FlyingFinn

Hi,

I have Procharger P-1SC-1 7 psi kit in my T/A. Other mods are Comp 216/220 114 LSA cam, Patriot CNC'd LS1 heads, Hooker LTs, hooker cat-back, LS6 intake, valvetrain matched to hold.. BUT it will not make boost! Supercharger whines ok and everything sounds good. Autometer elecric boost gauge ONCE went to first 5 psi and the 10 psi at WOT. Now nothing.. I even bought a mechanical boost gauge and it shows like 1 psi at best. Any ideas? I just cant believe that my engine flows so much that it can't make boost

J-P

qc97z

iTrader: (9)

Something's definitely going on. You might want to try unhooking the piping from the outlet side of the S/C and see if you're really flowing any air or not out of it. It sounds like you've got a massive leak somewhere (maybe under full boost you blew a coupler), or something isn't right with the S/C's internals.

FlyingFinn

Thanks for your thoughts! All pipes and couplers are in place, no leaks and it blows a little when we disconnected a pipe from plastic airbox. Is it possible that by-pass valve leaks so much?

C5kid

iTrader: (12)

The bypass vlave will let alittle bit of air out.

i would try unhooking it directly from the headunit and see how much air is flowing.

Ed Blown Vert

iTrader: (2)

Make sure the bypass valve is closed when there is no vacuum

Bob@BruteSpeed

iTrader: (16)

I agree, I'd start at the bypass valve. Bob

FlyingFinn

We even disabled bypass valve to test if it helps.. and still no boost. Pulley sizes are ~4,13 inch on the Procharger and ~6,3" crank.

Bob@BruteSpeed

iTrader: (16)

Did you find the problem yet? Take the air inlet off the blower and see how much air is blowing out. It should be quite a bit. Is this a new kit or a used kit? Are you sure the blower is designed to be turning the direction you are spinning it? The P-1SC-1 impellers are designed to be turned in only one direction. Bob

FlyingFinn

Still having same problem. It's a used kit that I bought from a sponsor. They said it's been in a '98 Trans Am before and made 475 rwhp (stock engine). When we were assembling mounting bracket and s/c we noticed that the Procharger mounts differently than what the owners manual says. Outlet (to the engine) was pointing to drivers side and in owners manual it's pointing to passenger side We took turbine cover (right word for it?) off and placed it back so that everything is like instructions say. I'm not sure about the rotation.. But it blows air a bit. Not sure if it's enough. I guess not since I only see 0,1 bar or 1,5 psi according to two different mechanical boost gauges.

It has CARB E.O D-365-3. I try to find out exact part number..

Bob@BruteSpeed

iTrader: (16)

With the outlet left uncovered it should blow out an incredible amount of air. Since the outlet was not orientated correctly, I would question that this is the same head unit that was used in the T/A. I'd take a look at the impeller and see if it looks like it is curved to blow the air the way you are needing to rotate the blower. Bob

Packy

iTrader: (11)

It sounds to me like it is a different head unit if the outlet points to the other direction.

qc97z

iTrader: (9)

Sounds like something is a bit shady...

MR2liter

iTrader: (11)

As others have stated I think it's the wrong rotation headunit!

KS91Z28

If he ever got 5-10 psi, then he definately has the correct rotation blower.

Crisis

One thing the OP didn't mention is this kit was originally fitted with an FMIC (or so he though, may not be correct). Their assumption was that the turbine housing was turned to run the charge pipes to a front mount intercooler setup.
He does not have an front mounted intercooler(s) so he wanted the turbine rotated facing the engine. Now I don't know if this is all speculation or not but it was briefly discussed on another forum.

I'm guessing he is running the stock parts??

CARB E.O D-365-3 matched several prochager packages for mustangs, LT1's and TPI systems. The LS1/GEN III SBC application CARB E.O number is D-365-6
This is according to http://www.procharger.com/pdf/appGuide.pdf

Maybe Bob can help more??

OP could also look and see if the head unit has part # on it.
JP, I hope you don't mind me bud'n in.

-Edited for clarity-

Crisis

Could have been a glitch in the sender unit...
They could not confirm more than a psi with mechanical gauges.

FlyingFinn

Is there any easy way to confirm that I have a wrong rotation unit? I have been thinking that with my car making almost 400 rwhp naturally aspirated the P-1SC-1 just can't make enough boost with 6.3" crank pulley and 4.13" PC pulley.. -0.1" smaller pulley will add ~1 psi of boost, right? Should I get SDCE tensioner kit or Cog kit?

Crisis: Thanks for setting things clear

jhmws6

iTrader: (7)

I have a P1 reverse rotation mounted on my new motor which is currently still out of the car. I can take a picture of the inlet so that you can compare if you want. At least this will verify if yours rotates the right way.

John

Bob@BruteSpeed

iTrader: (16)

Look at the picture I posted up above of the impeller. If you look at your impeller and the direction you need your blower to turn, you can tell if you have the correct impeller. Bob

phatasp

iTrader: (11)

I was having the same problem with my vortech ttrim, it would run up to 9lbs of boost then drop down to nothing, so I plugged the vacuum line and capped the bypass valve and now it holds steady at 9. So I assume it,s the bypass valve.