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fuel pressure regulator mounting #1220448
04/22/12 01:13 PM
04/22/12 01:13 PM
Joined: Apr 2009
Posts: 3,415
Toronto
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mshred Offline OP
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mshred  Offline OP
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Toronto
Hey guys,

Trying to get an idea of where and how to mount a single holley 803 non return style regulator. If anyone has any pics of this it would be greatly appreciated. I know a lot of guys mount them on the fenders, but was thinking of mounting it somewhere off the engine possibly? Not sure what is allowed though in the NHRA rules.

Any pics or insight would be great!

Thanks!
Matthew

Re: fuel pressure regulator mounting [Re: mshred] #1220449
04/22/12 01:19 PM
04/22/12 01:19 PM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
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long island NY


1.39 9.85 - 137 mph
Re: fuel pressure regulator mounting [Re: mshred] #1220450
04/22/12 01:59 PM
04/22/12 01:59 PM
Joined: Oct 2010
Posts: 2,407
Ambridge, Pa.
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rickraw Offline
top fuel
rickraw  Offline
top fuel
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Ambridge, Pa.
here's mine

7174892-100_0014.jpg (116 downloads)
Re: fuel pressure regulator mounting [Re: rickraw] #1220451
04/22/12 02:02 PM
04/22/12 02:02 PM
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Toronto
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mshred Offline OP
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mshred  Offline OP
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Toronto
Quote:

here's mine




thats a cool little bracket...did you make it, or can you buy that from a manufacturer?

Re: fuel pressure regulator mounting [Re: mshred] #1220452
04/22/12 02:08 PM
04/22/12 02:08 PM
Joined: Oct 2010
Posts: 2,407
Ambridge, Pa.
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rickraw Offline
top fuel
rickraw  Offline
top fuel
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Ambridge, Pa.
it was on there when i got the car. i beleive it's from magna flow

Re: fuel pressure regulator mounting [Re: rickraw] #1220453
04/22/12 02:45 PM
04/22/12 02:45 PM
Joined: Aug 2004
Posts: 2,128
sweden
S
sshemi Offline
top fuel
sshemi  Offline
top fuel
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Posts: 2,128
sweden
I bought one of those from jegs complete with fittings and tubing.
Not the best quality and fit, but ti works and looks good.

Re: fuel pressure regulator mounting [Re: rickraw] #1220454
04/22/12 02:46 PM
04/22/12 02:46 PM
Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire Offline
I Live Here
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Las Vegas
On single carb set ups we always "hang" them by the carb from the lines. No reason to mount one anywhere else really, plus it get the reg as close as possible to the carb.



Re: fuel pressure regulator mounting [Re: Al_Alguire] #1220455
04/22/12 03:33 PM
04/22/12 03:33 PM
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Toronto
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mshred Offline OP
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Toronto
Quote:

On single carb set ups we always "hang" them by the carb from the lines. No reason to mount one anywhere else really, plus it get the reg as close as possible to the carb.







I was never sure if hanging them without mounting them solid to something was acceptable. But if hanging them is okay, then that might be the best option it seems. Only thing is im using push lok, not stainless braided hose....should work similar though I would think and be able to support it

Re: fuel pressure regulator mounting [Re: Al_Alguire] #1220456
04/22/12 06:25 PM
04/22/12 06:25 PM
Joined: Sep 2006
Posts: 1,442
central ohio
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nss guy Offline
pro stock
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central ohio
ideally you want to mount the regulator ahead (front) of the carb or carbs. with the reduced psi you don't want the g-forces keeping the fuel from the carb.

Re: fuel pressure regulator mounting [Re: mshred] #1220457
04/22/12 06:50 PM
04/22/12 06:50 PM
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Az
Crizila Offline
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Az
I think the only stipulation was a minimum of 6" in front of the firewall. I'm not a big fan of mounting the fuel press. reg solid to the engine in any way - but lots do it without a problem.

7175248-fuelgageline.jpg (135 downloads)

Fastest 300
Re: fuel pressure regulator mounting [Re: nss guy] #1220458
04/22/12 07:18 PM
04/22/12 07:18 PM
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Posts: 43,159
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Quote:

ideally you want to mount the regulator ahead (front) of the carb or carbs. with the reduced psi you don't want the g-forces keeping the fuel from the carb.


Mount it on the elephant ears below the alternator or on the radiator support, on anything anywhere in front of the carb.


