Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

Best position for adjustable regulator

Thread Tools
 
Search this Thread
 
Old Nov 27, 2009 | 11:30 PM
  #1  
396375's Avatar
Thread Starter
9 Second Club
iTrader: (10)
 
Joined: Mar 2008
Posts: 256
Likes: 1
From: Niagara Falls NY
Default Best position for adjustable regulator

I talked to a mechanic today who told me they moved the regulator from the end of the fuel rail to the fender well on their race car and picked up 2 psi.He said it was a bad idea to put the regulator on the end of the fuel rail and yet I see a lot of fast cars running them this way.I'm not sure I believe him.Any thoughts?
Reply
Old Nov 28, 2009 | 09:02 AM
  #2  
Lonnies Performance's Avatar
LS1TECH Sponsor
iTrader: (16)
 
Joined: Feb 2007
Posts: 2,662
Likes: 2
From: Pittsburgh, PA
Default

If installed properly, it makes absolutely no difference if it is on the rail or 2 ft away.
Reply
Old Nov 28, 2009 | 09:02 AM
  #3  
Old Geezer's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Jun 2004
Posts: 5,639
Likes: 71
From: GA, USA
Default

I've not seen such a "phenom". However, I have seen regs screwed directly into the end of a rail, that developed cracks. I don't think hanging the wt of the reg, and hoses on a fitting, is a good idea.
Reply
Old Nov 28, 2009 | 04:19 PM
  #4  
396375's Avatar
Thread Starter
9 Second Club
iTrader: (10)
 
Joined: Mar 2008
Posts: 256
Likes: 1
From: Niagara Falls NY
Default

Thanks guys.Hey Geeser.Maybe you and I ran sometime at Bowling Green.The GNs were so simple compared to the C5s.Love them both though.I think if you have a steel bulk head fitting welded to the rail it should hold up.
Reply
Old Nov 28, 2009 | 07:19 PM
  #5  
Lonnies Performance's Avatar
LS1TECH Sponsor
iTrader: (16)
 
Joined: Feb 2007
Posts: 2,662
Likes: 2
From: Pittsburgh, PA
Default

Mounting the reg to the rail is a neat way to do it, but you should always put some sort of brace to the intake for support.
Reply
Old Nov 28, 2009 | 08:36 PM
  #6  
MeentSS02's Avatar
Kleeborp the Moderator™
20 Year Member
iTrader: (11)
 
Joined: Mar 2004
Posts: 10,316
Likes: 6
From: Dayton, OH
Default

I'd also be leary of mounting the regulator on the rail itself - they don't weigh much, but couple it with engine vibration and it could eventually cause problems. That's why I mounted mine here:



It ended up working out well for me in my application.
Reply
Old Nov 28, 2009 | 09:54 PM
  #7  
396375's Avatar
Thread Starter
9 Second Club
iTrader: (10)
 
Joined: Mar 2008
Posts: 256
Likes: 1
From: Niagara Falls NY
Default

Geez.That crossover line looks like a -12.It must take 10 minutes to fill that thing up
Reply
Old Nov 28, 2009 | 10:21 PM
  #8  
MeentSS02's Avatar
Kleeborp the Moderator™
20 Year Member
iTrader: (11)
 
Joined: Mar 2004
Posts: 10,316
Likes: 6
From: Dayton, OH
Default

Nah...just a -8AN line for the crossover. The feed still uses the stock hard lines, so that limits me on that one, but the line going into it from the back is a -8, and the line feeding the rails is also -8. I use -6 for the return, which you should be able to easily pick out from the picture.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo




All times are GMT -5. The time now is 08:04 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE