latest ROTARYSHACK 12a t blow through
#26
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looks good!
The only criticism I have (and it's a small one) is the Dynamic Effect Chamber atop the engine is square. On the 2nd gens they switched to a rounded-top DEI (Dynamic Effect Intake - they changed the name, too) to better manage the intake pressure waves between the two rotor chambers.
The boxy version used in the 13B in the GSL-SE was fine for N/A applications, but the turbocharger requires more careful intake tuning due to any problems with pulse wave interferance being magnified by boosted air.
The only criticism I have (and it's a small one) is the Dynamic Effect Chamber atop the engine is square. On the 2nd gens they switched to a rounded-top DEI (Dynamic Effect Intake - they changed the name, too) to better manage the intake pressure waves between the two rotor chambers.
The boxy version used in the 13B in the GSL-SE was fine for N/A applications, but the turbocharger requires more careful intake tuning due to any problems with pulse wave interferance being magnified by boosted air.
#27
I can has a Hemi? Yes...
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Originally posted by Manntis
looks good!
The only criticism I have (and it's a small one) is the Dynamic Effect Chamber atop the engine is square. On the 2nd gens they switched to a rounded-top DEI (Dynamic Effect Intake - they changed the name, too) to better manage the intake pressure waves between the two rotor chambers.
The boxy version used in the 13B in the GSL-SE was fine for N/A applications, but the turbocharger requires more careful intake tuning due to any problems with pulse wave interferance being magnified by boosted air.
looks good!
The only criticism I have (and it's a small one) is the Dynamic Effect Chamber atop the engine is square. On the 2nd gens they switched to a rounded-top DEI (Dynamic Effect Intake - they changed the name, too) to better manage the intake pressure waves between the two rotor chambers.
The boxy version used in the 13B in the GSL-SE was fine for N/A applications, but the turbocharger requires more careful intake tuning due to any problems with pulse wave interferance being magnified by boosted air.
In a Turbo, the air will get pushed wherever it needs to go, since it is being forced in, instead of sucked in. It's not as important as in N/A applications, becuse there really isn't the same type of pressure waves generated. Of course smooth, long runners, and a large volume intake are preferred, but not necessary.
#28
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intake pressure in the N/A, with the redesigned intake, was measured at 2psi an affectionately called "pulse-positive charging". However, they did intend it to augment the Turbo version as well (remember, turbos are only under boost part of the time, whereas this passive boost is an always-on pressure effect)
#29
I can has a Hemi? Yes...
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Originally posted by Manntis
intake pressure in the N/A, with the redesigned intake, was measured at 2psi an affectionately called "pulse-positive charging". However, they did intend it to augment the Turbo version as well (remember, turbos are only under boost part of the time, whereas this passive boost is an always-on pressure effect)
intake pressure in the N/A, with the redesigned intake, was measured at 2psi an affectionately called "pulse-positive charging". However, they did intend it to augment the Turbo version as well (remember, turbos are only under boost part of the time, whereas this passive boost is an always-on pressure effect)
I agree with you by the way, but I am also agreeing with 680, stating that in a Turbo application, the difference in power from a square (and easy to build/design) plenum as compared to a countoured one would not be worth the extra effort - unless you exhausted all other means od increasing power.
#31
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directfreak quote;
In a Turbo, the air will get pushed wherever it needs to go, since it is being forced in, instead of sucked in. It's not as important as in N/A applications, becuse there really isn't the same type of pressure waves generated. Of course smooth, long runners, and a large volume intake are preferred, but not necessary.
I agree with you by the way, but I am also agreeing with 680, stating that in a Turbo application, the difference in power from a square (and easy to build/design) plenum as compared to a countoured one would not be worth the extra effort - unless you exhausted all other means od increasing power.
good points directfreak!!!
I also think the plenum shape not being as critical on carburated applications because as the possibly turbulent airflow goes through the carburator , venturies, aux. venturies fuel mixing with air etc... its sort of redirected...a fuel injected car has minimal restrictions in the intake thus not affecting the turbulent air flow ..thus needing a superior design to get optinum air flow chararcteristcs.. usally in EFI systems the injectors are close to the intake port so you want even air flow to each port (so one port is not leaner than another) so plenum/ intake systems are more critical on EFI cars......
In a Turbo, the air will get pushed wherever it needs to go, since it is being forced in, instead of sucked in. It's not as important as in N/A applications, becuse there really isn't the same type of pressure waves generated. Of course smooth, long runners, and a large volume intake are preferred, but not necessary.
I agree with you by the way, but I am also agreeing with 680, stating that in a Turbo application, the difference in power from a square (and easy to build/design) plenum as compared to a countoured one would not be worth the extra effort - unless you exhausted all other means od increasing power.
good points directfreak!!!
I also think the plenum shape not being as critical on carburated applications because as the possibly turbulent airflow goes through the carburator , venturies, aux. venturies fuel mixing with air etc... its sort of redirected...a fuel injected car has minimal restrictions in the intake thus not affecting the turbulent air flow ..thus needing a superior design to get optinum air flow chararcteristcs.. usally in EFI systems the injectors are close to the intake port so you want even air flow to each port (so one port is not leaner than another) so plenum/ intake systems are more critical on EFI cars......
Last edited by 680RWHP12A; 12-29-02 at 03:09 AM.
#33
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Hey, I am about to also put a turbo on to my 12a but wheres the best area to tap into for the oil lines that run to the turbo, also the coolent lines?
Thanks,
Jason
Thanks,
Jason
#35
Banned. I got OWNED!!!
Thread Starter
the dellorto carbs dont respond well to turbocharging for several reasons ....no avail. emulsion tubes, very limited fuel jets and no air corrector jets are available!!also the needle valve is too small and no larger ones are avail.the best thing for you to do is to sell the dellorto and buy a weber. they are not too expensive and work much better!