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Old 07-14-2007, 12:25 AM   #1
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HP limits for boxter transmissions, what are they?

Hi all,

Does anyone know what the power and torque limits are for the boxter and boxter S transmissions?

I am after a gearbox that can handle around 450rwhp, so thats probably around 530-550 at the crank. I was looking at the G50 or a 930 box, but there are advantages like price, size and weight that the boxter transmission has going for it.

Cheers,
Ian Swinkels.

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Old 07-14-2007, 06:30 AM   #2
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The boxster S uses the same 6 speed as the 911 so it could definately handle more than what the stock motor has, but I'm not sure what the limit is. What are you throwing this transmission into?
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Old 07-14-2007, 06:48 AM   #3
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i just want to know how you will make a boxster have 500hp
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Old 07-14-2007, 07:03 AM   #4
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Quote:
Originally Posted by blkboxster
i just want to know how you will make a boxster have 500hp
I don't think he has a boxster. I think he is just looking for a tranny.
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Old 07-14-2007, 07:37 AM   #5
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Quote:
Originally Posted by Adam
I don't think he has a boxster. I think he is just looking for a tranny.
oh, that makes more sense thanks
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Old 07-14-2007, 09:47 AM   #6
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Somewhere on the net a long time ago I saw something that had the torque ratings of different transmissions. But I do not remember where.

The Boxster manual transmissions are made by Getrag. Maybe if you ask Getrag they will give you the specs.
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Old 07-14-2007, 06:48 PM   #7
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try www.wevo.com they would probaly be able to tell you which ones can handle the torque as well as which ring gears are available as they are different in the 986 versus the 911 due to motor placement. The other options would be guard trans or Powerhaus.
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Old 07-18-2007, 12:12 AM   #8
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Hi guys, thanks for the replies.

The engine is an autocraft vw style air cooled engine, twin turbo'd. Revs to 8500 with 25-28lb boost and produces close on 500 crank hp. All racing parts.

Its so hard to get good information about the boxter transmissions. The real experts are pretty tight lipped about whats possible. It might just be easier to go with a G50 and wear the cost of a few extra thousand, and enjoy some piece of mind that i'll probably never break it.

Cheers,
Ian

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