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GT40 Tech - Powertrain/Transaxles Transaxles and driveline - don't dare post engine things here!

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Old 8th September 2017, 09:05 AM   #1
DJ
don Jost
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Join Date: Dec 2016
Location: ms. usa
GT40: lola t 70
Posts: 3
where are the Nrs ?

Can anyone tell me where I can find the O1e,O16 etc designation on an audi gearbox? Thanks DJ
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Old 8th September 2017, 02:36 PM   #2
tednphx
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Join Date: Jan 2013
Location: Goodyear, AZ
GT40: CAV#40, 54Vette
Posts: 93
Re: where are the Nrs ?

The gearbox identification is located on the starboard side of the tranny on the side of the blackened section of the unit. you should find a number like 016301211C. This number will vary depending on the model of the gearbox.


On the top forward area you should find a designator like AAZ or APU. There many of these codes that tell you what the gears and final ratio of the box are. You can search the forum threads for a listing of the code you find on your box.
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Old 8th September 2017, 10:03 PM   #3
Cliffbeer2
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Join Date: Jun 2007
Location: Sand Point, WA
GT40: CAV - sold.....
Posts: 2,662
Re: where are the Nrs ?

As Tom says, on the top of the bellhousing at the front you'll see the particular ratio designation stamped into the metal.
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Old 11th September 2017, 08:29 PM   #4
DJ
don Jost
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Join Date: Dec 2016
Location: ms. usa
GT40: lola t 70
Posts: 3
Re: where are the Nrs ?

Thanks for the info.It is appreciated. DJ
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