3.55's. I plan to throw a few more horses at it this winter (maybe get it closer to 600)and I'm guessing I'll be pushing it at that point...


2 kids and a dog
Re: Carter strip Mechanical pump [Re: TonyS451] #2538169
08/18/18 04:11 PM
08/18/18 04:11 PM
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Wichita
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GY3 Offline
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121mph, 3600 lbs. With 5/16 fuel line.

3/8 from pump to carb.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Carter strip Mechanical pump [Re: TonyS451] #2538183
08/18/18 05:24 PM
08/18/18 05:24 PM
Joined: Oct 2006
Posts: 89
sweden
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carter Offline
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sweden
512 with unknown hp and 3860 lb.
With 3/8" factory sender and fuel line and Carter M6903. It fell on its nos at finish line in 1/8.
Now running a CV Product fuel pump up

Re: Carter strip Mechanical pump [Re: TonyS451] #2538192
08/18/18 06:03 PM
08/18/18 06:03 PM
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Phoenix, AZ
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MoparBilly Offline
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Phoenix, AZ
Hyd. cam 440, Modern ported Stealth heads, 750 holley, stock 5/16 fuel line and stock tank, 3850lb 67 Belvedere. 11.23-123 With a 150 shot of nitrous. Carter pump fed both engine and plate, makes for a great street car.

8326443-img_8248-copy.jpg14379639_10154596229732112_644692425990414005_o.jpgMay 16 - Copy.jpg

"Livin' in a powder keg and givin' off sparks" 4 Street cars, 5 Race engines
Re: Carter strip Mechanical pump [Re: TonyS451] #2538210
08/18/18 07:16 PM
08/18/18 07:16 PM
Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50 Offline
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My D50 ran a best of 6.29 @ 108 in the 1/8 with the Carter mechanical pump and 3/8 fuel line and a AutoZone plastic fuel filter. Switched to a big MagnaFuel pump and -8 line and saw no improvement.


1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Carter strip Mechanical pump [Re: TonyS451] #2538243
08/18/18 09:11 PM
08/18/18 09:11 PM
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Posts: 6,591
Canton, Ohio
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Sport440 Offline
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That pump was failing om me about 520 HP. It is rated flow wise for more then that, but when you add in all the twists and turns, variables that's about it. Your there.... ,time for a upgrade now.

Re: Carter strip Mechanical pump [Re: Sport440] #2538271
08/18/18 10:27 PM
08/18/18 10:27 PM
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IN
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ahy Offline
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Type of fuel, temperature and usage are big variables.

An engine compartment mounted pump sucks the fuel from the back. If the fuel gets hot and boils, pump capacity does not matter. It won't pump anything useful sucking vapor.

Current pump gas is made for EFI systems and boils easily.

A suitable electric pump mounted in the rear where it is cooler often works much better vs engine mounted pump. It gets some pressure in the fuel before it gets into the hot engine compartment. That would be my suggestion.

Re: Carter strip Mechanical pump [Re: GY3] #2538470
08/19/18 11:06 AM
08/19/18 11:06 AM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Originally Posted By GY3
121mph, 3600 lbs. With 5/16 fuel line.

3/8 from pump to carb.


Cool!


2 kids and a dog
Re: Carter strip Mechanical pump [Re: TonyS451] #2538495
08/19/18 12:13 PM
08/19/18 12:13 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Moparbilly - cool car and nice set up. I wouldn't have guessed that pump would feed the nitrous too!

D-50 - that's moving for sure and I guess better safe then sorry when it comes to fuel delivery and your upgraded fuel system...But your before and after is a perfect example of the overinflated pump requirements that we often hear about.


2 kids and a dog
Re: Carter strip Mechanical pump [Re: ahy] #2538501
08/19/18 12:21 PM
08/19/18 12:21 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Originally Posted By ahy
Type of fuel, temperature and usage are big variables.

An engine compartment mounted pump sucks the fuel from the back. If the fuel gets hot and boils, pump capacity does not matter. It won't pump anything useful sucking vapor.

Current pump gas is made for EFI systems and boils easily.

A suitable electric pump mounted in the rear where it is cooler often works much better vs engine mounted pump. It gets some pressure in the fuel before it gets into the hot engine compartment. That would be my suggestion.


Good points, and I'm definitely not opposed to electric pumps. My car also has a fuel filter with a 5/16 return line to prevent vapor lock. At least that what the claim is. I havnt had any hard starting issues when hot, so could be working.


2 kids and a dog
Re: Carter strip Mechanical pump [Re: TonyS451] #2538520
08/19/18 01:02 PM
08/19/18 01:02 PM
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Posts: 6,591
Canton, Ohio
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Sport440 Offline
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Canton, Ohio
Originally Posted By TonyS451
Moparbilly - cool car and nice set up. I wouldn't have guessed that pump would feed the nitrous too!

D-50 - that's moving for sure and I guess better safe then sorry when it comes to fuel delivery and your upgraded fuel system..


.But your before and after is a perfect example of the overinflated pump requirements that we often hear about.



My before and after. purple cam 440, inconsistent 10.80,s and .90,s with the carter pump, switched to a electric pump, 10.40,s no other changes.

Re: Carter strip Mechanical pump [Re: Sport440] #2538531
08/19/18 01:29 PM
08/19/18 01:29 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Originally Posted By Sport440
Originally Posted By TonyS451
Moparbilly - cool car and nice set up. I wouldn't have guessed that pump would feed the nitrous too!

D-50 - that's moving for sure and I guess better safe then sorry when it comes to fuel delivery and your upgraded fuel system..


