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Thread: HOW FAST AM I SPINNING MY BLOWER ???

  1. 02-05-2004, 06:11 PM #1
    frank woodall
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    HOW FAST AM I SPINNING MY BLOWER ???

    8" crank pulley and a 3" blower pulley at 6000 rpm ?

    How fast is the impeller spinning ?

    Whats the exact formula for figuring this ?

    Thanks everyone.............Frank :D
    "The replacement for displacement is measured in P.S.I."
    91 Turbo GT Vert (fast)
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  2. 02-05-2004, 06:12 PM #2
    regattacoupe
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    hey frank whats your email?
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D
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  3. 02-05-2004, 06:16 PM #3
    frank woodall
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    Quote Originally Posted by regattacoupe
    hey frank whats your email?

    amustangdude351@aol.com
    "The replacement for displacement is measured in P.S.I."
    91 Turbo GT Vert (fast)
    92 GMC Typhoon #1799
    00 Suzuki Katana
    90 LX Vert 5.0 (all stock 57,000mi)
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  4. 02-05-2004, 06:42 PM #4
    freezy74
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    crank pully x engine rpm x step up ratio / blower pully = impellar rpm
    93 notch-s-trim@11 p.s.i.,twisted wedge,GT-40,comp,306-pump gas only-10.93@129.7 on bfg drag radials--10.64@127.5 on ET drags
    548rwhp/502 rwtq

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  5. 02-05-2004, 06:57 PM #5
    frank woodall
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    Quote Originally Posted by regattacoupe
    hey frank whats your email?



    Thanks Brent,
    Its 55,440 rpm......I guess thats not too bad.
    "The replacement for displacement is measured in P.S.I."
    91 Turbo GT Vert (fast)
    92 GMC Typhoon #1799
    00 Suzuki Katana
    90 LX Vert 5.0 (all stock 57,000mi)
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  6. 02-05-2004, 06:58 PM #6
    regattacoupe
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    The tire/gear and injector deal on that is pretty cool too.
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D
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  7. 02-05-2004, 07:00 PM #7
    frank woodall
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    Quote Originally Posted by regattacoupe
    The tire/gear and injector deal on that is pretty cool too.

    Yea, I'll have to check all those little toyz out.......
    "The replacement for displacement is measured in P.S.I."
    91 Turbo GT Vert (fast)
    92 GMC Typhoon #1799
    00 Suzuki Katana
    90 LX Vert 5.0 (all stock 57,000mi)
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  8. 02-07-2004, 06:03 PM #8
    5150 LX
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    In the FAQ's :D

    http://www.superchargerhelp.com/showthread.php?t=3552
    Quote Originally Posted by Kato Engineering
    you just like the metric system because when you talk about your organs length, a three digit number seems to you longer than a one digit number....
    Dart Block 331 and No Power Adder, currently in pieces...... :weird:

    Used to run 6.90 @ 100.4 mph in the 1/8th
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  9. 02-07-2004, 06:42 PM #9
    regattacoupe
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    I might try to order a custom 3.125 pulley from ASP this year if I get the urge(and i'm sure i will). The 3" is a little much if i over rev and i don't think the 3.25 they always sell would warrant a change in warranty status. ;)
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D
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  10. 02-07-2004, 06:48 PM #10
    5150 LX
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    Quote Originally Posted by regattacoupe
    I might try to order a custom 3.125 pulley from ASP this year if I get the urge(and i'm sure i will). The 3" is a little much if i over rev and i don't think the 3.25 they always sell would warrant a change in warranty status. ;)
    Just do the 3" and set a rev-limiter to keep ya outta the RPM range that would over spin the blower, a little over shouldn't hurt things as I can bet there is a "fudge-factor" built into Paxtons claimed max RPM of 55k.
    Quote Originally Posted by Kato Engineering
    you just like the metric system because when you talk about your organs length, a three digit number seems to you longer than a one digit number....
    Dart Block 331 and No Power Adder, currently in pieces...... :weird:

    Used to run 6.90 @ 100.4 mph in the 1/8th
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  11. 02-07-2004, 06:54 PM #11
    regattacoupe
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    I figured the same thing sean, and it would be cheaper. Do you remember the MM&FF article when the Novi 1200 came out for the carb guys? They go the kit to test and a box full of pulleys and they were vortech pulley's stamped on them? food for thought, At least for us 8 ribbers. It would be very cool if i could just slap the 2.95 vortech pulley on there that are everywhere and a dime a dozen. they are double key way and we are single if i'm not mistaken?
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D
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  12. 02-07-2004, 07:52 PM #12
    5150 LX
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    Mines got dual keys so that may work as long as the shaft is the same diameter.
    Quote Originally Posted by Kato Engineering
    you just like the metric system because when you talk about your organs length, a three digit number seems to you longer than a one digit number....
    Dart Block 331 and No Power Adder, currently in pieces...... :weird:

    Used to run 6.90 @ 100.4 mph in the 1/8th
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  13. 02-07-2004, 11:48 PM #13
    regattacoupe
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    I might pick one up to try as I doubt I'd have a problem with resale on that one. Ready for me to buy that chain?
    89 Coupe with parts stacked inside of it and about 30#'s of dust on it with no end in sight. :weird:





    Although I am collecting parts for a 12.5:1 393 :D
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  14. 02-08-2004, 04:55 PM #14
    sinner
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    Quote Originally Posted by frank woodall
    Thanks Brent,
    Its 55,440 rpm......I guess thats not too bad.
    How much boost are you seeing?
    432 rwhp 404 rwtq.........11.76 @ 120mph on nitto's!!!
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  15. 02-08-2004, 04:59 PM #15
    frank woodall
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    Quote Originally Posted by sinner
    How much boost are you seeing?

    I see 14lbs @ 6000 and 15lbs @ 6300.....I shift at 6000 but go through the traps at 6300. lol
    "The replacement for displacement is measured in P.S.I."
    91 Turbo GT Vert (fast)
    92 GMC Typhoon #1799
    00 Suzuki Katana
    90 LX Vert 5.0 (all stock 57,000mi)
    Reply With Quote Reply With Quote
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