Anyone try Thompson powerblast plate

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Carburetor powered cars still maintain the highest hp output period.

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...
 
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.
 
Your last statement was what it was. I just showed you some evidence contradicting that.
 
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.
 
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.
Thanks. OK then, cool. And I can find this on an average hot rod?
Your last statement was what it was. I just showed you some evidence contradicting that.
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.
 
Rumblefish, go back and read your last sentence from your post #74
I believe that is what pishta is responding to.
 
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.
 
Rumblefish, go back and read your last sentence from your post #74
I believe that is what pishta is responding to.
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....
 
Its all good. I just wish we were having this conversation playing pool! :)
 
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 **** 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:
 
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?
 
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?


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.
 
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.
 
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.
 
Only if it is connected to a 100% ***.
:rofl:

Is this 100%?

BIG ***.jpg
 
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.
Just wondering when will you be dyno testing this month? Very curious to see how these work. Please post results :)
 
Had to postpone. He had to go to Colorado. Just waiting for him to get back
I tested these on my dyno about a year ago. Motor was a 602 crate with a 650 track warrior no spacer. Base lined the motor with plates in and then took plates out and picked up a couple hp. Also picked up a hesitation when hammering the throttle. Which is why the customer put them on to begin with. Went up 3 or 4 sizes on nozzel and got rid of the hesitation and kept power the same (couple better than with the plates). So the motor seemed to require less pump shot with the plates . I can't say why it lost power for sure but they kind of hang in the venturis a little bit. Might be hurting airflow or possibly changing fuel distribution a little and the motor didn't like it. The air fuel ratio stayed the same at WOT. Only lost a couple horse on a 350 hp engine. I think their sweet spot would be for driveability issues. That being said under the right conditions on the right motor that change in fuel distribution ( if that's what it was) might pick up a couple horse.
 
I bought em after having a couple few too many beers one night and after arrival I put them on the mildest motored car in the stable, 65' Cuda (318' w/ 650 cfm Holley and mild cam), from about all I could tell they made more noise. I mean you can see the fuel atomizing differently off the plates but when romping on it I didn't detect any noticeable difference in performance and they actually caused a bit of a stumble. Since the 65' in my avatar is just my sometimes putt around town car I don't like effing with it much since my other High Performance rides keep me busy enough.

Save your $$$ ...
 
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hey @Johnny Mac did you ever get a chance to play with these things?
I did install them. As noted above, they do look like they atomize better, but they did turbulate air flow on a flow bench as well. I didn't notice any real gains on the car from last season to this season. 60' times and quarters are the same. I don't think they are "bad" but I can't say I magically found a tenth, or even anything in the 60'. They look like they are doing something :p
 
I did install them. As noted above, they do look like they atomize better, but they did turbulate air flow on a flow bench as well. I didn't notice any real gains on the car from last season to this season. 60' times and quarters are the same. I don't think they are "bad" but I can't say I magically found a tenth, or even anything in the 60'. They look like they are doing something :p
cool. thanks for messing with them. maybe they work better, (if at all), as a band aid when things aren't tuned right to start with, who knows :rolleyes:
"They look like they are doing something :p" i can't complain about that, i'm at work trying to do the same thing :)

thanks
 
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