How big are the BIG turbos you guys are running?
10-28-2004, 03:33 PM
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How big are the BIG turbos you guys are running? How big physically are the big turbos folks are running?
And the size of the turbo, like a 88mm, is that the size of the impeller?
And the size of the turbo, like a 88mm, is that the size of the impeller?
10-28-2004, 03:35 PM
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Originally Posted by Pro Stock John
How big physically are the big turbos folks are running?
And the size of the turbo, like a 88mm, is that the size of the impeller?
And the size of the turbo, like a 88mm, is that the size of the impeller?
thats how many M&Ms they eat in a minute..
10-28-2004, 03:47 PM
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John, I can get you all the info you need. We deal with DR class cars and some of the cheater turbos. Most are running 88mm inducers, but most of the big turbo guys are running cheater class units, which are 91's and 94's shaved down. Physically....here you go...
Jose
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10-28-2004, 04:40 PM
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Why is it that Turbos can make much more power( and move more air) than blowers with the same size inducers? For instance my G-trim Vortech has about a 78mm inducer. Max rpm of about 65,000 to maybe 70,000 for my Unit. I suspect the rpm limit for the superchargers is mainly for the gear drive drive system, but which also limits how much flow it's capable of with a given impeller size.
A turbo with that same size inducer seems to be able to flow much more air.
Is this because the turbo can spin a lot faster and thus move more air with the same size inducer?
Steve
A turbo with that same size inducer seems to be able to flow much more air.
Is this because the turbo can spin a lot faster and thus move more air with the same size inducer?
Steve
10-28-2004, 07:25 PM
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Good point also Harlan, a blower drags a good bit on the motor. A probably built setup is only going to see a 2:1 backpressure ratio rise, which is not much of a restriction. Now a log style setup can see as high as 4:1 backpressure ratio which robs hp from the turbo setup, but its still going to be as good or better then a blower.
Jose
Jose
10-28-2004, 08:28 PM
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Originally Posted by PRAY HRD
i've heard a blower setup making in excess of 1600 hp, can be robbing as much as 300 hp at the flywheel!!!
Dave
Dave
bleh... I guess thats the price you pay for instant power. I don't really get it though. Superchargers are cool, but our motors are pushing enough air to bring lag to a minimum. I personally went turbo and I'm happy with my decision.
10-29-2004, 08:27 AM
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Let's not forget the HP needed to actually spin the blower is alot more than you lose from the backpressure created by the turbo.
Looks like Turbos simply are the top dawg. The turbos made more power over the Eaton than the Eaton did over N.A. at the same psi!
That is pretty impressive!
Steve