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Old 12-03-2012, 09:02 AM   #1
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No parasitic loss from a turbo = BS

A turbo uses exhaust gas to drive the system. This is created from a piston doing and exhaust stroke. It is using crankshaft force to drive the system, same as a supercharger. It may be less than a direct belt driven system but it is there and it is significant.
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Old 12-03-2012, 09:40 AM   #2
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I dont think a turbos parasitic loss is nearly as significant as a supercharger. Just compare power per pound of boost between the 2 systems and you would see that.
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Old 12-03-2012, 10:25 AM   #3
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I dont think a turbos parasitic loss is nearly as significant as a supercharger. Just compare power per pound of boost between the 2 systems and you would see that.
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Old 12-03-2012, 10:30 AM   #4
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You don't know what you're talking about...
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Old 12-03-2012, 10:32 AM   #5
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Old 12-03-2012, 11:53 AM   #6
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This is a somewhat random post, sounds like you kind of figured out how a turbo works compared to a supercharger so you want to tell us about it. Both have their advantages but a turbo definitely has the upper hand in this department.
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Old 12-03-2012, 12:02 PM   #7
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Is this a troll thread? It has to be. You can't seriously be trying to make this argument.

.... And this is coming from a supercharger guy.
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Old 12-03-2012, 12:07 PM   #8
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Okay.
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Old 12-03-2012, 02:51 PM   #9
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Absolutely there's parasitic loss from a turbo. It's just miniscule compared to the loss from a belt driven supercharger. Does that mean that turbos are the answer for all things f/i. Hell no. They're the answer here and they're the answer there.....but they're not, by any means, the answer everywhere.
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Old 12-03-2012, 02:55 PM   #10
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thats like saying that a nitrous system will make your car slower because it ads weight...
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Old 12-03-2012, 03:19 PM   #11
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Old 12-03-2012, 04:24 PM   #12
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This isn't a troll thread. I made it in response to the general feeling on here that a Turbo doesn't take any power to run.
I saw a chart elsewhere that showed a turbo taking 18ft lbs of torque from an engine and a roots taking 38.
Quite a difference yes, but it is not miniscule.
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Old 12-03-2012, 04:40 PM   #13
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Quote:
Originally Posted by willhe64 View Post
This isn't a troll thread. I made it in response to the general feeling on here that a Turbo doesn't take any power to run.
I saw a chart elsewhere that showed a turbo taking 18ft lbs of torque from an engine and a roots taking 38.
Quite a difference yes, but it is not miniscule.
It is not significant either and no where close to what a supercharger takes away. The amount of power that is lost to drive a turbo is a VERY small percentage of what it gains. So small in fact that I am not even sure its worth mentioning.
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Old 12-03-2012, 05:25 PM   #14
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It is not significant either and no where close to what a supercharger takes away. The amount of power that is lost to drive a turbo is a VERY small percentage of what it gains. So small in fact that I am not even sure its worth mentioning.
it also can depends on the actual turbo setup. If you got Cermic ball bearing turbos that barely take anything to spin, it will take less force then older style journal bearing turbos as well. Still though even with that it is still minimal compared to any belt driven blower.

i have seen a twin turbo vetter that was just idling for 10 minutes turn its engine off and the turbos continued spinning for approximately 30-45 sec after the car was shut off. You cant tell me that requires much effort to spin those up. (it was a pair of GT35R's for anyone curious)
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