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AB18
04-19-2005, 06:21 PM
Ok, i dont wana hear from people that dont know their stuff. I know the 1.8t and 2.8 clutchs are dif, but im fairly sure they will still mount up, i have a southbend stage3. I just want to know if it will work, from the people who have them.

EVIL-AUDI
04-19-2005, 06:27 PM
If you want to know if your clutch will work with a 2.8 tranny, the answer is yes.

AB18
04-19-2005, 06:28 PM
Thanks alot evil, I was hopin you would chime in.

AB18
04-19-2005, 06:29 PM
btw- obvisouly the 2.8 will do better for drag, will this hurt me in autox with the taller gears?

EVIL-AUDI
04-19-2005, 06:39 PM
I don't think you will see much of a difference at all doing autocross.

AB18
04-19-2005, 06:42 PM
Ok thanks, but are you 100% sure they will work with 1.8t clutchs, im going to order one but want to make sure.

EVIL-AUDI
04-19-2005, 06:44 PM
Yes, I remember reading that it was a direct swap including the clutch. I thought of it myself a while back with my stage 3.

AB18
04-19-2005, 06:47 PM
Well this a southbend ofe serios, so i hope it will work.

EVIL-AUDI
04-19-2005, 06:55 PM
I have a Spec stage 3 and southbend flywheel in my car now.

AB18
04-19-2005, 07:02 PM
Anyone have one just to verify? thanks guys....

b5v6
04-19-2005, 10:41 PM
what all is required to swap the 1.8T tranny for a 2.8 tranny? I don't like my 1.8T being at 3000 rpms when I'm cruising on the freeway, and would definately consider this mod'.

WhippeD
04-20-2005, 12:59 AM
keep us posted i wanna know too...

mike-2ptzero
04-20-2005, 08:07 AM
What clutch you have does not matter if it is mounted to your 1.8t already. The reason is that the clutch has nothing to do with the trans and is mounted directly to the flywheel on the motor. When you pull the 1.8 trans you will need to remove the left trans mount and install it on the 2.8 trans since the one on it will not mount to your sub frame.

All 5 gears in the 2.8 trans are taller then those in the 1.8t so you will notice a difference in every gear for racing. Just in 3rd gear I noticed a 12 mph difference.

Audi A4 1.8T
04-20-2005, 08:17 AM
theres a new thread on audi wolrd on this

TomRitt18944
04-20-2005, 08:17 AM
Not to get off subject, but I'm assuming the 2.8 clutch kit will fit on the 1.8t trans?

At southbend's website the dxd for the 1.8t holds 335ft/lbs and costs $450, while the dxd for the 2.8 holds 430 ft/lbs and costs $395.

mike-2ptzero
04-20-2005, 08:21 AM
Originally posted by TomRitt18944
Not to get off subject, but I'm assuming the 2.8 clutch kit will fit on the 1.8t trans?

At southbend's website the dxd for the 1.8t holds 335ft/lbs and costs $450, while the dxd for the 2.8 holds 430 ft/lbs and costs $395.

Well the 1.8t and 2.8 trans housing is exactly the same. Problem is that the 1.8t flywheel is 224mm while the 2.8 flywheel is 240mm. The big problem is that the mounting points for the starter is different since the size of the flywheel is different. This is also the reason the clutch for the 2.8 can hold more power since the disk surface area is a little further away from the center.

TomRitt18944
04-20-2005, 08:30 AM
Originally posted by mike-2ptzero
Well the 1.8t and 2.8 trans housing is exactly the same. Problem is that the 1.8t flywheel is 224mm while the 2.8 flywheel is 240mm. The big problem is that the mounting points for the starter is different since the size of the flywheel is different. This is also the reason the clutch for the 2.8 can hold more power since the disk surface area is a little further away from the center.

Ok do I have this right? You can use the 1.8 clutch on a 2.8trans if you use a 2.8 f/w?

And the 2.8 clutch wont work on the 1.8 because the 1.8 f/w would have to be used, and thats too small for the 2.8 clutch?

A4Rob
04-20-2005, 09:54 AM
Right now I am in the process of swaping the 1.8T tranny out for the 2.8. I blew mine last week. I will keep you all posted as to how the swap goes. Maybe post some pics later. And yes, I am using my sachs stage 3 clutch that I had in my 1.8T tranny

AB18
04-20-2005, 11:29 AM
So the 1.8t flywheel wont work?

mike-2ptzero
04-20-2005, 02:13 PM
Originally posted by TomRitt18944
Ok do I have this right? You can use the 1.8 clutch on a 2.8trans if you use a 2.8 f/w?

And the 2.8 clutch wont work on the 1.8 because the 1.8 f/w would have to be used, and thats too small for the 2.8 clutch?


If you have a 1.8t engine stick with a clutch/flywheel made for a 1.8t. So you want to use a 1.8t clutch/flywheel for any type of trans swap including the RS2, 2.8 and S4(2.7).

A4Rob
05-17-2005, 11:42 PM
My 2.8 tranny is in!!!!!! Man it is great. I can downshift to 2nd going like 55 on the freeway. Every part of the swap went great and I am very happy to have my car back up and running.

Oh yea and I also got a CF hood. :-P

b5v6
05-19-2005, 11:03 AM
mike-2ptzero:
Aside from the lower RPM's, what is the benefits in each transmission:
RS2
2.8
S4
In other words, why would one choose a RS2 tranny over a 2.8? Is there information listed of which years will fit?

b5v6
05-19-2005, 11:04 AM
Originally posted by A4Rob
My 2.8 tranny is in!!!!!! Man it is great. I can downshift to 2nd going like 55 on the freeway. Every part of the swap went great and I am very happy to have my car back up and running.

Oh yea and I also got a CF hood. :-P

Where did you get your tranny, and what was the price? Did you do the labor yourself? Any additional information you can give would be greatly appreciated.

A4Rob
05-19-2005, 11:14 AM
Originally posted by b5v6
Where did you get your tranny, and what was the price? Did you do the labor yourself? Any additional information you can give would be greatly appreciated.

I got the tranny off carparts.com $800 with 82,000 miles on it.

No i had a old audi mechanic do it for me. he charged 3 hours of labor as opposed to 8 hours like the dealership would've.

Just search a little here. There are about 10 threads on this. Like what needs to be done and such

b5v6
05-19-2005, 11:45 AM
appreciate the info

mike-2ptzero
05-19-2005, 03:25 PM
Originally posted by b5v6
mike-2ptzero:
Aside from the lower RPM's, what is the benefits in each transmission:
RS2
2.8
S4
In other words, why would one choose a RS2 tranny over a 2.8? Is there information listed of which years will fit?


Out of those 3 I think the 2.8 is the only bolt in. I know for a fact that much more work needs to be done when installing a S4 trans, like a custom driverside mount and you have to change out the rear diff to the 4.11 vs the 3.89. The first 3 gears in the 2.8 are equal to that of the S4, after that the S4 has closer ratio gearing but about equal in top speed with the 6speed as the 2.8 does with the 5speed. So if you look at it, it was just much cheaper to do a 2.8 for the first 3 gears I wanted. I really didn't need to get an extra gear(6th) just to end up with the same rpm at fwy speed as the 2.8 gets me.

AB18
05-19-2005, 06:52 PM
Yeah, I have my 2.8 just layin here, i need to install it yet.

bitterchild
05-19-2005, 08:23 PM
haha, laying is right :p

AB18
05-22-2005, 04:46 PM
Hey rob, any problems on intall? any advice?

A4Rob
05-22-2005, 09:51 PM
Originally posted by AB18
Hey rob, any problems on intall? any advice?

Nope. No problems at all. It slid right in place and took only about 2 hours. Just take the left (driver) side tranny mount off your 1.8T and put it on the 2.8 housing. Just like mike told us. Oh yea and fill it up with new transmission fluid :-)

AB18
05-24-2005, 09:22 PM
Cool thanks rob, im in the process of it right now. Are the gears alot nicer? do they feel like they would make a nice autox ratio? I think a slightly taller 2nd would make a nice improvment on a autox track.

A4Rob
05-25-2005, 12:31 PM
Originally posted by AB18
Cool thanks rob, im in the process of it right now. Are the gears alot nicer? do they feel like they would make a nice autox ratio? I think a slightly taller 2nd would make a nice improvment on a autox track.

Oh yea. It will definitly be nicer for autox. I have never done that because I go to full size racetracks with the local PCA club. July 11th and 12th I will be at Road America in Wisconsin. I can't wait to see how the new gears are.

Kind of a funny story, but I was driving home from a friends house last night at about 1am, and I was just cruising about 65-70 MPH in 4th gear without even noticing the RPMs. It just sounded normal. When i downshifted to exit I thought to myself "damn I just wasted some gas!"

My point is, the gas milage is great on the freeway now[cool]

AB18
05-25-2005, 12:40 PM
Haha nice rob, i cant wait to finish this up. Should be done tomorrow or fri.

AB18
05-26-2005, 03:09 PM
Got my 2.8 trans in today, i LOVE it, you can defintely tell a huge difference. You are in the power band so much longer it seems like. You have to launch a lil higher, but ur in ur powernband longer, and its def faster.

