will standard m20 motor be compatible with auto tranmission

[e30wavee]

hey everyone need some help I bent valves in my m20b25 due to a bad timing belt ive been going crazy looking for a motor with low miles and I just found one in months of hunting for one. only thing is It came out of a 5spd and my car is a automatic would the motor bolt up to my automatic transmission ?

[Farbin Kaiber]

Yes.

[5Toes]

Yes. Just gotta remove pilot bearing

[efficient]

if i have a automatic motor i have to add a bearing right?
i have a manual trans.

[gearheadE30]

Yep. The crank is already drilled for it, so you just have to buy the bearing and press it in.

[efficient]

thank you!

[bostonvert]

Can anyone clarify what this bearing exactly is?

[101]

Can anyone clarify what this bearing exactly is?

Pilot bearing?

It sits in the end of the crankshaft and supports the input shaft of the manual transmission. It is not used with an automatic transmission.

It's part #1 in the attached. (7/86 eta car example shown)

http://www.realoem.com/bmw/enUS/show...diagId=11_1937

[TobyB]

this.

t

[YosemiteSam]

If you get a new clutch kit the pilot bearing comes in the kit. A new clutch is cheap enough that you really shouldn't put a used one in, while you have it all apart just do the clutch job and resurface the flywheel.

[bostonvert]

Pilot bearing?

It sits in the end of the crankshaft and supports the input shaft of the manual transmission. It is not used with an automatic transmission.

It's part #1 in the attached. (7/86 eta car example shown)

http://www.realoem.com/bmw/enUS/show...diagId=11_1937

this.

t

Thanks a lot guys, I never stop learning stuff on these old bmw's!

[bostonvert]

In the process of an engine swap (my car is a automatic) but I bumped in to a small issue :


The donor engine is a manual, the problem is that the torque converter does not fit the manual engine. There is an extra bearing for the manual transmission. Does this mean I have to change out the crankshaft? It doens't look like it is possible to remove the bearing.

This is the automatic engine



And this is the manual engine

[jeffnhiscars]

You remove the bearing and reinstall your auto trans torque plate. If you dont have a bearing puller stuff the hole full of greaseand use a drift close to the size of the hole.