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The Official Centrifugal Pulley/Boost Combo Thread!!!

Discussion in 'The Blower Bistro' started by 98 Saleen Cobra, Mar 21, 2012.

  1. Helomech74

    Helomech74 Well-Known Member Established Member

    Messages:
    2,406
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    Dec 24, 2007
    Location:
    Tennessee
    The F1R has been sold off unfortunately, so I'll either live with this F1D or look at an F1A or possibly swapping over to a Vortech JT or YSI. First I just want to drive the car and enjoy it for a bit.
     
  2. 98 Saleen Cobra

    98 Saleen Cobra Authorized Vendor Authorized Vendor

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    18,832
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    Feb 28, 2007
    I feel ya man. I have JT-trim. Waiting to see what it does. But it made 1000rwhp thru a auto already being overspun and it was fine.. Should be good on my combo for 900+ I would think
     
  3. Helomech74

    Helomech74 Well-Known Member Established Member

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    Dec 24, 2007
    Location:
    Tennessee
    Yeah, if I decide to change to a Vortech it would probably be a YSI. Just comparing specs, the JT trim is very similar to the F1D I'm already running. I want to talk to Procharger and see how safe it would be to overspin this F1D by a few thousand rpm and then I might consider having another custom pulley made to get a little boost out of it. I'm also going to measure boost before my intercooler to see what kind of drop I'm getting. Shouldn't be more then 2.5psi if that. I made this intercooler using 3 Garrett cores which are some of the best on the market. I'll play around with it and see what I can do.
     
  4. 98 Saleen Cobra

    98 Saleen Cobra Authorized Vendor Authorized Vendor

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    Hell ya man, let me know what you come up with. Yea the big thing about vortech's is that it's not uncommon to overspin them by 10k rpm and not have issues.

    Who builds your custom pulley's and how much are they?
     
  5. Helomech74

    Helomech74 Well-Known Member Established Member

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    Dec 24, 2007
    Location:
    Tennessee
    I always overspeed my larger F series blowers without issue, but I'm not sure about the F1D (It's basically a D1SC with a larger step ratio). So, I'm not sure how well it will hold up to overspeed.

    As for the pulleys, my buddy is a machinist and he makes them for me in his spare time. I gave him a Procharger 3.55 8 rib to use as a reference and he built my current pulley using a lathe and an end mill. I think he was planning on developing a cnc program to make them faster.

    I also found a place online (928 Motorsports) that has a few various odd sizes available for different superchargers as well. All of the Procharger ones are too small for me to use though.
     
  6. 98 Saleen Cobra

    98 Saleen Cobra Authorized Vendor Authorized Vendor

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    Oh gotcha. That's cool man. I had no idea that's what the f1d was. Pretty neat. I really like the f series blowers. Only issue I've heard of is the bracket flexing from procharger
     
  7. Coyote Crusader

    Coyote Crusader New Member Established Member

    Messages:
    21
    Joined:
    Nov 26, 2016
    Location:
    North Carolina
    2015 Base GT (Manley Rods/Wiseco Pistons)
    1. 4V - 5.0L
    2. Paxton SL2200
    3. Stock Compression
    4. Stock Heads
    5. Stock Cams
    6. Stock Intake
    7. Intercooled (A/A)
    8. SP 1 7/8" LT w/ cats, Solo Performance Mach Thunder Exhuast
    9. 3.6" pulley
    10. 12psi @7200 RPM.
    11. JLT
    12.674/545
     
    7998 likes this.
  8. Pierre Lucas

    Pierre Lucas Member Established Member

    Messages:
    44
    Joined:
    Jul 18, 2015
    Location:
    Pennsylvania
    98 Cobra Vert (stock bottom end)
    1. 4.6l 4v
    2. D1SC-H
    3. Stock Compression
    4. Stock Heads
    5. Stock Cams
    6. BBK 65mm throttle body
    7. Stage 11 Intercooler 3 core
    8. BBK long tubes, BBK H pipe, Flowmasters
    9. 4.15 pulley
    10. 12.1psi @6250 RPM.
    11. AFM Power Pipe
    12. 431/385
     
  9. TheGateKeeper

    TheGateKeeper Member Established Member

    Messages:
    51
    Joined:
    Jul 18, 2015
    Location:
    Southern Maryland
    IMG_2470.JPG Kinda new posting here. Think I've got a couple threads but seeing as my cobra is coming along quite nicely lately I figured now that i CAN...I'd post in one of my favorite threads to read.


