bbc gone backwards

Discussion in 'PSI Superchargers Tech Questions' started by PROMOD63, Jan 15, 2017.

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  1. jody stroud

    jody stroud ZOMBIE Top Dragster

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    DMPE is right... A lot of boost at a very high temp will definitely hurt performance. A good blower should be less than 115 deg or so. Depending on where you measure the temp.
     
    #21
    jody stroud, Jan 18, 2017
  2. Mike Canter

    Mike Canter Top Dragster
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    Also the temps depend on how New the stripes are, if you use Prizm, and what overdrive you use. You might see 115 F at 14.5% OD at the start but you sure not going to see that low of a temperature at 26% at the end of a run unless your stripes are really worn
     
    #22
    Mike Canter, Jan 18, 2017
  3. jody stroud

    jody stroud ZOMBIE Top Dragster

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    Well I've run a new SSI F4 and a new Hammer blower both at over 30% and still keep the temps below 120deg. Spray bar works
     
    #23
    jody stroud, Jan 18, 2017
  4. Mike Canter

    Mike Canter Top Dragster
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    Where is your temp probe?
     
    #24
    Mike Canter, Jan 18, 2017
  5. jody stroud

    jody stroud ZOMBIE Top Dragster

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    Rear of intake.
     
    #25
    jody stroud, Jan 18, 2017
  6. jody stroud

    jody stroud ZOMBIE Top Dragster

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    My tuner , Mike Kopchick, tells me that if I move the probe to the front of the intake the temp will go up approx 8 to 10 deg I plan on moving it and comparing the numbers I get. I'll post the results.
     
    #26
    jody stroud, Jan 19, 2017
  7. Bob Meyer

    Bob Meyer Comp Eliminator

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    Barnyard Logic time..........
    1. pull out main jet, look in hole to check if there is another jet behind (seen it happen too many times)
    2. Put the old clunk back on to see if it still does what it used to do.

    Neither of these cost anything !
     
    #27
    Bob Meyer, Jan 19, 2017
  8. Randy G.

    Randy G. Top Alcohol

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    LOL
     
    #28
    Randy G., Jan 19, 2017
  9. Mike Canter

    Mike Canter Top Dragster
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    That can happen in the heat of battle. I have a mark on the shaft of my jet tool that matches up with the surface of the BV if all is good and if two jets it is not all the way in.
     
    #29
    Mike Canter, Jan 20, 2017
  10. BEDNAR1320

    BEDNAR1320 Member

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    I know of a VERY experienced NHRA national champion T/AD and TA/FC racer that was fooled by the two pill thing for three consecutive races some 15 years ago.

    That's a good idea, Mike.
     
    #30
    BEDNAR1320, Jan 20, 2017
  11. gordon tarbell

    gordon tarbell Member

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    Gas or Alky?
     
    #31
    gordon tarbell, Jan 22, 2017
  12. Mike Canter

    Mike Canter Top Dragster
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    Gordon it has to be ally.
     
    #32
    Mike Canter, Jan 22, 2017
  13. gordon tarbell

    gordon tarbell Member

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    Thats kinda what I assumed(alky for fuel) . What has me scratching my head is the front four pistons being black. normally if I remember right alky really doesn't color things up like gasoline (black from being too fat). Only black I saw on alky was from oil.
     
    #33
    gordon tarbell, Jan 27, 2017
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