Is roots style that much better than centrifugal
09-15-2003, 06:37 PM
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Re: Is roots style that much better than centrifugal
Better, roots makes low end but falls off on the big end...For your application you will have low end grunt from the stroker, but the big end charge of a centrifugal. Most lil roots are good to 8 pounds some alil more but Prochargers, Vortechs you can get mad boost up to 35pounds of boost in some models....
Your camshaft choice has something to do with the boost you run too...
I'm seeing more than 8lbs on my 427 with a Radix
so a guess the lil thing is do'in lil better than you thunk huh.. 
09-15-2003, 10:32 PM
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Re: Is roots style that much better than centrifugal
Hey Ripped427 have you taken the SS to the track yet?
09-15-2003, 11:23 PM
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Re: Is roots style that much better than centrifugal
I'm guessing FPR=fuel pressure regulator, if that's the case, then that is not correct. The pressure regulator is pulled from the factory intake and swapped over.
The fuel pressure regulator is same as stock .. maybe it's the second pump kicking in making the pressure raise up so high.
The fuel pressure regulator is same as stock .. maybe it's the second pump kicking in making the pressure raise up so high.
09-17-2003, 12:13 AM
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Re: Is roots style that much better than centrifugal
The fuel pressure regulator is same as stock .. maybe it's the second pump kicking in making the pressure raise up so high.
09-18-2003, 03:56 AM
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Re: Is roots style that much better than centrifugal
The regulator is inside that aluminum block (kinda L shaped) on the drivers side fuel rail where the fuel lines come in. It is the little button looking thing. It has a C-clip holding it in if that helps. It's kind of a dingy brown color.
It operates off of vacuum pressure. As the vacuum pressure rises, it closes the diaphram inside the regulator causing less fuel to go into the return line until it is eventually closed. Mine reached max fuel PSI at about 3 pounds of boost, or about 45-50% throttle.
If you showed me a picture of it, I could point it out for ya.
Maybe someone who knows more than I do can come in here and confirm that or tell me I'm wrong, and/or how bad wrong I am.
It operates off of vacuum pressure. As the vacuum pressure rises, it closes the diaphram inside the regulator causing less fuel to go into the return line until it is eventually closed. Mine reached max fuel PSI at about 3 pounds of boost, or about 45-50% throttle.
If you showed me a picture of it, I could point it out for ya.
Maybe someone who knows more than I do can come in here and confirm that or tell me I'm wrong, and/or how bad wrong I am.
09-18-2003, 10:32 PM
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Re: Is roots style that much better than centrifugal
The regulator is inside that aluminum block (kinda L shaped) on the drivers side fuel rail where the fuel lines come in. It is the little button looking thing. It has a C-clip holding it in if that helps. It's kind of a dingy brown color.
It operates off of vacuum pressure. As the vacuum pressure rises, it closes the diaphram inside the regulator causing less fuel to go into the return line until it is eventually closed. Mine reached max fuel PSI at about 3 pounds of boost, or about 45-50% throttle.
If you showed me a picture of it, I could point it out for ya.
Maybe someone who knows more than I do can come in here and confirm that or tell me I'm wrong, and/or how bad wrong I am.
It operates off of vacuum pressure. As the vacuum pressure rises, it closes the diaphram inside the regulator causing less fuel to go into the return line until it is eventually closed. Mine reached max fuel PSI at about 3 pounds of boost, or about 45-50% throttle.
If you showed me a picture of it, I could point it out for ya.
Maybe someone who knows more than I do can come in here and confirm that or tell me I'm wrong, and/or how bad wrong I am.
Wright or Wrong I was on the right track 
