A4 1.8T AMB engine swap /which engines fit

Asked by Jan 17, 2010 at 11:57 AM about the 2004 Audi A4 1.8T Quattro

Question type: Car Customization

I have a 2004 A4 with a 1.8T AMB engine automatic transmission with a blown engine.  I found a 2003 1.8T
AMB engine with 45,000 miles from a manual gearbox car.  Can I use this engine in my automatic car.  I've
read that you can't use the manual gearbox engine in an automatic car because the flywheels are different.  
Couldn't I just swap out the flywheels or is there something else I'm missing?

Thanks,

Rich

2 Answers

55

The flywheels are indeed different, I faced a similar problem in my 99.5 AEB car. The Vw/AUDI shop I work at had a 99 aeb turbo passat wagon with a good motor at 56k miles versus the a4 i bought with a worn out 150k (very rough 150k was an ex;s car haha) aeb. I was informed by one of the techs that not only are the flywheels different but the cranks are different because of the spines on the trannies and bolts of the flywheels. This was later confirmed once the wagon was parted out. I just rebuilt the motor and she runs great...with a GIAC 93 oct, turbo back catless custom exhaust, forge splittR valve, and intake of course :D

1 of 1 people found this helpful.
25

yep automatic and manual cranks are different. I did a 5 speed swap on my 99 A4

2 of 2 people found this helpful.

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