WTB Hat to suit roots blower

Discussion in 'PSI Superchargers Tech Questions' started by 37hemi, Mar 23, 2011.

  1. 37hemi

    37hemi New Member

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    #1
    37hemi, Mar 23, 2011
  2. Don Onimus

    Don Onimus New Member

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    injector

    There are lots to choose from. Some injectors really help certain superchargers. Also the money you want or willing to spend. Don
     
    #2
    Don Onimus, Mar 23, 2011
  3. 37hemi

    37hemi New Member

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    hat

    ttt please
     
    #3
    37hemi, May 16, 2011
  4. Mike Canter

    Mike Canter Top Dragster
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    Make that whatever hat you buy that the bottom opening matches the opening in the top of the blower for whatever overdrive you are using. If your OD requires a 10.5-11" opening then there is no point in buying a hat with a 9.5 bottom opening. The ideal thing is to buy a custom made spacer to go between the hat and blower and match both openings.
     
    #4
    Mike Canter, May 16, 2011
  5. 37hemi

    37hemi New Member

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    hat

    Oh, nice to no. Where would I would I find this info out
     
    #5
    37hemi, May 17, 2011
  6. Mike Canter

    Mike Canter Top Dragster
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    Tricks of tuning. So what blower do you have now? What OD are you using and how long is the blower top opening now?
     
    #6
    Mike Canter, May 17, 2011
  7. 37hemi

    37hemi New Member

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    hat

    I have a 427ci Hemi. At the moment I have a retro 6/71 making 28psi. Has a bird on top with the RCD hat spacer. But Im planning to put a hi helix 14/71 on it very shortly. I want to make 35 - 40 psi. I havnt got a 1471 yet so I can get any sized top opening. I want a new hat mainly due to looks more than anything.
     
    #7
    37hemi, May 17, 2011
  8. Mike Canter

    Mike Canter Top Dragster
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    On most 1471s at that 35-40 lbs of boost you will have the top hole of the blower wide open at around 10.5"-11" or whatever the blower you decide on has. So you don't want a hat with a 9.5 bottom opening. Like I said the other option is to get a custom machined 2-3" spacer that matches the two openings. That spacer is going to cost you around $500. The hat designs are important and the wrong hat can cost you a lot of horsepower. Just something to keep in mind. A mismatch between the blower and the hat can cost you upwards of 150 HP.
     
    #8
    Mike Canter, May 17, 2011
  9. Peacemaker AFC

    Peacemaker AFC New Member

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    hat

    Jim Phillips has a carbon hat complete with k valve and stops. I think he is asking 2 grand and it maybe only a couple years old but in very good shape and not worn out like most you will find. Find him on here under Jim Phillips motorsports he runs a mustang alcohol funny car. I can get you one though it depends on how much you want to spend on one. I don't rip people off so I won't make anything off of it.
     
    #9
    Peacemaker AFC, May 17, 2011

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