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Gearbox Conversion: Change Gear Ratio

 
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donalexo
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Post12-02-2004, 13:21    Subject: Gearbox Conversion: Change Gear Ratio Quote

Hello everyone!

Since I've now mentally ruled out installing a 6-speed transmission due to the immense amount of work involved (dual-mass flywheel, clutch, starter, drive shafts, etc.), I would like to draw on your experiences in the field of transmission conversions.

"More and more often, one hears and reads about transmission modifications where the 5th gear is extended, meaning a new set of gears is installed."
That would be one approach, but I think it would be more sensible to moderately extend the axle ratio to avoid making the jump between 4th and 5th gear too large.

Who has experiences they can share?
What is the cost and effort involved in making such modifications (parts costs, labor, etc.)?
Is it possible to perform these repairs without a complete overhaul of the gearbox?

Thank you for the responses.

Regards,
Alex.
AUDI A3 1.9 TDI, EZ 12/96, ursprüglich MKB AGR, umgebaut zum AHF mit GT1749V-Lader, verkauft mit 250tkm

Golf 4 1.9 TDI, EZ 1/98, MKB ALH, jetzt auch mit GT1749V-Lader, verkauft mit 300tkm

Touran 1.9 TDI, EZ 09/2004

Audi A4 Avant 2.0 TDI, EZ 03/2010


Translated on 12-10-2026, 3:46.
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Tagessuppe
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Post12-02-2004, 13:57    Subject: Gearbox Conversion: Change Gear Ratio Quote

Hello Alexander!

Is there any news about the turbocharger boost pressure?

Regarding your question, user Kenny has already performed a similar modification to my knowledge base.
I was asked how difficult the renovation would be, and I received the following answer:
Removed the gearbox, put in a new gear, closed the gearbox. I don't remember if Kenny posted this.
but one of the people who allegedly carried out the renovation.
I was also planning to rebuild the 5th gear. But the mechanic isn't very cooperative.
In that regard, and I don't necessarily want to put two gears on my nightstand if you know what I mean *g*.

Okay... if it works out for you, I'll get you a bottle of red wine.
Almost as a bonus for having to follow only your professional instructions from now on icon_smile.gif.

Best regards and good luck.


Translated on 12-10-2026, 3:48.
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Uli S.
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Post12-02-2004, 14:19    Subject: Gearbox Conversion: Change Gear Ratio Quote

donalexo wrote:
Is it possibly
to perform these tasks without a complete overhaul of the gearbox?
}

Hello,

You can shift into the 5th gear with the gearbox installed; it's located at the very end and is accessible with the cover removed. To access the axle drive, you must completely disassemble the gearbox.

Best regards, Uli.
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Translated on 12-10-2026, 3:50.
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donalexo
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Post12-02-2004, 22:39    Subject: Gearbox Conversion: Change Gear Ratio Quote

Hello Uli!

It sounds like you've already rebuilt one or more transmissions before.
Can you provide some more details about the procedure (work steps), any specialized tools required, the necessary components, part costs, etc.?

Thank you.

Regards,
Alex.
AUDI A3 1.9 TDI, EZ 12/96, ursprüglich MKB AGR, umgebaut zum AHF mit GT1749V-Lader, verkauft mit 250tkm

Golf 4 1.9 TDI, EZ 1/98, MKB ALH, jetzt auch mit GT1749V-Lader, verkauft mit 300tkm

Touran 1.9 TDI, EZ 09/2004

Audi A4 Avant 2.0 TDI, EZ 03/2010


Translated on 12-10-2026, 3:51.
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