Twin Procharger Curiosity
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I don't know if the amount of power to drive two F2's would be worth it instead of a single F3. Where's Morris when you need him!
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lol i didnt even think of that... I`m already runnig a F2 had goodluck with it gonna step up to the F3r. I`ve just been seeing these twin deals in some of the fastest street car mags and it got me thinking.... And i hadnt seen anyone else talking bout it... Steve which is better!!!!!!!! lol
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yeep,
travis quillen is currently tuning / building one now....
mechanical fuel injection, 632 cubes , twin F2's
52+ PSI BOOST
he goes under "turbopromod" on this site
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I am curious about this too, my pockets are not deep enough to be in the game so I don't know if procharger makes custom impellers to create a compressor map different from any of the stock ones. If not I do not understand how you would efficiently get 52+ pounds of boost from a compressor designed for a max of 40.
As far as the flow goes the combination of the biggest f-2s creates 37.5% more flow than the biggest single f-3 so on a big inch motor like a 632 you would really have something.
Of course my dream engine has always a 5.080 by 4.5 inch 730 semi hemi (or prefferably, with the wedge heads they had talked about due to the reduced wieght) with twin f3s this would allow you to have a great rod/piston/ring package and an engine that would rev with a wide power band, good efficiency and relatively low maintainence.
Maybe His Highness Sheikh Khalid Bin Hamid Al Thani will read this and help me out
Richard Gavle
As far as the flow goes the combination of the biggest f-2s creates 37.5% more flow than the biggest single f-3 so on a big inch motor like a 632 you would really have something.
Of course my dream engine has always a 5.080 by 4.5 inch 730 semi hemi (or prefferably, with the wedge heads they had talked about due to the reduced wieght) with twin f3s this would allow you to have a great rod/piston/ring package and an engine that would rev with a wide power band, good efficiency and relatively low maintainence.
Maybe His Highness Sheikh Khalid Bin Hamid Al Thani will read this and help me out
Richard Gavle
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Brady,
Looking forward to hearing about it, looks nice!!!
Gavle
Looking forward to hearing about it, looks nice!!!
Gavle
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There is a guy in my area running twin f3 on a bbc in 10.5 outlaw makes alot of power but has not had much luck getting it down the track i think 4.60 fastest so far.
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Hey 1970 Mustang,
Do you know much about the combo?, I assume the f3s are side by side not sequential?
Thanks in advance for any info you have.
Richard Gavle
Do you know much about the combo?, I assume the f3s are side by side not sequential?
Thanks in advance for any info you have.
Richard Gavle
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To tell the truth I just don't know. I built and tested a twin F2 on a 540 of mine. it was a belt drive set up and was not as good as a single F3-139. I have staged them too. Problem was i was paying for it out of my pocket with no help so I bailed. this was all about 2 years ago before Reese did his deal. the math seems right, the aplication has not shown itself yet. I have given some quotes on these engines, I am sure it will work, it will just take some deep pockets to do it.
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Hello Steve,
When you say Reese did his and the math seems right are you talking about staged f2s or parallel f2s?
If one had really deep pockets how would you feel about my idea of parallel f3s on a Sonny Leonard 5.3 motor with a 5.080 bore and 4.75 stroke it would give you 770 cubes with a decent ring and rod package and a great set of heads.
PS I don't want you to fund it as this might sway your opinion
Richard Gavle
When you say Reese did his and the math seems right are you talking about staged f2s or parallel f2s?
If one had really deep pockets how would you feel about my idea of parallel f3s on a Sonny Leonard 5.3 motor with a 5.080 bore and 4.75 stroke it would give you 770 cubes with a decent ring and rod package and a great set of heads.
PS I don't want you to fund it as this might sway your opinion
Richard Gavle
Theory says it's the same reason why the modular 4 valve is that much better than the modular 2 valve - two 1" diameter valves flow much more than one 2" diameter valve. Getting the theory to work in a real world application...well, that's the trick we're all trying for here.
It's about volume....Turbos can ramp boost pretty fast under right conditions faster than a blower because blowers are geared/pullied etc. I still feel with the F1R having a 70k rpm vs the F3 being mid 50s it would work better to compound the two and gear where they both reach max rpm at the same engine rpm. This would make the F1R spin much faster down low giving more boost/power before a single F3 would.. With these guys running alky it's no different than a roots pro mod setup stacking 50 psi..... the engine does not know which blower you're running. Even with large boost levels the blowers are not working as hard because it's compounded.
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I thought some of the F3R's had the same basic capabilities as the F4?
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I wonder how the dynamics of engineering a larger compressor wheel affect the progress of the superchargers? I would imagie even with a billet wheel the size becomes a problem, since like so many things you can't just scale it up to double it's original size and expect the problems to only double.
Richard Gavle
Richard Gavle
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Flow gets more complex as the relative airspeed is increasing at the tips. Assuming you run the same kind of RPM's.
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