091 6 rib gearbox question

Discuss VW transaxles and transmissions. Gearheads wanted!

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091 6 rib gearbox question

Post by lakis1982 » Fri May 18, 2018 4:39 am


i have a 091 gearbox code DK that i plan to fit on my karmann ghia using the nose conversion kit from Weddle industries. Those 091 gearboxes as far as i know are considered to be very tough and durable. My ghia uses an oxyboxer turbo EFI engine of around 280PS and 320Nm (street use only).

The DK gearbox has a 4.57 ring-pinion , 1st 3.78, 2nd 2.06, 3rd 1.26, 4th 0.82

My question: If we suppose that the gear ratios are suitable, could you tell me how much abuse those gearboxes can handle ?? Could i use it as is in stock form without major problems ???

Thank you in advance

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Re: 091 6 rib gearbox question

Post by Pablo2 » Fri May 18, 2018 9:01 am

I hesitate to guess at how you drive your car, but I will point out that the VW engineers went with stronger 3rd & 4th gears in the later waterboxer transaxles.
aka Pablo, gears, Geary
9.36 @ 146 in '86

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