Anyone try Thompson powerblast plate

Fuel and Air Systems

  1. pishta

    pishta I know I'm right....

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    Great discussion but I think your last point is gonna be the hardest to prove. Where is the highest output in motorsports and how could a carb(s) feed that much HP? 2015 US Army Dragster may have topped 11,000 HP. How else are you going to feed that besides fuel injection? Not enough air to carry that much fuel into the cylinders. Here is ONE injector from a 2008 video, and they already have gone faster...
     
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    • rumblefish360

      rumblefish360 So close, yet so far away

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      Going to the extreme end of the spectrum does t prove your point nor does the extreme pumping power of that pump since the pump must pressurize the system that isn’t using all of what is pumped on a street or lower level strip car Nor the top fuel car.

      True, the TF car will gobble up ridiculous amount of fuel.
      How does this apply to today’s topic.
       
    • pishta

      pishta I know I'm right....

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      Your last statement was what it was. I just showed you some evidence contradicting that.
       
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      • TT5.9mag

        TT5.9mag Well-Known Member

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        Rumble, while you are spot on most of the time I disagree with the statement you made regarding carb vs mpfi and hp. In today’s world a properly tuned mpfi with individual cylinder fuel and timing control will make more power than a carb every single time.
         
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        • rumblefish360

          rumblefish360 So close, yet so far away

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          Thanks. OK then, cool. And I can find this on an average hot rod?
          Ummmm, no. You showed an extreme environment. Not in the same league being discussed. Your off topic. What we’re talking about is a street bound N/A carburetor engine.
           
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          • my68barracuda

            my68barracuda Well-Known Member

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            Rumblefish, go back and read your last sentence from your post #74
            I believe that is what pishta is responding to.
             
          • TT5.9mag

            TT5.9mag Well-Known Member

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            Well average is a completely subjective term open to many interpretations. Here in so cal at the 3 or 4 tracks I frequent it is not uncommon at all. In fact more and more average hot rods built nowadays are going that route.
             
          • rumblefish360

            rumblefish360 So close, yet so far away

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            OK, thanks. I think this is off track anyways.
            I’m wrong? OK, no problem.
            I just do see how a fuel injected blown top fuel type fuel pump and engine fit into the topic. I guess I’m missing something. I’m certainly not going to fight about this with my ol’buddy pishta.

            Also re thanking @TT5.9mag , @pishta and yourself.
            I must be on a different rail track in my head.
            Anyways.... back to the power blast plate....
             
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            • pishta

              pishta I know I'm right....

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              Its all good. I just wish we were having this conversation playing pool! :)
               
            • rumblefish360

              rumblefish360 So close, yet so far away

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              Well, the beer and pool part is great. The intelligent conversation will steadily drop after a few beers and I’ll be to busy joking around talkin shit that is truly meaningless but probably funny as hell. I’ll be honest and say I’ll probably top the night but ether getting slap by a girl or punched by her other half.

              Atter that, I am not responsible for any injuries you incur due to unstoppable laughter up to and including death due to my Shenanigans.

              (PS, the wife just concurred....)

              (PSS, Don’t listen for her when she says “He’s had enough, he is slurring his words.”)

              :rofl:
               
            • TT5.9mag

              TT5.9mag Well-Known Member

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              Back to the powerblast plate, I really cannot see how those can effect WOT horsepower production. Really they are on a completely different circuit. The squirters are there to cover up a momentary lean dead spot on tip in right? So on a properly tuned carb set up there is really no power to be gained. Now how can we test drivability? That’s the question here. I can see them making a difference in how the engine reacts on the street in average (there’s that word again Rumble) driving scenarios. Johnny will you be street driving this car at all? I know it’s a bracket car, but any road time?
               
            • yellow rose

              yellow rose Doctor of Thinkology.

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              It's not about power. Here is a what if?

              What if they actually allow the tuner to use a smaller pump nozzle and maybe a less aggressive pump cam and not lose driveability?

              That's a big deal. When you touch the throttle and the vacuum falls, any and most all of the fuel mixed with air will reform as a liquid and fall onto the floor and walls of the intake (wet flow or wall flow) and that includes some of the pump shot.

              95% (or more) of that fuel that falls out of suspension never gets back into the air stream (regardless of port finish) and just runs into the combustion chamber, stratifies and ends up as partially burned fuel out the pipe.

              So, if you can reduce some fuel from the accelerator pump, you help the wet flow conditions.

              That's a big deal.
               
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              • TT5.9mag

                TT5.9mag Well-Known Member

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                YR, that makes much more sense to me. I see this making a difference in drivability and now that you’ve explained it, making a difference in efficiency as well.
                 
              • mderoy340

                mderoy340 Well-Known Member

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                I use the Demon nozzles because they are drilled at the correct angle to shoot fuel into the center of a down leg booster venturi. Holley nozzle hits the side and drips at low rpm.
                IMO 60' is the only way to tell if pump shot is correct. Butt dyno is fine on a street car.
                Demon Carburetion Accelerator Pump Discharge Nozzles 122131
                 
              • 71_dart_swinger

                71_dart_swinger Well-Known Member

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                So this post escalated quickly off into left field. So I got a pretty good idea how ally of you guys feel and think of them. I’m actually scheduled for some dyno time beginning of January. I’ll do a run with and without the plates to see if there is any difference on the set up I have . . Won’t know until January.
                 
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                • RustyRatRod

                  RustyRatRod Weenie idiot loser. FABO Gold Member

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                  Is this 100%?

                  BIG ASS.jpg
                   
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                  • Jadaharabi

                    Jadaharabi FABO Gold Member FABO Gold Member

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                  • fez440

                    fez440 Well-Known Member

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                    Just wondering when will you be dyno testing this month? Very curious to see how these work. Please post results :)
                     
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