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

Drivetrain RMW stroker (aka air-sucky-thingy)

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Old Jan 22, 2009 | 02:45 PM
  #151  
BlimeyCabrio's Avatar
BlimeyCabrio
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From: Holly Springs, NC
Originally Posted by ingsoc
The M45 with 17% pulley only makes like 11psi right now .
That's just crazy...
Gotta love engines that know how to *flow*.
 
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Old Jan 22, 2009 | 04:48 PM
  #152  
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Vernon29RW
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From: Pat-Med, NY
WOW 11 psi! And you can't really do much more with that thing to increase the psi either since it's already 17% smaller right? Anything smaller would create so much heat the blower would overheat and probably blow up no? not to mention all the increased hot air needs to be cooled, and we know how much of a problem that can be!!
 
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Old Jan 22, 2009 | 08:28 PM
  #153  
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ingsoc
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From: New Brunswick, NJ
Originally Posted by Vernon29RW
WOW 11 psi! And you can't really do much more with that thing to increase the psi either since it's already 17% smaller right? Anything smaller would create so much heat the blower would overheat and probably blow up no? not to mention all the increased hot air needs to be cooled, and we know how much of a problem that can be!!
There are plenty of people running 17% pulleys on regular engines. They don't die, as plenty of people know. The thing is, they do create more heat, which robs power. It makes less heat with the stroker since heat increase with pressure, so it's more efficient on my engine than on stock, but it can't flow enough air to feed the bigger block optimally. So yeah, gotta get a bigger supercharger!
 
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Old Jan 22, 2009 | 08:55 PM
  #154  
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Maleficent
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From: Hesperia, Ca
You would probably be okay running a 19%, but you would have to bring the rev limit down. With Jan's head and exhaust our 17% only puts out 14lbs of boost. Danny runs a 19%, but he also has W2A.
 
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