Procharger boost problem???
Thread Starter
Former Vendor
Joined: Aug 2001
Posts: 1,756
Likes: 0
From: Atlanta GA
Procharger boost problem???
I have a question for the procharger guys; I have installed a 3.50 pulley on the charger and MMS idler bracket I do not see and signs of slipping. On the dyno the car makes 11.6 psi of boost at 5500 then falls off to 10.5 at 6,200. Now I would like to ask if the air intake from procharger is the cause of this. Is the air cleaner assembly just to damn small so it cant make any more boost due to it not letting it suck anymore air in, or is there another problem?? Any ideas or help would be great. :cheers:
Melting Slicks
Joined: Mar 2002
Posts: 2,931
Likes: 2
From: Tx
Re: Procharger boost problem??? (opticZ06)
A few possibilities come to mind.
1. Blow off valve not holding.
2. Air filter choking the flow (easy to test, just disconnect for 1 pull)
3. Twin intercoolers and tubing not supporting flow and causing too much pressure drop
4. Boost leak somewhere in the tubing
5. Boost leak at PVC valve
I think I got about 2-3 psi with the following changes:
single intercooler
new airbridge
new blowoff valve
new air filter
1. Blow off valve not holding.
2. Air filter choking the flow (easy to test, just disconnect for 1 pull)
3. Twin intercoolers and tubing not supporting flow and causing too much pressure drop
4. Boost leak somewhere in the tubing
5. Boost leak at PVC valve
I think I got about 2-3 psi with the following changes:
single intercooler
new airbridge
new blowoff valve
new air filter
Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Procharger boost problem??? (QuickSilver2002)
A few possibilities come to mind.
1. Blow off valve not holding.
2. Air filter choking the flow (easy to test, just disconnect for 1 pull)
3. Twin intercoolers and tubing not supporting flow and causing too much pressure drop
4. Boost leak somewhere in the tubing
5. Boost leak at PVC valve
I think I got about 2-3 psi with the following changes:
single intercooler
new airbridge
new blowoff valve
new air filter
1. Blow off valve not holding.
2. Air filter choking the flow (easy to test, just disconnect for 1 pull)
3. Twin intercoolers and tubing not supporting flow and causing too much pressure drop
4. Boost leak somewhere in the tubing
5. Boost leak at PVC valve
I think I got about 2-3 psi with the following changes:
single intercooler
new airbridge
new blowoff valve
new air filter
vetterdstr :cheers:
Platinum Supporting Vendor
Joined: Sep 2001
Posts: 5,730
Likes: 268
From: VENTURA Ca
Re: Procharger boost problem??? (opticZ06)
It's hard to get a 3.50 pulley to hold. Try taking the bottom alternator bolt out and pull the alternator towards the frame. You can get the belt a lot tighter this way. I make a small bracket so that I can lock the alternator in that position.
Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Procharger boost problem??? (Andy@AandACorvette)
It's hard to get a 3.50 pulley to hold.
vetterdstr :cheers:
[Modified by vetterdstr, 9:35 PM 8/10/2003]
Thread Starter
Former Vendor
Joined: Aug 2001
Posts: 1,756
Likes: 0
From: Atlanta GA
Re: Procharger boost problem??? (vetterdstr)
Thanks for the help guys, I did have it on the dyno when we saw this problem. The belt show no signs of slipping and there are no parts of the belt any ware like before the MMS brackets. I was just wondering the same things you were like the BOV I have heard is a POS which one do you guys use and where can I get it, and the filter at the bottom is clean so has anyone seen more then 11.7 with the stock filter.
Thanks again :cheers:
Thanks again :cheers:
