Differences between auto and manual motors

[Pontiac462]

Just picked up a really nice 02 protege5 with a 5spd manual with a bad motor cheap. Just about every local yard I deal with has several 2.0's but they're all listed as autos. Closest manual motor is 60 miles away. Only differences I can think of would be the crank hub? Not sure if this motor uses a bushing or bearing for the input shaft but if so would the auto motor accept it? And obviously I'm using my flywheel. I used the search option and couldnt find my answer. Hopefully someone here can help.

 

[BRIAN_MP5T]

Zero Diferences.. MTX and ATX

Note: There are almost no diferences between a MSP engine and a 2.0L FS

 

[Jordysoso]

Only difference between a motor with mtx or atx is the transmission only. You can keep the tranny but if tge motor is bad, you need to fix the motor, obviously lol

 

[tweety2300]

flywheel is different also except for the turbo stuff msp engine is the same as well if its a 2.0 protege or just about any 01-03 mazda with a 2.0 its an fsde theyre all exactly the same except some have a different intake mani

 

[BRIAN_MP5T]

Umm, There is no "Flywheel" on an Automatic..... Just a gear attached to the Torque Converter for the starter...

flywheel is different

also except for the turbo stuff msp engine is the same as well if its a 2.0 protege or just about any 01-03 mazda with a 2.0 its an fsde theyre all exactly the same except some have a different intake mani

 

[tweety2300]

You missed the sarcasm in that...

 

[i12drivemyMP5]

Transmission is not the only difference. The auto/sportauto & manual ecu's are different but as far as just the motor itself, nah, same same.

 

[traitorhound]

The bell housing plate is also different but will still work. It the ATX one has an extra hole in it under the starter but can still be used in the MTX.

 

[Pontiac462]

ok sounds like I'll be fine. Also I'm well aware that auto dont technically have a flywheel however the term is generally used in the industry. Ive been rebuilding transmissions for 12 yrs and a mechanic for 18. Do these use a pilot bushing or bearing in the crank for the input shaft? Curious if the crank will be finished there to accept it. I unfortunately have no choice but to grab a motor from an auto considering they are abundant

 

[BRIAN_MP5T]

There is a Pilot on the FW..

The Input shaft has a tapered seat that fits perfectly into that bearing if the alignment tool is used.

May I suggest the use of Blue or Red thread Lock for the Crank to Flywheel bolts.

When I took my engine out last time, one of the bolts had backed off and I remember checing torque twice in a star pattern, that would not have happened if I had used the thread lock.

 

[nareshseep]

starters are different between the auto and manual, ecu will be different , but the auto ecu can work on a manual tranny but not vice versa, rear motor mount bracket is different also, front springs have a stiffer rate on the auto to accomodate the heavier tranny.

 

[duffbuster243]

The engines are the same you will just need to swap the starter plate on the back of the motor and throw the flywheel on and bolt it in. Ive done it about 3 times now...... To save even more money find a 2000-2003 626 auto, and swap over all the accessories. I don't get why people need to chime in with extra non-irrellevant info complicating this thread..

 

[tweety2300]

Actually you can use a manual ecu on an auto, you will just have to manually shift gears

 

[Ward83]

Wouldn't the gauge cluster be slightly different? The manual one wouldn't have the gear indicator.

 

[Stickman]

Had to replace my motor last yr.
If it came from an AT and I have a MT, could the ECU issue be why I've lost 4 mpg?

 

[DarkAngel]

Had to replace my motor last yr.
If it came from an AT and I have a MT, could the ECU issue be why I've lost 4 mpg?

I don't see why you would. The motors are exactly the same, no difference. Once you slap on your stuff meaning the manual trans stuff and what not it is the same exact thing. Mileage and wear on the new motor swap would probably cause your MPG to vary. I would have done a tune up like spark plugs and the normal stuff before driving around. It wouls also make a difference id you changed wheel diameter and what not with a set of new wheels. Just throwing out different factors that can vary your results.

 

[leaderjoe]

2002-03 626 engine vs Protege5

The engines are the same you will just need to swap the starter plate on the back of the motor and throw the flywheel on and bolt it in. Ive done it about 3 times now...... To save even more money find a 2000-2003 626 auto, and swap over all the accessories. I don't get why people need to chime in with extra non-irrellevant info complicating this thread..

What accessories can be swapped over? Engines are same? I have 2002 P5 manual and exploring options. Wife prefers I swap in an auto as well if I find right donor car and easy enough.

 

[TURBOJ1]

If you're asking about ONLY the motor.....There's none. Going from auto to manual or manual to auto, there's gonna be additional parts needed.

 

[P-Funk!]

Consider trading cars* with someone - some people with autos would prefer a manual...

Many things change swapping the tranny to auto. Possible? Yes. Easy? NO.
Think radiator/cooling lines, wiring harness at tranny, trans mounts, and more...


*Because offer to trade wives may not go too well for you!