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Old 03-28-2007, 08:02 PM   #1
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Anyone put a 6 Speed to a 2.5?

I am probably going to need a tranny so..
Ratio issues or anything like that?
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Old 03-28-2007, 11:57 PM   #2
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Maybe if yer gonna get forced induction or something later on for the engine. But a car with the stock tranny might be easier to sell...

-David
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Old 03-29-2007, 05:03 AM   #3
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HI,

There is a Big difference in the ratios between the 5-spd. for the 2.5L and the 3.2L 6 spd. -
  • 5-speed (G86.00)
    2.5L
    1st gear - 3.50
    2nd gear - 2.12
    3rd gear - 1.43
    4th gear - 1.03
    5th gear - 0.79
    Final Drive - 3.89

    5-speed (G86.01)
    2.7L
    1st gear - 3.50
    2nd gear - 2.12
    3rd gear - 1.43
    4th gear - 1.09
    5th gear - 0.84
    Final Drive - 3.56

    6-speed (G86.20)
    3.2L
    1st gear - 3.82
    2nd gear - 2.20
    3rd gear - 1.52
    4th gear - 1.22
    5th gear - 1.02
    6th gear - 0.89
    Final Drive - 3.44

Happy Motoring!... Jim'99

Last edited by MNBoxster; 03-29-2007 at 05:09 AM.
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Old 03-29-2007, 05:10 AM   #4
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I am planning in the future.. Later this year, to put either a 3.4 in it or the IA charger on it. I am not planning on selling my box anytime soon.
Thanks for the replies
J
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Old 03-29-2007, 05:25 AM   #5
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I know this is not the question you asked, but I've heard a lot of people say that the 6-speed in the Boxster, despite the cool-factor, is not a great transmission compared to the 5-speed, and that many "S" owners would actually prefer to have the option of taking the 5-speed. Just something to think about.
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Old 03-29-2007, 05:57 AM   #6
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I did notice that too, that S owners were saying that also. Besides, S trans- 3500.00
2.5 trans - 1500.00 KISS keep it simple stupid. Thats what I go by.

Thanks for your input.
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Old 03-29-2007, 07:52 AM   #7
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Hi,

Don't know if it's a quality issue or not. IIRC, the 6-Spd. is from a Japanese Supplier while the 5-Spd. is a ZF Getrag.

Not banging the Japanese because they have come on strong in quality transmission in the past few years. JATCO (literally Japanese Automatic Transmission Co.) makes the Tranny in my wife's Jag and it's a great unit...

Happy Motoring!... Jim'99
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