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Fuel Regulator to Carb Connections |
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Rebel Machine 
AMC Addicted 
Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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 Topic: Fuel Regulator to Carb ConnectionsPosted: Dec/09/2010 at 8:37pm |
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Just bought a Holley blue fuel pump & regulator. The regulator has two outputs (for dual carb application). I've just got a single carb but it's a dual inlet. Is it better to use both regulator outputs to feed both carb inlets or just one regulator output feeding both carb inlets?
Thanks,
-Steve-
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Grey Ghost
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Joined: Oct/11/2009 Location: Route 66 Il. Status: Offline Points: 158 |
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Posted: Dec/09/2010 at 9:08pm |
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On my engine Iuse the single outlet, it just looks neater.
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Lets go racing!
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poormansMACHINE
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Charter Member Joined: Jun/28/2007 Location: Shoemaker-Levy9 Status: Offline Points: 12302 |
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Posted: Dec/09/2010 at 9:22pm |
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I'd just run the single
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PHAT69AMX
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Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Posted: Dec/09/2010 at 11:21pm |
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Unaware if it's "better" or not, or just a preferense.
A dual feed holley fuel line requires a Tee of some sort, and the Regulator is a Tee,
so the (2) regulator outlets were used to feed each fuel bowl.
In the Holley book by Alex Walordy he suggest it best to have
the Regulator as close to the carb as possible.
There are brackets available that mount the reg next to the carb centered on the pass side.
Edelbrock offers a #8192 "kit" with ftgs, lines, regulator, and a reg mtg sandwich plate brkt.
Designed and fabricated my own reg mtg brkt out of sheet metal.
This also solves the "standard" dual line and AMC stock coil mtg location plumbing delima.
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Rebel Machine
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Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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Posted: Dec/10/2010 at 11:49am |
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Phat,
Thanks for the pics. I'm still debating whether to install the regulator on the shock tower or install it as you did. My only real concern with the regulator right at the carb is the heat coming off the intake.
Anyhow, another question for you... how do you have your fuel line routed in your AMX from the tank to the regulator? Is it coming up the passenger side?
Thanks,
-Steve- Edited by Rebel Machine - Dec/10/2010 at 11:50am |
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FuzzFace2
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Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10356 |
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Posted: Dec/10/2010 at 3:08pm |
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As said dont know if better but I run 1 out of reg. The pictures below is before I added a fuel psi gauge out on the cowl. the carb outlet is now on the front port and the small line to gauge is on the back. Dave ---- Edited by FuzzFace2 - Dec/10/2010 at 3:13pm |
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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PHAT69AMX
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Joined: Jul/07/2007 Location: West Virginia Status: Offline Points: 5919 |
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Posted: Dec/10/2010 at 4:21pm |
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Being yet a somewhat low buck operation, still running the stock
tank pickup, short 5/16 rubber hose out back, stock 5/16 suction line,
to a Carter M6906 Mech Pump, with 3/8 steel line from Pump,
up and around back of distributor along timing cover,
up around front pass corner of intake, to a 3/8 inverted flare Union,
to a 3/8 hose barb, short length 3/8 hose, to a Moroso Smooth Flow Elbow
3/8 hose barb to 3/8 Male Pipe screwed into Regulato bottom inlet.
Regulator is somewhat insulated from intake heat as it is suspended
by the bracket that mounts off of (2) carb studs.
Wondered about more heat exsposure from headers / exhaust when inner fender mounted,
if nothing else than the fuel line/lines going from fender over to carburetor.
The Edelbrock 8192 Dual Line kit is a good value at ~$115 + tax & ship
as it has (2) carb inlet ftgs, (2) short #6 AN Carb Fuel Lines, a 4-1/2 to 9 PSI Regulator,
(2) 3/8 Male Pipe to #6 AN Reulator Ftgs with 1/8 female NPT Gauge ports,
a 3/8 male pipe x #8 AN 90 deg elbow for regulator input,
and a billet aluminum regulator mounting "sandwhich" plate for between carb and intake flange.
Since making only maybe 400 HP, I run the Holley #162-500 Sintered Bronze Fuel Bowl Inlet Filters
that fit right in the stock Holley Dual Feed Fuel Bowl inlets behind the Inlet Fittings.
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Hurst390
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Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818 |
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Posted: Dec/12/2010 at 7:55am |
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I personally would use both outlets of the reg. to feed the carb...I use the big holley regulator with a much bigger pump but the small reg. will work fine with smaller pumps.... That holley blue pump will drive you out of your car if your doing much driving with it..I like the mallory 140 pump on a street/strip car.... much MUCH quieter...
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SC/Hurst Rambler
11.62 120 100% Street Legal |
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Rebel Machine
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Joined: Jul/03/2007 Location: Western Il Status: Offline Points: 5122 |
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Posted: Dec/12/2010 at 6:27pm |
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Yeah, I've heard they're really noisey. Had a Holley red pump in my old Gremlin, it was tolereable. Here's what I've got in mind to quiet the Holley blue pump.
 I'll make a bracket that will be sandwiched between the two heater hoses.
-Steve-
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