I have a 1997 a4 2.8l quattro 5 speed and I am replacing the motor. I have had a head gasket failure and decided to replace the engine with one from a junkyard. The engine I got was from a 1997 a4 2.8l quattro automatic trans. I am attaching the flywheel and noticed that the hole in the crank is smaller on the auto than on the 5 speed. Do I have to pull the crank in order to get this engine installed? If so, are the crank and piston bolts re usable? Any ideas are greatly appreciated.

In 1997 there were 2 2.8 ltr engines. The ACK & the AFC.
What is the engine code of the one you are removing & what is the engine code for the one going in?

Audi for some reason used different cranks on autos and manuals. You would need a manual engine or like you said, swap cranks for it to work. Just the snouts ofthe cranks are different

Thanks for the replies, can the crank and piston bolts be reused? Or are they like head bolts and need replaced.

The man crank needs to be used. The pistons and everything can be reused. If you do a hone and rering the pistons, it will have full compression again.

Have a machine shop chech the stock block, if you are lucky, you can mill it flat and reuse it and possibly the heads or ones off a good motor. Will save a ton of time.

take a nut and weld it to the piece then take a 3 4 inch bolt and screw it in there with a impact will come right off