LS1TECH - Camaro and Firebird Forum Discussion

Forced Induction Superchargers | Turbochargers | Intercoolers

Boost wont go over 6psi ?

Thread Tools
 
Search this Thread
 
Old Jan 21, 2010 | 02:26 AM
Share
  #1  
Mohammed's Avatar
Mohammed
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default Boost wont go over 6psi ?
A friend got '00 GT stang with p1sc , car has about 480rwhp , suddenly the boost lowered to 6psi, it was about 9psi . checked everything and didn't figure out what the problem is !!

what could be the problem ??
Reply
0
Old Jan 21, 2010 | 02:41 AM
Share
  #2  
1dirtyZ's Avatar
1dirtyZ
8 Second Club
iTrader: (1)
 
Joined: Nov 2001
Posts: 3,697
Likes: 1
From: the not so stock tribe
Default
check the hoses to see if something came loose , also check for belt slip or something that might restrict the filter.
Reply
0
Old Jan 21, 2010 | 02:44 AM
Share
  #3  
Mohammed's Avatar
Mohammed
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default
Originally Posted by 1dirtyZ
check the hoses to see if something came loose , also check for belt slip or something that might restrict the filter.

Do you mean there is air leak somewhere ?
Reply
0
Old Jan 21, 2010 | 06:56 AM
Share
  #4  
cjmatt's Avatar
cjmatt
TECH Enthusiast
iTrader: (4)
 
Joined: May 2006
Posts: 589
Likes: 0
From: Metro Detroit
Default
Originally Posted by Mohammed
Do you mean there is air leak somewhere ?
yes, when a supercharger is spun, it puts out a certain amount of air no matter what, the only way your boost would drop is if the air is either leaking out a hole, or the belt is slipping and not letting it spin fast enough. How many rib pully do you have on the supercharger
Reply
0
Old Jan 21, 2010 | 08:48 AM
Share
  #5  
Mohammed's Avatar
Mohammed
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default
Originally Posted by cjmatt
How many rib pully do you have on the supercharger
Sorry , but I didn't get ur question
Reply
0
Old Jan 21, 2010 | 09:06 AM
Share
  #6  
KS91Z28's Avatar
KS91Z28
On The Tree
 
Joined: Jan 2010
Posts: 112
Likes: 1
From: Olathe, KS
Default
'96-'04 GT Mustangs are 6-rib drive, but they can be converted to 8-rib.

Check the bypass valve. The vacuum line may have come undone, or the diaphram may have developed a hole in it.
Reply
0
Old Jan 21, 2010 | 10:23 AM
Share
  #7  
cjmatt's Avatar
cjmatt
TECH Enthusiast
iTrader: (4)
 
Joined: May 2006
Posts: 589
Likes: 0
From: Metro Detroit
Default
Originally Posted by Mohammed
Sorry , but I didn't get ur question
the supercharger pulley and belt will have a certain amount of grooves on it. the more grooves, the harder it is to slide the belt.

a 6 groove pulley is most likely sliding, put on a new belt and see what happens
Reply
0

Trending Topics

Old Jan 24, 2010 | 06:41 AM
Share
  #8  
EPP's Avatar
EPP
FormerVendor
iTrader: (22)
 
Joined: Mar 2003
Posts: 13,063
Likes: 2
Default
Look for belt dust on the blower, it will be black in color. Belt dust is an indication the blower belt is slipping. A new blower belt will generally appear to be too small at first, and may be hard to install. After a half an hour to an hour of use, the new belt will stretch and may need to be retightened. The first hour of use should be limited to part throttle use, to allow the belt to break in. Bob
Reply
0
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jan 24, 2010 | 09:53 AM
Share
  #9  
Mohammed's Avatar
Mohammed
Thread Starter
TECH Regular
 
Joined: Mar 2005
Posts: 426
Likes: 0
From: saudi arabia
Default
Originally Posted by Exotic Performance Plus
Look for belt dust on the blower, it will be black in color. Belt dust is an indication the blower belt is slipping. A new blower belt will generally appear to be too small at first, and may be hard to install. After a half an hour to an hour of use, the new belt will stretch and may need to be retightened. The first hour of use should be limited to part throttle use, to allow the belt to break in. Bob

I'll do that on the day


When we opened the hose in the front of the blower we found some oil on the edges , i think the filter caused that ... is that ok ?
Reply
0
Back to Subforum
Forced Induction
View Next Unread
If you are STS and Stalled please come in




Advanced Search

All times are GMT -5. The time now is 07:47 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE