Classic Audi Technical Mech/Tech Transmission » 6 Speed Conversion

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Old 18-09-17, 09:57 AM   #1
Davids
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Default 6 Speed Conversion

As it says in the thread, any one actually done one ?

Not like I new more work and another project, but it could be put in the " to be done" section of my lists.

First real big motorway trip for the Coupe the weekend, from Reading to Grays in Essex and back, all via shi??y M25, although on the way back on Sunday is was real easy and free flowing.
Car went like a dream and never missed a beat, but after having a 6 speed BMW I thought the Coupe might have benefited from a 6 speed, especially where the motorways were more or less level and flat and driving was just off throttle to speak.

I have had a search but cant actually find anyone that has said " yep done it, and it is great/cr@p"

Lots of threads with people saying they are going to do it but cant actually find anyone who has actually done it and driven with it.

For info the car is a 1991 2.3 20V 7A, so boys and girls anyone any thoughts and tips ?

Cheers

David
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Old 18-09-17, 02:51 PM   #2
msh
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You have an engine which has been optimized to run at rather high revs. It's even likely that it has rather low gearing, made for 2.3 10v engine. It is possible to fit 01E FWD six speed gearbox, but you will end up still driving in fifth or, if using sixth, you'll find out that the engine will consume more fuel and be less able to cope with load. More or less that is the reason why you can't find anyone who has done that. Audi engineers weren't idiots, cluelessly choosing gear ratios.
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Old 18-09-17, 03:04 PM   #3
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Many thanks but well unless you ask you never know.

As for the Audi engineers not being idiots, I doubt idiots but some of the finished trim and OE fixings designs leave something to be desired at times.

Ciao Bella

Last edited by Davids; 18-09-17 at 03:24 PM.
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Old 18-09-17, 04:06 PM   #4
msh
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This question pops up from time to time, only usually someone asks about swapping in taller ratio five speed box.

As for trims etc - look at vw and BMW 3 series of the period and think again
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Old 18-09-17, 05:29 PM   #5
terrywindy1
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My Audi A2 TDI 90 has been converted to 6 speed .
When to DMF and clutch went at 115k .
I took it to Tony at A2cars in MK
He removed gearbox from car and took it a company near Munich
who convert any VW/Audi box from 5 to 6 speed this includes full reconditioning and choice 5th and 6th ratios. With a casting on end of box
My rpm at 70 mph dropped from 2250 rpm to 1750 rpm in sixth
Mpg on a long motorway run is between 65 to 80 mpg
Cost for my gearbox was just over 1,000
I would say lack of a 6 speed box more likely Audi accountant
than engineers
Also got 6 speed option on my 94 Audi 100 Tdi

Last edited by terrywindy1; 18-09-17 at 05:38 PM.
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Old 18-09-17, 05:35 PM   #6
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Quote:
Originally Posted by msh View Post
This question pops up from time to time, only usually someone asks about swapping in taller ratio five speed box.

As for trims etc - look at vw and BMW 3 series of the period and think again
I have a BMW and several from that eara, unfortunatly as much as it pains me to say they were streets ahead of my Audi

Last edited by Davids; 18-09-17 at 05:42 PM. Reason: Typo
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Old 18-09-17, 05:41 PM   #7
Davids
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Quote:
Originally Posted by terrywindy1 View Post
My Audi A2 TDI 90 has been converted to 6 speed .
When to DMF and clutch went at 115k .
I took it to Tony at A2cars in MK
He removed gearbox from car and took it a company near Munich
who convert any VW/Audi box from 5 to 6 speed this includes full reconditioning and choice 5th and 6th ratios. With a casting on end of box
My rpm at 70 mph dropped from 2250 rpm to 1750 rpm in sixth
Mpg on a long motorway run is between 65 to 80 mpg
Cost for my gearbox was just over 1,000
Thanks for the info, nice read as well, at least it looks possible. I was really looking at something i could do if and when i do the clutch. Thanks very much for the reply, much appreciated.

Ah well back to geting the GT6 done, there us a bloke on here keeping a check on me thats its done right
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Old 18-09-17, 06:13 PM   #8
vorsprung durch technik
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Quote:
Originally Posted by Davids View Post

Ah well back to geting the GT6 done, there is a bloke on here keeping a check on me thats its done right
A bit more like the other way round.
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