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Need help with fuel system redesign
#1
So in the spirit of honesty, I don't know everything.  Having made that painful admission, here is what I know and what I don't know about my fuel system.

I know it is inadequate.
I know I want to go to an electric pump mounted in the tank
I know I do not want to go to a fuel cell.

I want to keep my carburetor rather than go to fuel injection
I would like to replace all my lines with larger lines capable of moving more fuel.  I'm thinking 1/2 inch lines.

I don't know AN fittings well at all

I know very little about electric fuel pumps, but do understand the general wiring with a relay and a oil pressure cutoff.

I understand that filters are pretty important and location matters.  Beyond that I'm in the dark.


I would appreciate any help.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
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#2
Here is a good article on AN fittings with a size chart.

https://www.pegasusautoracing.com/docume...=TECH00096

Over 600 HP a bump up to 8AN is recommended.

'73 Grandé H Code. Headman long tube headers, T-5 Transmission, 3.70 Traclok, Lowered 1" all around, Aussie 2v heads w/ 2.19 intake, 1.71 exhaust, screw in studs, full roller cam 608/612 lift 280/281 duration LSA 112, Quick Fuel 750 CFM double pumper, AirGap intake.

'73 F code convertible. Bright red. Needs total restore. (IE HOT MESS)

- Jason
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#3
http://ipgparts.com/blog/fuel-line-sizin...do-i-need/

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
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#4
Interesting articles-now I even know less than I knew before!

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
#5
(02-28-2017, 01:23 PM)Jeff73Mach1 Wrote: Interesting articles-now I even know less than I knew before!

HAHA!!!!   rofl  Glad I could help!  

Im interested in seeing the other replies.  My fuel system is the stock one and will probably need upgraded at some point also.

Kevin

1971 Mach 1
408C Stroker
C4 w/3,000 stall
8.8" Rear w/3.73's
Disc brakes all way around.

[Image: 28ivsix.png]




                                                                                             
  Reply
#6
Okay, so as I research, here is what I am leaning towards using


AER-FCP0134 Dual feed line with -8n fitting

fuelab 20901 to adapt my tank to an in tank pump

VPN-F90000262 Walboro 105 GPH pump

MP-9945-BLK Return style regulator with -8n fittings for the inlet an -10n fittings for the return (I think there are better choices here, I just haven't found them yet.

Summit fuel line kit SUM-PUMPKIT3 or something similar- I think this is another part that I should be able to find a better alternative.

Again, I am ignorant so if something looks to be an issue please speak up

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
#7
when i was building my tbucket yrs ago. i had enough issues to solve for this was a non-kit car.. fab almost everything.. so when it came to the fuel i keep with the KISS program. pep boys off the shelf elect fuel pump. keep it within 18" of tank with filter before/after pump. the pump put out 5# without a regulator. simi hopped up chebby 350, camed, tunnel, etc. never had a fuel issue going that way.
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#8
Why not just keep it simple with a RobbMc mechanical pump bigger lines and your fuel feed problems are over and done with. Plenty of 800+HP engines in Australia fed by these pumps without ant dramas. Over the years I've seen more problems caused by people trying to over complicate their fuel systems, especially on boosted engines and when a simple method was used they were blown away that something so simple worked and worked well without any problems. Here's a link to his bigger pump also check out or even call them to see what they can help you with your needs.
http://www.robbmcperformance.com/products/ford1100.html
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#9
I have a nice Holley "lift pump" mounted inside my driver side rear wheelwell.  It has a pre-filter and works with the standard filter under the hood.  I have a Mr. Gasket 5psi pressure regulator inline with the filter and the carb.  I also fashioned a rock-chip shroud/cover for it out of a discarded plastic underside panel from a VW Jetta (I think...).

Prior to that, I had a Holley 'Black' racing fuel pump with the same configuration.  It was was noisy as all get out - you can hear it right before I start the car on my Frankenstang LIVES! video: http://www.youtube.com/watch?feature=pla...3C6DFc8LME

Anyway, the car fires right up with either of the fuel pumps... even after having sat for several months (turn the key to 'On,', the fuel pump runs, tap the pedal lightly once, turn the key to 'Start,' car comes to life).

Here are the pics of the fuel pump set-up - pretty much everything else on my fuel system is standard.

First installation of the Holley Black fuel pump.  I wound up putting a 90" elbow on the inlet and re-routing the fuel line up and over the bump stop bracket for the hard line.
[Image: attachment.php?aid=26944]

Here's the shroud/cover - you can just make out the inlet elbow for the Holley Black pump:
[Image: attachment.php?aid=34694]

Here's the new Holley pump - inline and much quieter, the shroud cover it even more completely:
[Image: attachment.php?aid=34693]

And finally, here's the bottom shot of the Holley Black pump installed under the car.  Even as bulky as it appears, it didn't interfere with anything (top left/center, forward of the rear axle).
[Image: attachment.php?aid=26945]

Hope this helps.  I'm going to be swapping out the carb and pretty much everything under the hood in favor of an Edelbrock E-Street TBI system with the Edelbrock Sump Kit (since I am running a "returnless" system, with no tank vent/return line) but everything else will stay the same.  The Holley pump I have now will act as a 'lift' pump to help keep the system primed.

Eric

[Image: mach1sig2.gif]
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#10
(02-28-2017, 04:02 PM)4Vforever Wrote: Why not just keep it simple with a RobbMc mechanical pump bigger lines and your fuel feed problems are over and done with. Plenty of 800+HP engines in Australia fed by these pumps without ant dramas. Over the years I've seen more problems caused by people trying to over complicate their fuel systems, especially on boosted engines and when a simple method was used they were blown away that something so simple worked and worked well without any problems. Here's a link to his bigger pump also check out or even call them to see what they can help you with your needs.
http://www.robbmcperformance.com/products/ford1100.html

I was just coming back to post that the more I researched, the more it looked like a premium mechanical pump with larger lines was going to be the answer.

[Image: 1_01_07_15_8_53_18.png]

"I love my Hookers!" and "Get some Strange" probably have a different connotation to non automotive enthusiasts!
  Reply
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