Why does Vortech make comparable power to ATI ?
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From: Cincinnati, Ohio
Why does Vortech make comparable power to ATI ? If the Vortech blower flows at 800cfm and the ATI is 1450 cfm why does it look like they seem to make similar power and boost? I am not, repeat, am not trying to start an argument about which is better. I am just curious as to why this is. I think I have seen Vortech G-trim guys up to 575 HP and 13lbs. boost. I don't think I have seen the D1SC any higher. Shouldn't the ATI have much higher numbers considering the flow of the head unit? I was just wondering why this is?
P.S. does anybody know what needs to be done to run the 2.75" pulley (where to buy the parts + I heard you have to mod the tensioner mounting?). My car will be running next week (after being down for more or less a year) and I don't have the funds for the T-trim yet so I would like to get the most out of the G-trim for now.
P.S. does anybody know what needs to be done to run the 2.75" pulley (where to buy the parts + I heard you have to mod the tensioner mounting?). My car will be running next week (after being down for more or less a year) and I don't have the funds for the T-trim yet so I would like to get the most out of the G-trim for now.
Re: Why does Vortech make comparable power to ATI ? To be honest I have not seen anybody run the d1 to its fullest cabability(sp). The d1 will make more power than the g-trim just for the sure fact that it put out more airflow than the g-trim. you might see similar hp differences(sp) but that all depends on the setup that person is running. Every setup is not the same. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Re: Why does Vortech make comparable power to ATI ? Total airflow is not what determines the power output of different blowers at the same boost level on the same motor.
The total airflow output just gives you an idea of how much horsepower the blower will support if spun to it's max speed.
Now at Vortech's 800cfm limit the D1SC may be more efficient and show a little more power since it's not even close to being maxed out. Below the limits though hp/psi should be very close if you swapped the headunits out on the same setup.
John
<small>[ February 16, 2003, 11:25 AM: Message edited by: XLR8NSS ]</small>
The total airflow output just gives you an idea of how much horsepower the blower will support if spun to it's max speed.
Now at Vortech's 800cfm limit the D1SC may be more efficient and show a little more power since it's not even close to being maxed out. Below the limits though hp/psi should be very close if you swapped the headunits out on the same setup.
John
<small>[ February 16, 2003, 11:25 AM: Message edited by: XLR8NSS ]</small>
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Re: Why does Vortech make comparable power to ATI ? The D1SC can make a lot of horsepower....i know of a 454bbc with a D1SC making 1100hp on pump gas, granted its a big block but the blower still has to put out the air to fill it
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From: Cincinnati, Ohio
Re: Why does Vortech make comparable power to ATI ? You know I forgot about Speed Inc.s car. I think its over 700hp with the ATI. Now thats seperating the men from the boys.
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From: Columbia, MD
Re: Why does Vortech make comparable power to ATI ? As I said in the "ET/MPH: Vortech vs. ATI" thread, up to 800cfm, the two kits will put down about the same numbers. Now if you can put together a bullet-proof bottom end that can handle 1000+ CFM, well then, thats where the D-1SC starts to shine. The 800cfm that the Vortech V9 G-Trim puts out translates to roughly 575 maximum RWHP. By the same token, the D-1SC's 1400cfm translates to over 900HP, IF you can keep your motor and transmission together, and IF you can keep the supercharger belts from slippping. I don't know about you, but I didn't plan on making an IHRA Super Rod race car, just a street car that looks cool, sounds cool, and is capable of producing a 10-second time slip if necessary.
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From: College Station, Tx
Re: Why does Vortech make comparable power to ATI ? Yep - it depends what you pulley the kits to - most people are *far* from maxing out the D1 series blowers.
If you are going to run 800 or less CFM then the G-trim is a better choice - it should make more power and be quicker - beak boost/flow between the two may be the same, but the G-trim (being optimized for a lower boost rate) will make boost sooner and more of it at a lower rpm. Once you exceed the max impeller speed of the G-trim though you are just making the air hotter, not making any more poewr - then you would be better off with a larger blower.
Chris
If you are going to run 800 or less CFM then the G-trim is a better choice - it should make more power and be quicker - beak boost/flow between the two may be the same, but the G-trim (being optimized for a lower boost rate) will make boost sooner and more of it at a lower rpm. Once you exceed the max impeller speed of the G-trim though you are just making the air hotter, not making any more poewr - then you would be better off with a larger blower.
Chris