.But your before and after is a perfect example of the overinflated pump requirements that we often hear about.



My before and after. purple cam 440, inconsistent 10.80,s and .90,s with the carter pump, switched to a electric pump, 10.40,s no other changes.


Apparently that carter pump and/or system wasn't working for you. Were you experiencing stumbles? Also just curious, was it just the pump that you replaced, or were there other system items switched out as well?


2 kids and a dog
Re: Carter strip Mechanical pump [Re: TonyS451] #2538533
08/19/18 01:32 PM
08/19/18 01:32 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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The best test I know of for fuel system is to keep jetting the carb. up until it slows down in the 1/4 mile, if it won't you don't have enough fuel supply scope
On my old pump gas Duster I had to go to .120 needles and seats to be able to jet it rich enough to slow that car down in he 1/4 mile work up


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Carter strip Mechanical pump [Re: TonyS451] #2538539
08/19/18 01:37 PM
08/19/18 01:37 PM
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Canton, Ohio
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Sport440 Offline
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Yes with the carter strip pump I was experiencing some nosing over at the top end. When it would nose over it would run 10.9,s. When it didn't nose over, still felt like it was pulling, 10.8,s. Figured I would up grade to stop the nose overs at the top end figuring I could get Consistant 10,8,s. Well ended up getting consistant 10.47/10.50,s

Wow, wasn't expecting that, sometimes you can be starving for fuel and you Wont even know it. And yes Pump change only, nothing else. Thought I was just having some occasional fuel starvation nose overs.

Last edited by Sport440; 08/19/18 02:07 PM.
Re: Carter strip Mechanical pump [Re: Cab_Burge] #2538548
08/19/18 02:14 PM
08/19/18 02:14 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Originally Posted By Cab_Burge
The best test I know of for fuel system is to keep jetting the carb. up until it slows down in the 1/4 mile, if it won't you don't have enough fuel supply scope
On my old pump gas Duster I had to go to .120 needles and seats to be able to jet it rich enough to slow that car down in he 1/4 mile work up


Thanks Cab, that's great info.


2 kids and a dog
Re: Carter strip Mechanical pump [Re: Sport440] #2538550
08/19/18 02:17 PM
08/19/18 02:17 PM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Originally Posted By Sport440
Yes with the carter strip pump I was experiencing some nosing over at the top end. When it would nose over it would run 10.9,s. When it didn't nose over, still felt like it was pulling, 10.8,s. Figured I would up grade to stop the nose overs at the top end figuring I could get Consistant 10,8,s. Well ended up getting consistant 10.47/10.50,s

Wow, wasn't expecting that, sometimes you can be starving for fuel and you Wont even know it. And yes Pump change only, nothing else. Thought I was just having some occasional fuel starvation nose overs.


You must have been thrilled with that improvement! Thanks for the info.


2 kids and a dog
Re: Carter strip Mechanical pump [Re: ahy] #2538853
08/20/18 05:13 AM
08/20/18 05:13 AM
Joined: Jan 2003
Posts: 27,421
Balt. Md
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383man Offline
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Originally Posted By ahy
Type of fuel, temperature and usage are big variables.

An engine compartment mounted pump sucks the fuel from the back. If the fuel gets hot and boils, pump capacity does not matter. It won't pump anything useful sucking vapor.

Current pump gas is made for EFI systems and boils easily.

A suitable electric pump mounted in the rear where it is cooler often works much better vs engine mounted pump. It gets some pressure in the fuel before it gets into the hot engine compartment. That would be my suggestion.



I agree with this. I know many guys run the mechanical Carter pump but I run the Holley black pump mounted right by my fuel tank. I use a 3/8 stock type sending unit and run 3/8 line. Just the fact to have the fuel coming up to the front under pressure rather then being pulled under vacuum will help fight vapor lock a lot, The one problem I see is fuel boiling in the carb which can happen with either mech or electric pump. I like having my electric pump mounted by the gas tank so my fuel is under some pressure coming forward. But that's just me as many do still like to run the mechanical pump. Good luck with which ever setup you use. Ron

Re: Carter strip Mechanical pump [Re: TonyS451] #2538894
08/20/18 10:15 AM
08/20/18 10:15 AM
Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451 Offline OP
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Thanks Ron - I'll be honest, if I thought I would race on a fairly regular basis, I would have an electric pump back there for sure. My car is really not set up for racing, but hopefully at some point I throw some sticky tires on and see what it can do. Or in my case w the 4 speed, see what I can do! I do smile when I hear about the guys running 10's with 5/16 line and mech pump, but I understand why that's not going to work for everyone.


2 kids and a dog
Re: Carter strip Mechanical pump [Re: TonyS451] #2538945
08/20/18 11:51 AM
08/20/18 11:51 AM
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Wichita
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GY3 Offline
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Running 91 No Ethanol fuel and having a 1/2" phenolic spacer under the carb help with summertime issues.


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Carter strip Mechanical pump [Re: TonyS451] #2538955
08/20/18 12:02 PM
08/20/18 12:02 PM
Joined: Jan 2003
Posts: 13,318
Marion, South Carolina [><]
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Marion, South Carolina [><]
11.40 at 117.4 mph at 3700 lbs all motor. Carter strip mechanical pump w/ 3/8" line.
10.60s on a 150 shot, but the nitrous had a separate fuel system w/ an electric pump. Motor still fed by the mechanical Carter.

Later on I changed to -8 line w/ a Holley blue pump and put a sump in the tank. Ran no different.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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