fuel pressure - Chevrolet Impala SS Forum : Chevy Impala SS Forums
Impala SS Forum
Go Back   Chevrolet Impala SS Forum : Chevy Impala SS Forums > 91-96 Impala/B-body > Engine Performance
New User? Register - Forgot Password

Reply
 
Thread Tools Display Modes
  #1  
Old 01-20-2013, 11:25 PM
naSStyboy9c1 naSStyboy9c1 is offline
Senior Member
 
Join Date: Nov 2007
Location: from west philly now in da grove
Posts: 284
naSStyboy9c1 is on a distinguished road
Default fuel pressure

just wondering when is it needed to have a adjustable fuel pressure regulator?
__________________
Ecam racing engines
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 01-20-2013, 11:46 PM
4x4high 4x4high is offline
Senior Member
 
Join Date: Jan 2012
Location: Pleasanton, Ca.
Posts: 806
4x4high is on a distinguished road
Send a message via Yahoo to 4x4high
Default

Quote:
Originally Posted by naSStyboy9c1 View Post
just wondering when is it needed to have a adjustable fuel pressure regulator?
When you install a much larger cam, heads, and larger exhaust system that requires more fuel to make more HP along with an ECM tune.
Reply With Quote Quick reply to this message
  #3  
Old 01-20-2013, 11:59 PM
KW Baraka KW Baraka is offline
Senior Member
 
Join Date: Feb 2001
Location: South Central Texas....By Way of the South Side of Chicago!!!!!
Posts: 18,468
KW Baraka is an unknown quantity at this point
Default

Quote:
Originally Posted by naSStyboy9c1 View Post
just wondering when is it needed to have a adjustable fuel pressure regulator?
If you're not running nitrous.....don't bother. Stick with a stock, non-adjustable FPR.

KW
__________________
1996 BBB SS, 398ci SR

1995 DCM SS, 355ci

Reply With Quote Quick reply to this message
  #4  
Old 01-21-2013, 05:57 AM
The Bolt-On Terror's Avatar
The Bolt-On Terror The Bolt-On Terror is offline
Senior Member
 
Join Date: Jul 2000
Location: Bright, IN
Posts: 3,170
The Bolt-On Terror is an unknown quantity at this point
Default

None of the above; cam, heads, exhaust, nitrous, call for an AFPR ...... in my opinion.
Far less than 1% of the people running LT1 engines are doing the things that would call for it.
A long time ago, before I knew much about these cars, I ran one. Now I try to do things the right way.

Instead of going into the explanations, I'll first just ask: what are you trying to accomplish?
__________________
Stock bottom 350, Built by B-Body Performance
NA: 10.98 @ 122
100 shot: 10.35 @ 128
2012 ISSCA SSuperPro Champion
2013 ISSCA SSuperNatural Champion
2013 ISSCA Roadrace Runner-up
Reply With Quote Quick reply to this message
  #5  
Old 01-21-2013, 08:41 AM
RatSSled's Avatar
RatSSled RatSSled is offline
Senior Member
 
Join Date: Apr 2003
Location: Farm in Lyndell, PA
Posts: 4,510
RatSSled has a little shameless behaviour in the past
Default

Quote:
Originally Posted by The Bolt-On Terror View Post
None of the above; cam, heads, exhaust, nitrous, call for an AFPR ...... in my opinion.
Far less than 1% of the people running LT1 engines are doing the things that would call for it.
A long time ago, before I knew much about these cars, I ran one. Now I try to do things the right way.

Instead of going into the explanations, I'll first just ask: what are you trying to accomplish?
Perhaps he's installing a carburetor!
__________________
______________________________________________
96 BBB Impala SS - Stock with bolt-ons 12.82 @ 106
96 DGGM Impala SS - 496 BBC 10.13 @ 134 all natural, 9.69 @ 143 on the gun
96 DGGM Wagon - Spun bearing, headed for the scrap yard!
Reply With Quote Quick reply to this message
  #6  
Old 01-21-2013, 08:54 AM
The Bolt-On Terror's Avatar
The Bolt-On Terror The Bolt-On Terror is offline
Senior Member
 
Join Date: Jul 2000
Location: Bright, IN
Posts: 3,170
The Bolt-On Terror is an unknown quantity at this point
Default

Quote:
Originally Posted by RatSSled View Post
Perhaps he's installing a carburetor!
ya got me there!
Reply With Quote Quick reply to this message
  #7  
Old 01-21-2013, 11:45 AM
GuillaumeC's Avatar
GuillaumeC GuillaumeC is online now
Senior Member
 
Join Date: Jun 2003
Location: Montreal, Québec, Canada
Posts: 1,924
GuillaumeC is an unknown quantity at this point
Default

Quote:
Originally Posted by KW Baraka View Post
If you're not running nitrous.....don't bother. Stick with a stock, non-adjustable FPR.

KW

Why would one need an adjustable FPR with nitrous?
__________________
Guillaume Charest

1995 DGGM Caprice, 355ci twin turbo, TH400, F.A.S.T. EFI, 4200 lbs street car 9.96 @ 141.2 mph
1989 Mazda RX7 Turbo II, 385ci LT1, LE2 heads/cam, T56
Reply With Quote Quick reply to this message
  #8  
Old 01-21-2013, 02:22 PM
Ram Air 383 Ram Air 383 is offline
Senior Member
 
Join Date: Dec 2000
Location: Brooklyn, NY
Posts: 4,495
Ram Air 383
Default

Quote:
Originally Posted by naSStyboy9c1 View Post
just wondering when is it needed to have a adjustable fuel pressure regulator?
When your fuel injectors are a bit small for the engine and you have fuel pump that is efficient at a higher pressure, an adjustable regulator can be used to prevent injectors from working overtime.
__________________
93 Mazda RX-7 - Heads/Cam LS1, T56 - sold
95 Chevy Caprice - Golen LT4 383, LE3 heads/cam - no more

Reply With Quote Quick reply to this message
  #9  
Old 01-21-2013, 02:47 PM
KW Baraka KW Baraka is offline
Senior Member
 
Join Date: Feb 2001
Location: South Central Texas....By Way of the South Side of Chicago!!!!!
Posts: 18,468
KW Baraka is an unknown quantity at this point
Default

Quote:
Originally Posted by GuillaumeC View Post
Why would one need an adjustable FPR with nitrous?
Having the regulator dialed down for normal street driving......and have the option of dialing it up when you're gonna spray.

Or so I've been told.

KW
Reply With Quote Quick reply to this message
  #10  
Old 01-21-2013, 03:07 PM
GuillaumeC's Avatar
GuillaumeC GuillaumeC is online now
Senior Member
 
Join Date: Jun 2003
Location: Montreal, Québec, Canada
Posts: 1,924
GuillaumeC is an unknown quantity at this point
Default

Not sure I agree with that...

If you need a bump in fuel pressure when spraying then I think you have the wrong fuel jet size.

Just my opinion, I could be wrong.
__________________
Guillaume Charest

1995 DGGM Caprice, 355ci twin turbo, TH400, F.A.S.T. EFI, 4200 lbs street car 9.96 @ 141.2 mph
1989 Mazda RX7 Turbo II, 385ci LT1, LE2 heads/cam, T56
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Chevrolet Impala SS Forum : Chevy Impala SS Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 10:32 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
(c) 2007-2011 Impala SS Forum