scottywheels

Well guys we had the car on the dyno last night and the F1 with the 4.0 pulley only saw 7 psi. I was hopeing for 14-16. It makes good power at only 7 psi, I mean 550 is easy but im looking for more boost and i cant think of what is wrong.

<small>[ February 28, 2003, 01:23 PM: Message edited by: scott ws6 ]</small>

scottywheels

We ordered the blower from ATI. Cartek made no money on the F1. ATI is the one that said that this was the blower and the pulley that I needed in order to make the boost and power that im looking for. right now the F1 is only spinning at 50% so I talked to ATI and they said that I should pull it with the air inlet off of it because it is real restrictive on the F1 and then see what PSI I make. And then they will send me a pulley to make what im looking for. The F1 is a max of 70k impellar speed. Well I want the impellar speed at 68k when my car is at 6800 rpm.

CHRISPY

That is interesting about the intake restriction. Should get mufflex to make you a solid 4 inch intake tube with 9x6x4 inch conical K&N. You wont have a restriction then.. heheh
Chris

ChrisB

boost is going to depend quite a bit on your motor setup also. ATI's advice in this matter is what I would suggest also - you need to verify that your intake tract is not collapsing. You can just pull it off and check, though if you are going to make 16+psi you need a solid intake/discharge tract anyway. If you are still low after that then pully up - if you are only spinning the F1 at 50% impeller speed then it is a waste - you want the blower to be spinning right around peak effeciency at your hp peak - if you are turning significantly less then you would do better with a smaller blower - as you would make more boost earlier. For your goals the F1 sounds right but you definitely need to pulley up.


Chris

scottywheels

We took the inlet off and it gained about 1.5 psi. So Im calling sergio at ATI and getting the pulley sent overnight. im also going to call mms and get the crank pulley. <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />

VINCE

iTrader: (1)

I hope you figure it out. I want to see some massive #'s.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

scottywheels

well ati is sending me the 3.0 pulley. ill tighten the 37inch belt the best i can and run that until i get the 8 rib set up from ASP in 5 weeks or the mms kit.

Pro Stock John

iTrader: (34)

Scott, IMO before you order parts you need to look a few issues...

1) Current size of crank pulley, and also the blower pulley?

2) You are running a 6 rib belt right? For those just reading, that means that your blower belt is the same size as the serpentine belt that we have for our accessories.

My concern is that you are getting belt slippage because of the thin belt you are using. I have not heard of any Procharger hitting the boost you want to hit with a 6 rib belt.

My car should hopefully make big supercharger power. I am doing a 9:1 348ci with a Vortech YS trim. I am going right away with the a Vortech 8" crank pulley which is already 8 rib. I am going to run something like a 3.25 or smaller blower pulley, but I'm not sure on the blower pulley just yet.

FastBlackTA

iTrader: (7)

ORLLS1,

Why ya blasting Cartek? On another thread you blasted cartek for possibly blowing up another car...?

It's a known fact that julio and dave know their $hit. They've been a great help in my current 427 buildup and they aren't even building it. I'm doing most of the work myself at my own shop which kills their profit, yet they still take the time to help me in the buildup.

Anyway, scott ws6- I'm sure that julio will get everything worked out. You will undoubtedly have a badass ride soon.

-Conrad

JS

iTrader: (4)

I talked to my buddy in length today about your setup and he thinks the 5.0:1 drive is whats hurting you Scott.
With that drive it take alot to turn it and with your current pulley configuration its not the best scenario.He thinks u are gonna tax that impeller speed at 6600 rpm.He likes the idea of going bigger pulleys to get the blower in boost quicker and putting less stress on blower via impeller speed.

He said for sure your crankshaft pulley wasnt the best one to run for your setup,but he agreed like PSJ you should try the 3in pulley first and see what happens.

Then in a few weeks call ASP and get a TWIN 6 rib setup.He likes that better over a 8 rib because of more belt contact.

JS

OSR 1

scott wouldnt it be better to stop in and fill a blue bottle at our shop (ill even buy you lunch) <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" />

scottywheels

PRO STOCK- I talked to ASP and GWP and they both have 8 rib set ups with the bigger crank pulleys. Julio said that with a 7.85 crank and a 4.0 blower pulley ill cross the lines at about 68oo rpm with the blower at 68,000. The max on the Blower is 70,000. So Im calling to see who can get it for me faster.

On the other hand, Ill have the 3.0 pulley on tomorrow and dyno it with about 11-13 psi and see where that puts me just to get a # before the T400 goes in.

KeithSS

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by OSR 1:
<strong> scott wouldnt it be better to stop in and fill a blue bottle at our shop (ill even buy you lunch) <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">lol <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Kyle

LOL LOL LOL. OSR1, i think you and NOS have something goin on pushin all that juice around like that. But SCott. you do get lunch out of the deal. i bet cartek never asked you to a free lunch. hehehehehe <img border="0" alt="[barf]" title="" src="graemlins/gr_barf.gif" />

Pro Stock John

iTrader: (34)

My feeling is that you will see so much belt slippage that you won't see the boost you seek but I'd like you to show me otherwise that would be cool.

So you will eventually run a 7.85 crank and a 4.0 blower pulley? How many lbs of boost are you shooting for?

scottywheels

ProStock- at 8 psi im up around 570 Julio and that is only spinning the blower at 42k. With the 7.85 and 4.0 8 ribs il have the blower at 67k. hopeing to see around 15-18 psi, but my motor flows real well so i figure if im around 570 at 7.5-8 psi I should be around 650-700 rwhp at 15 psi however we wont see that due to the T400 going in on monday. Ill be happy with 600 through the T400. <img border="0" alt="[gruffy cottonball]" title="" src="graemlins/gr_gruffy.gif" />

Lost & Found2

[QUOTE]Originally posted by scott ws6:
[QB] PRO STOCK- I talked to ASP and GWP and they both have 8 rib set ups with the bigger crank pulleys.

If you wouldn't mind, let me know what both shops are charging for their setup.

BIGBOS

How about a 7.85" MMS crank pully and a 3.2" pully, I plan on using that for above 12psi...

What is the next smallest size?

scottywheels

thw mms is only a 6 rib set up. the 7.85 and the 3.2 pulley you will over spin the blower max rpm. The 7.85 crank with the 4.0 blower pulley is about 64,000 rpm. The max on the F1 is 70,000.

ASP 7.85 crank 8 rib $250
4.0 8 rib blower pulley $95
8 rib idler $85

BIGBOS

So when I do my motor I would be better off going with an ASP 8rib crank pully 7.85"..

I got a 3.60" pully on there now..would that make me see anywhere near 12psi?

I'm also running the D-1SC, and plan to keep that head unit when I upgrade the internals in the motor...