M104-AMG

iTrader: (8)

From researching the archives, looks like the only difference in the m/t vs. a/t is the rear plate, pilot bearing/seal, and flywheel.

The rear plate has an extra bolt hole, but will bolt right up to the m/t.

A pilot bearing and seal need to be installed. Simply driven into place.

An aftermarket flywheel is necessary that will balance/work with the the rear counterweight.

Recommendations for a flywheel and a source ?

Am I missing anything else in trying to converting an automatic engine to work with a stick shift chassis ?

TIA,
:-) neil

turbojeff

iTrader: (30)

If you use a stock 5spd flywheel you don't need the counterweight.

If you want a lightweight flwheel use the stock auto counterweight and the lightweight flywheel of your choice.

M104-AMG

iTrader: (8)

When I remove the automatic-flywheel (52mm nut!), do I need to worry about the seal behind it ? That is, do I need to replace it ?

The automatic-engine has been sitting in storage for 2-years.

TIA,
:-) neil

saxyman990

If it's been sitting, then yes I'd replace it. The rear-main seal is easy to replace (once the flywheel or flexplate is off), and is fairly cheap.

turbojeff

iTrader: (30)

Yeah you might as well replace it while your in there, it is cheap insurance against a future leak.

dubulup

easy to replace!!! ****, if your tearing the motor down...I replaced mine with the motor in the car...that ******* sucked! If you are going to pull the rear gear off, do NOT turn the motor.

if you are rebuilding the engine, have the rotors and counter weights balanced together.

missing from the A/T to M/T swap....the wiring! search for wiring diagrams, I've seen a couple good ones on here.

M104-AMG

iTrader: (8)

I'm not doing a A/T to M/T swap. I'm installing a new motor from an automatic INTO a 5-speed stick chassis.

Hence, it has all the wiring and the M/T already in place.

:-) neil

saxyman990

The rear main does NOT require the removal of the stationary gear. It IS in-fact quite easy to change. Once the flywheel/flexplate is off, then the oil seal can be pulled out with the use of the SST or a couple of big flathead screwdrivers.

The rotating assembly does not need to be balanced, unless you are changing the stock configuration (ie, using lighter-weight rotors).

-Rob