Need some eyes to look at this blower...

Discussion in 'PSI Superchargers Tech Questions' started by tommyt, Jun 10, 2019.

  1. tommyt

    tommyt New Member

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    I have this odd BDS blower ...its a 16 -71 with 20" billet rotors, standard helix, has teflon on tips and sides...and it has a retro bottom and the dual pie openings as the pics show. Has standard Bird top opening. Clearences are tight, unlike other BDS blowers I have seen, which were all pretty loose. I would like to use it with alcohol on my conventional head BBC 572 in my 125" altered bracket-outlaw toy type car. Would this blower work for me to get me into the 6s range , or I'm wasting my time with it ? Is there any real benefit from the retro opening and the dual pie openings on a standard helix, or are these just gimmicks with the standard rotors ? Thanks, Tom
    BlowerSmall1.jpg
     
    #1
    tommyt, Jun 10, 2019
  2. Dave Koehler

    Dave Koehler Member

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    I don't have any advice on that blower but I must point out the following.
    572 cubes
    Altered not governed by weight rules
    16-71
    No limits on pulleys or fuel pumps.
    Tracks likely to be junk most of the time.
    Seems like a no brainer.
     
    #2
    Dave Koehler, Jun 10, 2019
  3. tommyt

    tommyt New Member

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    I have 2 seasons in this altered, I think I have the setup figured out enogh to try and step up to more power. I need to run 6s to keep up. Tracks are not the greatest, but not junk either...somewhere in between.
    Need to know if I have enough blower to do it.
     
    #3
    tommyt, Jun 11, 2019
  4. Mike Canter

    Mike Canter Top Dragster
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    What overdrive are you going to run with it
     
    #4
    Mike Canter, Jun 11, 2019
  5. tommyt

    tommyt New Member

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    I have pulleys to go 20 and 30 % overdrive...motor is built to rev to 8000rpm . Question is...will it pick up any decent hp going from 20% to 30% over., or just make heat. Guessing 20% over will put me somewhere in the 20lbs boost range.
    BTW, your plug reading article is great, I learned a lot from it when starting out. Saved me a lot of parts. On another car we started out with a new combo, no flowed system, only flowed pump, and had a working tune by the end of the weekend only reading plugs., no damaged parts, no milking oil etc.
     
    #5
    tommyt, Jun 12, 2019
  6. Mike Canter

    Mike Canter Top Dragster
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    Tommy, it might me ok at 20% but like you said may generate too much heat at 30%. Do you own this blower now?
     
    #6
    Mike Canter, Jun 12, 2019
  7. tommyt

    tommyt New Member

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    Yes, good or bad, I own it.
     
    #7
    tommyt, Jun 12, 2019
  8. Mike Canter

    Mike Canter Top Dragster
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    Then I would for sure try it.
     
    #8
    Mike Canter, Jun 13, 2019
  9. Neil Morley

    Neil Morley Member

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    Even though it’s efficiency will be diminishing and making more heat at 30% than 20%OD I’m certain it will still make more power especially since it is a retro even though it not a HH blower I would think simply because of its size it should get you in the 6s
     
    #9
    Neil Morley, Jun 17, 2019

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