Aggressor vs American Turbine
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Aggressor vs American Turbine

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    Senior Member vmaxed's Avatar
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    Default Aggressor vs American Turbine

    Has anyone gone from an Aggressor "A" to an American Turbine "A" or versa visa and what were the end perfomance results???? Does it take the same HP to turn an Aggressor A 6000 as it does to turn an American Turbine AA 6000 and witch one would have more MPH?
    "DON'T JUST TELL ME IT WON'T WORK TELL ME WHAT WILL"

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    Senior Member H20MOFO's Avatar
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    Quote Originally Posted by vmaxed View Post
    Has anyone gone from an Aggressor "A" to an American Turbine "A" or versa visa and what were the end perfomance results???? Does it take the same HP to turn an Aggressor A 6000 as it does to turn an American Turbine AA 6000 and witch one would have more MPH?
    Unless I am mistaken.... an aggressor A cut is = to and AT AA cut....they are 1 cut "taller" so to speak.
    edit...guess you already new that...on the cut.
    Last edited by H20MOFO; 04-23-2012 at 03:27 PM.
    Another Hot Boat refugee

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    You should see an increase in RPM's by around 400 (Up) in across the board exchange.

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    Senior Member vmaxed's Avatar
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    Default Cut to a "b"

    Quote Originally Posted by [email protected] View Post
    You should see an increase in RPM's by around 400 (Up) in across the board exchange.
    Pops if I were to cut my Aggessor A to a B what RPM and MPH gain you think I might see?
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    You need to give a bit more info, what are you running for power and what do you want to achieve? If you cut that A to a B you will see an increase of approx 400 RPM across the power band and a little more speed at the top. Hey Davey, how are you doing? All is well on your end I hope. I,ll be callin ya. jim

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    Senior Member tigertooth's Avatar
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    [QUOTE=Performance Jet;1620572]You need to give a bit more info, what are you running for power and what do you want to achieve? If you cut that A to a B you will see an increase of approx 400 RPM across the power band and a little more speed at the top. Hey Davey, how are you doing? All is well on your end I hope. I,ll be callin ya. jim [400 rpm from an A to a B. Interesting. Never had that happen no matter who's impeller it was. Please elaborate on how this would be possible.

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    Senior Member vmaxed's Avatar
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    Default More info

    Quote Originally Posted by Performance Jet View Post
    You need to give a bit more info, what are you running for power and what do you want to achieve? If you cut that A to a B you will see an increase of approx 400 RPM across the power band and a little more speed at the top. Hey Davey, how are you doing? All is well on your end I hope. I,ll be callin ya. jim
    It’s a mid weight TX19 with a 13.7/1 555with Canfield heads(350cc) two 750,s cam is 270ish @ 50 and .700 with 110LS.The pump has an open loader, inducer, A Aggressor impeller Place Diverter ½ droopand 3.125 bushing. It turned 5800 RPMs and ran 95 MPH deep down I thought itwould turn 6000 and run close to a 100.
    "DON'T JUST TELL ME IT WON'T WORK TELL ME WHAT WILL"

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    Quote Originally Posted by tigertooth View Post
    400 rpm from an A to a B. Interesting. Never had that happen no matter who's impeller it was. Please elaborate on how this would be possible.

    what impellers have you tried? what bowls have you tried? Jims been doing a long time and knows his stuff. just sayin.

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    Quote Originally Posted by Spiritof76Cobra View Post
    what impellers have you tried? what bowls have you tried? Jims been doing a long time and knows his stuff. just sayin.
    Hey Bud, Tigertooth knows his way around wingers! other hulls as well,Stick around, get a pen and paper ready, Take some notes!