A4Rob
05-26-2005, 05:15 PM
Good to hear yours is in now too :-)

mike-2ptzero
05-26-2005, 06:46 PM
Originally posted by A4Rob
Good to hear yours is in now too :-)

Do we need to start a 2.8 trans forum or club now? [;)]

DDQ
05-26-2005, 07:14 PM
Originally posted by AB18
Got my 2.8 trans in today, i LOVE it, you can defintely tell a huge difference. You are in the power band so much longer it seems like. You have to launch a lil higher, but ur in ur powernband longer, and its def faster.

Must be nice! I'm running about about 4k RPMs when I'm at about 80mph crusing on the freeway. I'll never understand the gearing in the 1.8T.

AB18
05-26-2005, 07:26 PM
Haha, mike, i think You, myself, and rob are really the only people on here regually that have them.

bitterchild
05-26-2005, 07:30 PM
i think im the head poser then

AB18
05-26-2005, 07:32 PM
bitter, when will u be dropin one in? The only downside to them is u have to lauch higher in the rpms.

bitterchild
05-26-2005, 08:50 PM
well depending on how the synchros react to a fluid change as soon as next month. I kind of like the close ratios until 4th, I really just want an overdrive 6th.

mike-2ptzero
05-26-2005, 10:49 PM
Originally posted by AB18
bitter, when will u be dropin one in? The only downside to them is u have to lauch higher in the rpms.

I still launch my 2.8 trans the same as I did with my 1.8 trans, but then how many A4 1.8t's launch at 7k rpms at WOT. With the 2.8 trans I was able to get my 60 ft time down to 1.804 while just running 12psi of boost.

bitterchild
05-26-2005, 11:18 PM
I still don't understand how a taller (numericall shorter) 1st is going to net you a faster 60' unless wheelspin is an issue in both cases and the difference is the shift. What are the specs on your clutch mike?

AB18
05-27-2005, 05:03 AM
Bitter, u will like the slightly taller gears, it helps more then u think.

Mike, how were u able to drop ur times?

mike-2ptzero
05-27-2005, 07:35 AM
Originally posted by bitterchild
I still don't understand how a taller (numericall shorter) 1st is going to net you a faster 60' unless wheelspin is an issue in both cases and the difference is the shift. What are the specs on your clutch mike?


Yes I had some wheel spin with the 1.8 trans and 1st gear was just too short when launching at 7k and having to shift into 2nd by 7600 rpms. The 2.8 trans allows me to go a little further down the track before I have to shift to 2nd and a little more time before hitting my 7800 rpms rev limiter which I dont want to do.


The clutch in my car at this time is
custom 4800 lbs dual diaphram pressure plate
unsprung 6 puck disk
15 lbs alum flywheel

AB18
05-27-2005, 07:56 AM
Mike, I took my 3rd up to almost 100mph, so i think i will be able to finish the 1/4 in 3rd, which wil dramaticly lower my times.

AB18
05-27-2005, 10:01 AM
Mike, do u think this will make for a better autox setup?

bitterchild
05-27-2005, 10:11 AM
7800rpm on stock valvtrain?

mike-2ptzero
05-27-2005, 10:43 AM
Originally posted by bitterchild
7800rpm on stock valvtrain?


stock valve train is good for about 8500 rpms, after that you need to go with a solid lifter setup. The reason not many people go to 8500 is because their turbo setups wont be making any power up there and they will need to port out the head to flow more air which is what was already done on my AEB head I have on the car. I plan on moving my limiter to around 8200/8300 soon.

b5v6
05-28-2005, 01:17 AM
How do you know the stock setup is good for 8500? How high is the stock V6 setup good for? Where can I find information about the V6 head (mostly valves)? What is the problem with the lifter setup?

mike-2ptzero
05-28-2005, 10:35 AM
Originally posted by b5v6
How do you know the stock setup is good for 8500? How high is the stock V6 setup good for? Where can I find information about the V6 head (mostly valves)? What is the problem with the lifter setup?

The problem is that it will start to float and that can cause the valves to hit the piston since it is a ZERO clearance setup.

I am not sure what the max rev would be on the V6.

bitterchild
05-28-2005, 11:48 AM
does that mean you'll give me a new head if I drop a valve at 8200rpm? :p Giving more thought to a 2871r now.

mike-2ptzero
05-28-2005, 02:47 PM
Originally posted by bitterchild
does that mean you'll give me a new head if I drop a valve at 8200rpm? :p Giving more thought to a 2871r now.


Actually I think smokingA4turbo has said in the past that he has been to 8200+ with his setup too, but you would have to ask him about that or search here.

AB18
05-30-2005, 04:53 PM
I love this tranny, its def faster then the 1.8t.