What size Procharger pulley

[inglimer]

If I'm looking for 10-11 LBS of boost on my P1SC procharger, what size pulley should I get? Also if anyone knows either the belt length or manufacture\mo # for that same pulley, much appreciated.
Thanks.

 

[05stroker]

What size pulley are you running and how much peak boost are you at now?

 

[inglimer]

9# now according to the guy I bought bought​ the car from. Measuring across the outside of the sc pulley on their now it's 4.25" . I know that's not the correct pulley size in SC speak and a pulley vendors website on eBay said you need to remove the belt to get the actual dimension?
Thought there might be an easier way.

 

[05stroker]

9# now according to the guy I bought bought​ the car from. Measuring across the outside of the sc pulley on their now it's 4.25" . I know that's not the correct pulley size in SC speak and a pulley vendors website on eBay said you need to remove the belt to get the actual dimension?
Thought there might be an easier way.

Are you on a stock motor still? If so, I would first verify boost psi myself and if its 9lbs, I wouldn't go any higher.

 

[inglimer]

Okay and here comes the dumb question of the day, how do I check boost psi?

 

[05stroker]

Okay and here comes the dumb question of the day, how do I check boost psi?

You would have to buy a boost gauge. If you dont want it on the car permeantly, you could just run the tubeing though your door jamb.

 

[tigerhonaker]

Okay and here comes the dumb question of the day, how do I check boost psi?

Get yourself a Boost Gauge like in these pictures.











http://www.autometer.com/gauges.html


Terry

 

[06JET]

05 Stroker, Are you saying that a stock motors internals can't take over 9psi? Or, are you saying that you need headers, cam,fuel mods, etc before going higher?

 

[05stroker]

05 Stroker, Are you saying that a stock motors internals can't take over 9psi? Or, are you saying that you need headers, cam,fuel mods, etc before going higher?

Depends on the mods. I had full exhaust and lost mine at 12 psi and Ive seen them go sooner. Really depends on the hp and tq you are at. We all know that for most anywhere north of 450rwhp, you are on barrowed time on the stock rods.

 

[46addict]

9# now according to the guy I bought bought​ the car from. Measuring across the outside of the sc pulley on their now it's 4.25" . I know that's not the correct pulley size in SC speak and a pulley vendors website on eBay said you need to remove the belt to get the actual dimension?
Thought there might be an easier way.

I see 8psi on the gauge with my mods listed in sig (long tube headers and bigger cams with a tight LSA are supposed to bleed boost slightly). I am running a 4.13" pulley with a 70" belt (Gates #K080700). On a stock engine/exhaust this setup should net 9psi.

 

[05stroker]

I see 8psi on the gauge with my mods listed in sig (long tube headers and bigger cams with a tight LSA are supposed to bleed boost slightly). I am running a 4.13" pulley with a 70" belt (Gates #K080700). On a stock engine/exhaust this setup should net 9psi.

Back when I had my P1 it was as follows for my stock motor and Lts with ORX. Just for reference.
4.3 - 8 psi
4.1 -10 psi
3.7 - 12 psi

 

[46addict]

So max boost out of a P1 is around 14psi? Just out of curiosity.

 

[05stroker]

So max boost out of a P1 is around 14psi? Just out of curiosity.

That all depends on the setup. You would have to run the numbers for pulley size and crank pulley vrs the rpms you want to turn for the psi you are currently seeing on your setup. I swaped to a F1a after I was at 12 psi on the P1.

 

[46addict]

I get that but I assumed we were going by fixed variables since you were referencing boost psi to certain pulley sizes.

 

[05stroker]

I get that but I assumed we were going by fixed variables since you were referencing boost psi to certain pulley sizes.

Keep in mind that was just my experience with my setup, but a 3.4 should get you you 14 psi as long as your not over spinning the blower.

 

[06JET]

With my mods listed in the sig I see 8 psi and some change at 6000 rpm. My pulley is the stock one with the kit. I guess I need to measure it.

 

[05stroker]

Its been a long time since Ive seen a stock Procharger pulley, but IIRC the size is stamped on the back of the pulley.

 

[05stroker]

Double​ post

 

[46addict]

With my mods listed in the sig I see 8 psi and some change at 6000 rpm. My pulley is the stock one with the kit. I guess I need to measure it.

Its been a long time since Ive seen a stock Procharger pulley, but IIRC the size is stamped on the back of the pulley.

Yup. The numbers are stamped and visible when you are standing in front of the car. Come to think of it the stamping may be on both sides of the pulley.

 

[06JET]

This is my pulley size. 3.70. Seems like it should be higher than 8psi at 6200 rpm. What are your thoughts. I don't rev any higher because of the stock internals.