    2001 Cobra, 2001 Front Cover/Mach1 style setup w/raised alternator.
    1. 4V C-Heads Self Ported at my shop.
    2. Vortech V2 SC
    3. Factory Teksid. Fully rebuilt/Manley forged/ 9.8:1 3cc Pistons. Canton Windage tray.
    4. Ported Heads? YEA
    5. What Cams? Stock 01 Cobra
    6. What intake? (Self Ported, cut open.. bell mouths ported STOCK LENGTH.
    (1/2" upper plenum spacer.)
    7. Vortech Aftercooled Setup
    8. Exhaust Combo?
    Pacesetter longtubes (coated and heat wrapped) MAC O/R Prochamber, factory IRS tailpipes w 12" resos.
    9. Pulley Combo: Stock crank pulley, 3.33 blower, Gates 112" belt.
    10. 7.5Psi @5500-5900
    (SO FAR)
    11. Factory Vortech Slinky pipe
    12. 473.16/417.42 @6kRPM
    11* total timing (safe temp tune w limiter) due to a cracked factory fuel line and loss of pressure at 6k. Going back this week to wrap up final tuning with new fuel delivery.

    Factory 327 gears, throttle body.

    WILL UPDATE WITH NEW NUMBERS.
     
  10. TheGateKeeper

    TheGateKeeper Member Established Member

    Messages:
    51
    Joined:
    Jul 18, 2015
    Location:
    Southern Maryland
    Wanted to add
    93 Octane
    Aero 325 pump
    And decca 60# injectors.
     
  11. Helomech74

    Helomech74 Well-Known Member Established Member

    Messages:
    2,406
    Joined:
    Dec 24, 2007
    Location:
    Tennessee
    1998 Cobra with stock timing cover
    1. 4V B Heads
    2. Procharger F1A
    3. BB/Stroker 10.3:1 compression
    4. Livernois Stage 3 port work
    5. Crower Cams
    6. Stock Cobra intake gasket/port matched
    7. Custom A/A Intercooler using Garrett cores
    8. 1 3/4" x 3" ARH headers with custom 3" catted x-pipe, 3" Dynomax Ultra Flos and custom 3" tail pipes.
    9. 3.8" 8 Rib head unit pulley and 10% IW Crank pulley
    10. 17psi @ 6300 rpm
    11. Custom made power pipe with giant AEM filter
    12. 753hp/667tq

    Fuel system is a Maganfuel Protuner 750 in a BBRC fuel tank, -10 Feed, -10 return, 80lb FRPP injectors. All tuning was done on 93 octane.
     
    Last edited: Aug 10, 2017
  12. 03GTGreen

    03GTGreen Member Established Member

    Messages:
    166
    Joined:
    Dec 2, 2007
    Location:
    Madison
    01 Cobra
    03 Cobra heads and cams
    Built Teksid (5.0)
    Vortech V2SQ with 2.85 pulley
    Full Bassani Exhaust
    Fore Return Setup (E85)

    Anybody wanna take any guesses? on break in miles right now, hoping for at least 550, preferably 600

    Also, it seems running the 2.85 pulley is putting the impeller on the edge, any truth to this?
     
  13. Helomech74

    Helomech74 Well-Known Member Established Member

    Messages:
    2,406
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    Dec 24, 2007
    Location:
    Tennessee
    Which V2 is it? SQ just means helical gears, is it an SI, SCI, HD TI etc? The V2 units are al 3.6 step ratios, so if you're running a stock harmonic balancer and a 2.8 head unit pulley, then you will be at max impeller rpm (55K) at around 6600 engine rpm, give or take a few hundred rpm. I know that the V7 and V24 Vortech units can be over spun with no issues, I'm not familiar with the V2 line though.
     
  14. TheGateKeeper

    TheGateKeeper Member Established Member

    Messages:
    51
    Joined:
    Jul 18, 2015
    Location:
    Southern Maryland

    Ive got an older (2003) V2-SC. I rebuilt my entire head unit due to a seal leak and opted for the ceramic high speed bearings when I ordered the rebuild kit. That's why the other units are good up to 63k or wherever they go... Their impeller bearings are much tougher. If you plan on spinning it hard like it's a turbo I'd throw some in it.

    FOOD FOR THOUGHT...
    I went up in pulley size to the stock 3.60 Vortech pulley that comes with the non after-cooled kit. After running out of fuel at 6krpm w the 3.33 myself and tuner Figured bigger pulley, less boost.. maybe I'll get to my Red line, RIGHT? Nope. The car made 20 WHP/20 ftlb Tq MORE with no other changes two weeks later on the same dyno/ same tuner, same 93 octane and similar cold weather.
    We figured the work load of the blower with the larger pulley matched the motors NA power curve better, and made for a more efficient setup. With the smaller pulley on it, sometimes it would feel like the AC was on at cruising speed.

