Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain What are the 300+whp cars doing for fuel systems

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Old Aug 31, 2005 | 05:36 PM
  #26  
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bouray
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Don't want to speak for others, but from other threads, I believe his is wet where the extra fuel for the nozzle is taken off the end of the fuel rail. That's why he's interested in the fuel delivery issue.
 
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Old Aug 31, 2005 | 07:31 PM
  #27  
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spillman
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From: Rutherfordton, NC
Originally Posted by isellem
spillman are you running a wet shot or a dry shot... i can't recall
I run a wet shot. I would never put a dry shot on my car.
 
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Old Aug 31, 2005 | 07:40 PM
  #28  
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ingsoc
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From: New Brunswick, NJ
Originally Posted by spillman
I run a wet shot. I would never put a dry shot on my car.
why not? [I know little about nitrous, so humor me...]
 
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Old Aug 31, 2005 | 07:55 PM
  #29  
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spillman
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From: Rutherfordton, NC
Originally Posted by ingsoc
why not? [I know little about nitrous, so humor me...]
The biggest thing with a dry shot is that you are relying on the fuel injectors to supply the fuel. Getting more power from the nitrous means stepping up the injectors. Which in turn means when you are not using the nitrous you have injectors that are way to big. Also if the injectors can't keep up or if the ECU doesn't make a modification to the injector pulse then you have a very big lean out. And that will lead to melting a piston and lots of detonation (not good).

With a wet system you simply have two solenoids that are activated at exactly the same time. Both the fuel and the nitrous go in at the exact same place. Also as long as you have the bottle pressure the same you can run very consistent A/F. If you are running rich or lean simply put a smaller or larger jet in it.
 
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Old Aug 31, 2005 | 08:07 PM
  #30  
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ingsoc
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From: New Brunswick, NJ
thanks .
 
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Old Sep 1, 2005 | 02:43 PM
  #31  
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isellem
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From: out and aboot
yeah... i wasn't sure so i asked... because if you were runninga dry shot and making 300hp... then you could have easily switched to a wet shot and been fine... but you already have a wet shot... so yeah... their ya go...



also... dry shots arent the devil... at least not completly... you can run very small shots of nitrous through a dry shot and have it be reliable... but the wet shot is really the way to go...
 
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Old Sep 5, 2005 | 01:15 AM
  #32  
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Vertigo
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From: San Antone YEE HAW
Originally Posted by Maximusmini
750cc is wuite rediculous and non usable.. unless of course you put a DSM motor in...
I SWEAR!!! If anyone can develope THIS swap... People would/should flock to this motor. Best 4cyl ever IMO. 611whp on stock internals was highest last i heard. Highest is maybe something like 1000-1100whp fully built, and still going up.

Ok back on topic
 
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Old Nov 1, 2007 | 02:26 PM
  #33  
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ChrisMCS04
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From: Defiance, Ohio
I am bumping this because I found it very interesting.
 
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Old Nov 1, 2007 | 02:28 PM
  #34  
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ChrisMCS04
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From: Defiance, Ohio
Also, if anyone wants to chime in with an answer to the fuel rail question that would be great.
Thanks guys, Chris.
 
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