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: fuel pressure regulator mounting [Re: Cab_Burge] #1220459
04/22/12 11:43 PM
04/22/12 11:43 PM
Joined: Oct 2003
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Az
Crizila Offline
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Crizila  Offline
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Az
Supply and demand folks. If you have enough pressure an volume to the reg, it aint gonna make no difference which way that -6 or -8 line is pointing. Liquid doesn't compress. The pump might have to work a little bit harder, but if you have enough pump, it's gonna stay @ 7 psi. - or where ever you set it.


Fastest 300
Re: fuel pressure regulator mounting [Re: Cab_Burge] #1220460
04/23/12 02:02 AM
04/23/12 02:02 AM
Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
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Las Vegas
I dont think ANYONE here is making enough steam to worry about the regulator being affected by Gforce..Just saying lets not over think this.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: fuel pressure regulator mounting [Re: Al_Alguire] #1220461
04/23/12 02:13 AM
04/23/12 02:13 AM
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
Biginchmopar Offline
pro stock
Biginchmopar  Offline
pro stock

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Posts: 1,397
Carson City, Nevada
A-Men!

Re: fuel pressure regulator mounting [Re: Biginchmopar] #1220462
04/23/12 10:33 AM
04/23/12 10:33 AM
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Az
Crizila Offline
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Crizila  Offline
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Az
Quote:

A-Men!


FoSho!


Fastest 300
Re: fuel pressure regulator mounting [Re: mshred] #1220463
04/23/12 11:43 AM
04/23/12 11:43 AM
Joined: Nov 2004
Posts: 3,544
Syracuse,NY
CompWedgeEngines Offline
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CompWedgeEngines  Offline
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Syracuse,NY
shameless plug here...these work and look great..and yes I sell them.

7176087-Reglinekit.jpg (143 downloads)

RIP Monte Smith

Your work is a reflection of yourself, autograph it with quality.

WD for Diamond Pistons,Sidewinder cylinder heads, Wiseco, K1 rods and cranks,BAM lifters, Morel lifters, Molnar Technologies, Harland Sharp, Pro Gear, Cometic, King Engine Bearings and many others.
Re: fuel pressure regulator mounting [Re: CompWedgeEngines] #1220464
04/23/12 07:50 PM
04/23/12 07:50 PM
Joined: Apr 2009
Posts: 3,415
Toronto
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mshred Offline OP
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Toronto
Thanks for the pics guys! just trying to get some ideas if I end up running motor only and using only one reg. Todd, I will hit you up for that bracket if I do Still haven't decided if im going to strap on the cheater kit that I already have- I have the two regs and a magnafuel dual port log, just need to make up my mind

Re: fuel pressure regulator mounting [Re: mshred] #1220465
04/28/12 05:43 PM
04/28/12 05:43 PM
Joined: Jan 2005
Posts: 866
Winnipeg ,Mb. CA.
chryco Offline
super stock
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Winnipeg ,Mb. CA.


I built a plate that came off the intake and has the reg mounted to it. Works for me.


Gas is fer washin' parts ....Alky`s fer drinkin' ...Nitro`s fer Racin'!
Re: fuel pressure regulator mounting [Re: chryco] #1220466
04/28/12 06:11 PM
04/28/12 06:11 PM
Joined: Jan 2006
Posts: 501
Port Mcneill,B.C.Canada
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Islandcuda Offline
mopar
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Port Mcneill,B.C.Canada
I have my main line coming around the motor side of my distributor and have the regulator just floating on the 2 lines from the carb. No mounting no nothing, it just hangs there in mid air and hasn,t given me any problems in 7 or 8 years.


67 cuda new best 1.395 60 10.240 at 128.58mph
Re: fuel pressure regulator mounting [Re: chryco] #1220467
04/28/12 06:23 PM
04/28/12 06:23 PM
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communist bloc of new jersey
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jamesc Offline
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communist bloc of new jersey
Quote:

ideally you want to mount the regulator ahead (front) of the carb or carbs. with the reduced psi you don't want the g-forces keeping the fuel from the carb.




believe me when i tell you that "problem" borders on urban legend along with the totally incorrect notion that the larger the diameter of the front to rear line makes this "problem" worse. the diameter has no effect with regards to any g-force impact it's the linear length that does.

water exerts roughly .433 psi per foot and the specific gravity of race fuels runs around .725-.750 so fuels exert about .320 psi per foot. this would mean if you have 10 linear feet of line parallel with the forward motion of the car and the car is accelerating at 1G there would be 3.2 PSI of back pressure. iirc a pro stock car averages about 1.5 g during the run which of course is higher at the hit and softer at the big end.

does it have an impact, yes, is it a problem for the vast majority of racers, no







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