Engine Drivetrain 1st Gen Cooper S 15% vs 17% Pulley

Discussion in 'Tuning and Performance' started by goaljnky, Jul 30, 2009.

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  1. mini_racer

    mini_racer Well-Known Member

    May 4, 2009
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    Oh well yeah, if Danny is the surgeon then the procedure will be completed flawlessly and in record time. Great hands for sure.
     
  2. goaljnky

    goaljnky New Member

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    And he lets me drink his beer. :cornut:
     
  3. Batrugger

    Batrugger New Member

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    You can't go wrong with the Cravens that he stocks and you have to love those delivery sandwiches
     
  4. mini_racer

    mini_racer Well-Known Member

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    The Craven pulley is quality for sure, but too heavy IMO. With an Al pulley you can also reduce your rotating mass, every little bit helps.
     
  5. Nathan

    Nathan Founder

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    Ahh the great pulley weight debate...

    Lighter will spool up nano-seconds faster using less HP to spin.

    Heavier is more stable and helps to dampen vibrations some

    The degree that these things are effected are so small that only the most OCD person that is finely tuned and in touch with each and bit of the car will even notice them.

    You can't go wrong with a Craven, WMW, Detroit Tuned or Helix pulley. All are well made and will last forever.
     
  6. mini_racer

    mini_racer Well-Known Member

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    Yeah yeah, I know............
    While I am somewhat OC, I do not not consider it a D, thank you very much. And I am sure I could not tell the difference between Al an SST. Sometimes we do things that are good/better, even if just in theory. :lol:
     
  7. dustinhxc

    dustinhxc New Member

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    I have a 17% Alta Pulley and Love it! Pulls So hard! With Alta 17% Pulley, Napa 535 Belt, Tens Stop, Alta Cai/Silicone Tube, MSD Ignition Coil, JCW Plugs, Kingsborne Plug Wires, Magnaflow custom exhaust, and DTBPV I make 17psi and it def pulls harder
     
  8. MerchoMini

    MerchoMini New Member

    Jul 22, 2009
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    Go with the 15%,althier for your s/c while giving u more power, end of story in opinion, jcw pulley is indeed 11-12%. A retune would allow u to maximize its use of course, but i am wondering how much difference it would actually make, let us know if u do
     
  9. goaljnky

    goaljnky New Member

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    Well, I went to see Danny this weekend. Went something like this:

    Me: Sup you long haired Armenian
    Him: Sup, you crazy Russian
    Me: Put a 15% pulley on
    Him: Go with 17%
    Me: I don't want a 17, I want a 15
    Him: There is no sense to go from 12 to 15. I get more by going to 17.
    Me: But I rev too high and Nate said 17 is not good for that
    Him: blah blah blah 17
    Me: But I want to retain street drivability for the wife
    Him: blah blah blah 17

    This went on for a few hours and continued late into the night over some beers, pizza and sandwiches. I still have the JCW pulley on. What now?
     
  10. Batrugger

    Batrugger New Member

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    Sounds like a good day at Danny's. Little Ceasers and Armenian Tortas :Thumbsup:. If you put a 17% on the car it will be alright. We have the 17% because we have the bigger valve head and the GP intercooler to counter the increased heat that occurs. Jan will just dial back your rev limit when you get it re-tuned. He dropped ours from 8000 rpm to 7200 rpm to counter the increased rotation after we had it installed. I must say i do miss the car screamin like a banshee at 7900 rpm.
     
  11. dustinhxc

    dustinhxc New Member

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    Hey go with the 17% ! I love mine.
     
  12. goaljnky

    goaljnky New Member

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    Already got the GP intercooler. The limiter has been at 7200 forever.
     
  13. Nathan

    Nathan Founder

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    Compromise, get the M7 16%.
     
  14. mini_racer

    mini_racer Well-Known Member

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    Nate has the perfect solution. :D
     
  15. Batrugger

    Batrugger New Member

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    I forgot that you had the GP intercooler. Your set then. Jan will probably give you a little grief, but you see Danny a lot more than him. :D
     
  16. jiminni

    jiminni Well-Known Member

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    I agree :smilewinkgrin:
     
  17. goaljnky

    goaljnky New Member

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    I think I will leave that one alone. :cool:
     
  18. jiminni

    jiminni Well-Known Member

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    :lol: Are you mellowing in your old age :wink5:
     
  19. goaljnky

    goaljnky New Member

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    Of course not. Just taking better meds. :ihih:
     
  20. Kellen@Craven

    Kellen@Craven New Member
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    May 4, 2009
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    I've got an aluminum 15% we found in a display box. Maybe you could make both Danny and Jan mad at once. I don't know about Nate, but I might be OCD enough to notice the speed spooling action.
     

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