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-   -   2.8 vs 1.8 manual trans - same? (https://www.audiworld.com/forums/a4-b5-platform-discussion-1/2-8-vs-1-8-manual-trans-same-2834769/)

vtraudt 10-01-2012 05:04 AM

2.8 vs 1.8 manual trans - same?
 
Can I use the manual trans from a 1998 A4 1.8T quattro on a 2.8 quattro?

Nollywood 10-01-2012 09:51 AM


Originally Posted by vtraudt (Post 24354162)
Can I use the manual trans from a 1998 A4 1.8T quattro on a 2.8 quattro?

Yes, you can. Your car will pick up speed quicker, though will be pretty busy at highway speeds. The 1,8T overall ratio is lower than that of the 2,8, enough to hurt gas mileage.

gladman88 10-05-2012 10:06 AM

really??? im an ass and got to fit a new clutch and gearbox (1st gear) making very loud noise, my engine code is ack, are the codes interchangeable??? sorry im a noob lol

vtraudt 10-05-2012 03:00 PM


Originally Posted by gladman88 (Post 24355877)
really??? im an ass and got to fit a new clutch and gearbox (1st gear) making very loud noise, my engine code is ack, are the codes interchangeable??? sorry im a noob lol

I have 2 good used 5 spd boxes (1998 A4) sitting in the garage.
Too heavy to ship (unless someone hires someone to do it).

$280/each, $500 both, picked up.

vtraudt 10-05-2012 03:02 PM


Originally Posted by gladman88 (Post 24355877)
really??? im an ass and got to fit a new clutch and gearbox (1st gear) making very loud noise, my engine code is ack, are the codes interchangeable??? sorry im a noob lol

I have 2 good used 5 spd boxes (1998 A4 1.8T quattro) sitting in the garage.

Too heavy to ship (unless someone hires someone to do it).
One is from local parts dealer, never installed in my car (have receipt).

The other is out of my running (no defunct after parking it on the roof) own car (shifting very smooth, no noise).

$280/each, $500 both, picked up.

3 bar 10-05-2012 07:50 PM

Im pretty sure your going to need the rear diff as well cause i think the final drive is different and is matched to that trans

gladman88 10-06-2012 01:33 AM

thanks guys, i live in england so i think delivery would be sky high, hard to find 2.8 gearbox here but there are 1.8t everywhere lol

vtraudt 10-06-2012 03:31 AM


Originally Posted by 3 bar (Post 24356043)
Im pretty sure your going to need the rear diff as well cause i think the final drive is different and is matched to that trans

That is VERY likely, and applicable for the Quattro.
Obviously not an issue for FWD (A4 and Passat)

Nollywood 10-06-2012 09:36 AM


Originally Posted by gladman88 (Post 24356087)
thanks guys, i live in england so i think delivery would be sky high, hard to find 2.8 gearbox here but there are 1.8t everywhere lol

If you're in England, you may wish to consider mine. It's still in the car, and still drives, so can be tested.

gladman88 10-07-2012 03:37 AM


Originally Posted by Nollywood (Post 24356176)
If you're in England, you may wish to consider mine. It's still in the car, and still drives, so can be tested.

how much you looking for and shipping to morecambe, lancashire, thanks dude!

3 bar 10-07-2012 05:43 PM

fund out the 1.8Tand the 2both have the same final drive so no need to swap out the rear diff however,the 2.8 has a 0789 5th gear vs a .838 5th for the 1.8t this equates to about a 300rpm drop at 65 for slightly better fuel economy, Also 1st gear for the 1.8T is 3.778 vs 3.5 for the 2.8 which means acceleration in 1st will be slightly slower.

Nollywood 10-08-2012 12:06 AM


Originally Posted by gladman88 (Post 24356359)
how much you looking for and shipping to morecambe, lancashire, thanks dude!

Hi! Looking at £95 for the trans, plus whatever shipping costs. Most pallet deliveries are £65.

gladman88 10-08-2012 08:32 AM


Originally Posted by Nollywood (Post 24356636)
Hi! Looking at £95 for the trans, plus whatever shipping costs. Most pallet deliveries are £65.

so this gearbox will bolt straight in and using the 2.8 clutch, can it take a hammering from the 2.8, about to turbo it lol, thanks.

gladman88 10-08-2012 08:37 AM

so will the 1.8 quattro box fit my 2.8 quattro?? any modifications???
if its straight bolt on using the 2.8 clutch will there be any side affects sorry really dont understand the 300 rpm drop at 65 is that 65mph, will i be able to get any performance out of it.

3 bar 10-25-2012 02:59 PM

The swap is a direct bolt in. Im sorry if your running a 2.8 you will have a 300 rpm increase at cruising speed as well as quicker acceleration. Vice versa if your running a 1.8T. Many people with highly modified 1.8Ts like 2.8 transmissions because it allows them to keep the car in 4th at the end of the 1/4 mile without redlining.

Peter Badore 10-26-2012 07:28 AM


Originally Posted by 3 bar (Post 24356043)
Im pretty sure your going to need the rear diff as well cause i think the final drive is different and is matched to that trans

This is important. Your A4Q will not like having different ratios at each end of the car.

vtraudt 10-26-2012 07:34 AM


Originally Posted by Peter Badore (Post 24364792)
This is important. Your A4Q will not like having different ratios at each end of the car.

Import to check, obviously.
3 bar stated: "fund out the 1.8Tand the 2both have the same final drive so no need to swap out the rear diff"

If that i verified, rear can stay as is.
Is front to rear shaft the same 1.8T vs. 2.8?

gladman88 10-26-2012 11:06 AM

:-)
 
thanks guys just paying credit card off then im buying, car will only drive in first gear and slips in every other gear but the gear box 1st gear is noisy as hell, glad its not a automatic lol


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