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    You know, I am not going to get into a BS argument over impeller sizing vs RPM curves, its already been done. I am just trying to help this guy and give him some ideas. Tigertooth has his views based on his experience and is obviously a sharp guy. I really respect that. I have my view point, as well, based on 30 plus years of building jets for all kinds of people. In doing so, It has always been a common practice to size impellers to specific engine combinations and RPM needs, this is nothing new. As far as vmax goes, something does not sound quite right with the RPM of 5800 with all he has into the motor, IMO. Was this motor dynoed? It would be nice to have real numbers to work with here., At any rate , with the cam that he is using, I feel that the motor may not be seeing its maximum potential, just my opinion. I believe that the power band of that cam may reach up as far as 7000 RPM , correct me if I am wrong, just guessing here. If so I believe that cutting the Aggressor A down to a B would net a load more of RPM, if the motor is making its power. I built a Level III jet for a customer running a Dynoed 496, inderall injected Chevy in a 19 Daytona ( 640HP ) with a B cut Aggressor mag bronze and he turned 107MPH @ 6400 RPM. The bottom line is that we can argue facts and examples all day long and it does not provide any answers, everybody has thier own legitimate story to tell. If vmax really wants to find the answer, he has to do some testing, every boat is different. Maybe he should install a B cut Aggressor and find out how that would change his numbers. I would not be suprised if he increased his R's 400 or even more. Assuming, of course, that his motor is continuing to build power in that RPM range and doesn't fall on its face. I would bet a dinner on it.. but , I have been wrong before. I can live with that, no problem. Just my humble opinion...Jim

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    Senior Member vmaxed's Avatar
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    Default Less is more

    Quote Originally Posted by performance jet View Post
    you know, i am not going to get into a bs argument over impeller sizing vs rpm curves, its already been done. I am just trying to help this guy and give him some ideas. Tigertooth has his views based on his experience and is obviously a sharp guy. I really respect that. I have my view point, as well, based on 30 plus years of building jets for all kinds of people. In doing so, it has always been a common practice to size impellers to specific engine combinations and rpm needs, this is nothing new. As far as vmax goes, something does not sound quite right with the rpm of 5800 with all he has into the motor, imo. Was this motor dynoed? It would be nice to have real numbers to work with here., at any rate , with the cam that he is using, i feel that the motor may not be seeing its maximum potential, just my opinion. I believe that the power band of that cam may reach up as far as 7000 rpm , correct me if i am wrong, just guessing here. If so i believe that cutting the aggressor a down to a b would net a load more of rpm, if the motor is making its power. I built a level iii jet for a customer running a dynoed 496, inderall injected chevy in a 19 daytona ( 640hp ) with a b cut aggressor mag bronze and he turned 107mph @ 6400 rpm. The bottom line is that we can argue facts and examples all day long and it does not provide any answers, everybody has thier own legitimate story to tell. If vmax really wants to find the answer, he has to do some testing, every boat is different. Maybe he should install a b cut aggressor and find out how that would change his numbers. I would not be suprised if he increased his r's 400 or even more. Assuming, of course, that his motor is continuing to build power in that rpm range and doesn't fall on its face. I would bet a dinner on it.. But , i have been wrong before. I can live with that, no problem. Just my humble opinion...jim

    needs less cam and impeller more or less
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    Quote Originally Posted by vmaxed View Post
    needs less cam and impeller more or less
    To me, it depends..where is the power band on your motor? Jim

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    Senior Member bp298's Avatar
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    Quote Originally Posted by Performance Jet View Post
    I would not be suprised if he increased his R's 400 or even more. Assuming, of course, that his motor is continuing to build power in that RPM range and doesn't fall on its face. I would bet a dinner on it.. but , I have been wrong before. I can live with that, no problem. Just my humble opinion...Jim
    and, like tigertooth, i'd be shocked. 175-225 rpm increase, as long as the hp curve is still climbing, similar water and d/a. unless of course, it is a pos impeller and the tolerances are all jacked up.
    and thanks, i'll take my steak medium rare

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    Quote Originally Posted by bp298 View Post
    and, like tigertooth, i'd be shocked. 175-225 rpm increase, as long as the hp curve is still climbing, similar water and d/a. unless of course, it is a pos impeller and the tolerances are all jacked up.
    and thanks, i'll take my steak medium rare
    I'd love to buy ya a steak. If your up this way give me a call. I'd still like to see the numbers though...I'm always learning.

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