PDA

View Full Version : 99 A4 1.8 5 spd. trans swap



bengal
07-28-2009, 10:08 AM
I have a 99 A4 with a 5 spd trans. At 80 mph my eng. revs like 36 to 3800 RPM 's. With the low end torque this engine has these RPM's are ridiculous.
I have another 5spd. trans out of a 96 A4 2.8. Is this trans. geared the same as the 1.8 trans? I need lower revs at cruising speed and am wondering if the 2.8 trans. is geared any better, and if it will fit??
THANKS

dirtybrd
07-29-2009, 11:40 AM
The 2.8 trans will bolt right in and has a much better cruising ratio, but you loose some low end accel.

bengal
07-29-2009, 04:26 PM
My car is chipped and has an intercooler so I have good power.
Getting about 25 MPG, maybe I'll get closer to 30 with the 2.8 trans.
Hate the thought of loosing TO much power tho. The high revs are just ridiculous on the highway. How much do you suppose my revs will drop at cruising speed?
THANKS much for the response! bengal

bengal
07-29-2009, 05:34 PM
The 2.8 trans will bolt right in and has a much better cruising ratio, but you loose some low end accel.

any guess as to how many revs I will drop at cruising speed?
I imagine all the gears are shorter, not just 5th?

bob12312357
08-03-2009, 06:06 PM
any guess as to how many revs I will drop at cruising speed?
I imagine all the gears are shorter, not just 5th?
3200 or so rpm at 80. It's not a real big diffrence. I get 33-34mpg at 65 and 29-31 at 80-85. Something else maybe wrong with your car thats making it run rich. That or your a lead foot.[drive][drive][:D]

Kunundrum
09-13-2009, 09:12 AM
Hi guys,

Is the 2.8 clutch the same as the 1.8t ? (interchangeable)

Sales@RAI
10-13-2009, 11:02 PM
Hi guys,

Is the 2.8 clutch the same as the 1.8t ? (interchangeable)

the clutch is matched to the engine not the trans and the trans cases are identical so yes. The clutches themselves are different, but you can swap either trans into your car and not touch the clutch and still be fine

ctavant
12-03-2009, 03:44 PM
does this swap work on all b5's i have an 01 facelift avant just want to make sure any electronics are the same

fcjasontt
02-03-2010, 07:12 PM
you will need the 2.8 mounts I believe.

Just got done with an 1.8T auto to 2.8v6 manual swap.

Grab a trans and PM me ;)