    Definitely try slightly bigger sizes and see how the motor reacts to it after you get a good safe tune for that high boost.

    My 01 is making 488/438 somewhere around 6100rpm. @5.5 PSI!
    Small pulley was 473/417 @7psi.

    LMAO DOHC problems right?
     
  15. TheGateKeeper

    TheGateKeeper Member Established Member

    Messages:
    51
    Joined:
    Jul 18, 2015
    Location:
    Southern Maryland
    New numbers

    Same exact list as my previous. (about 4 or 5 posts up) only change was to a larger 3.65 SC pulley. Power was supposed to go the other way for lack of fuel, but whatever. lol I'll take it. IMG_2743.JPG
     
    1998SVTCOBRA likes this.
  16. 03GTGreen

    03GTGreen Member Established Member

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    166
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    Dec 2, 2007
    Location:
    Madison
    Pretty sure its just a S, i dont think they got the revamped si, sci till the V3 line came out. I will eventually go YSI unless i can find a good deal on a V1

    Ive read your ok overspinning them 3-5k over. Ive got the stock crank pulley so i should be good.....I hope
     
  17. 01bl0wnbullit

    01bl0wnbullit New Member

    Messages:
    7
    Joined:
    Jan 24, 2017
    2001 bullitt
    1. 2V patriot stage 2 heads
    2. F1a
    3. 8.5:1
    4. Yes
    5. Bullitt custom cams
    6. Stock bullitt intake
    7. 3 core procharger intercooler
    8. Pypes or x with magnapacks
    9. 6 rib Stock crank, 3.5" blower 108 3/4 gates belt
    10. 10lbs at 5700 boost flatlined because of slip
    11. yes
    12. 510hp 550tq with 16* timing on 93 octane
     
  18. 98 N/A 4V

    98 N/A 4V Active Member Established Member

    Messages:
    2,495
    Joined:
    Sep 14, 2004
    Location:
    Tampa, FL
    1. 5.4 4v with navi heads
    2. Novi 2k
    3. 9.84:1
    4. No. Just a valve job.
    5. Comp 106460 (238/240 .475/.450)
    6. Homemade.
    7. FMIC 31x12x4 (CX racing)
    8. LT, o/r x, dumped
    9. 3.5" upper and 12% OD lower
    10. 8psi at only 5900...Ran out of fuel. Goal is to spin it to 7500
    11. No. Bell mouth on inlet.
    12. 564/510

    Looking to re-dyno next month.

    -Mark
     
    1998SVTCOBRA likes this.
  19. bunits19714

    bunits19714 Active Member Established Member

    Messages:
    478
    Joined:
    Mar 27, 2015
    Location:
    monroe mi
    17' shortblock-14" heads
    D1sc - black
    stock comp
    stock heads
    stock cams
    Boss manifold stock tb
    Pro Charger race intercooler
    1 7/8kooks-ORH-3"MBRP street mufflers with 3" bullets added as reso's
    4.13 with stock crank=16 psi @7300
    Stock Procharger
    770/565 on E-85 w/ 17*
    JPC return style twin 465
     
  20. 1998SVTCOBRA

    1998SVTCOBRA With all due respect... Established Member

    Messages:
    251
    Joined:
    Jul 6, 2011
    Location:
    Los Angeles, CA
    Hello! Finally got on the dyno recently, been wanting to post over here for a while

    1. 2V or 4V - 4 valve, B-heads
    2. Type of Blower - Vortech V1 S-trim
    3. Big Bore/Stroker/ Compression - Bored .20" and Mod Max stroker crank; 9.5:1 CP pistons
    4. Ported Heads? - Ported by Fox Lake; I have flow data if interested
    5. What Cams? - Custom ground comp blower cams
    6. What intake? (aftermarket, Ported, Ported Short Runner, etc) - Sean Highland shortened runner intake ported/polished, Accufab blade throttle body, IMRC deletes
    7. Intercooled(A/A) or Aftercooled or NO Cooler? - Vortech aftercooler with an upgraded heat exchanger
    8. Exhaust Combo? - BBK long tubes, off road x, magnaflows
    9. Pulley Combo (blower pulley size, crank pulley size) and belt length if you have it or remember - 8-rib, A/C delete, 3.00" blower pulley
    10. Amount of Boost you are seeing at X RPM - 11/12 lbs @ 6,500
    11. Powerpipe? - Yes, Anderson
    12. HP/TQ - 561/463; 18/19* of timing; 93octane
     
    Last edited: Apr 12, 2017
    TheGateKeeper likes this.

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