Is engine the same on auto vs manual transmission?

Tiny
DIVIDES
  • MEMBER
  • 2016 SUBARU WRX
  • 4 CYL
  • TURBO
  • 4WD
  • MANUAL
  • 85,000 MILES
Received a second replacement motor as the first one was bad. This one is clean but came out of an automatic CVT. Are these any differences in harness or other items you can think off? Other than having to swap the auto plate for the w=flywheel and clutch?
I am almost sure they are the same just double checking.
Tuesday, September 21st, 2021 AT 4:36 PM

7 Replies

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
No. These engines are going to be the same regardless of what transmission was attached to them.

Basically it would cost the OEM more money if they had many changes needed based on transmission. So there will be differences if you were trying to change the transmission from manual to auto or the other way.

However, the engine is going to be the same.

I included the process on how to change the flywheel in case you need it.

Clearly just unbolt the flex plate and then install the flywheel.

https://www.2carpros.com/articles/how-a-standard-transmission-works

Let me know if you have other questions.

Thanks
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Tuesday, September 21st, 2021 AT 4:51 PM
Tiny
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Thanks, makes sense. I had the numbers for the flywheel bolts as 55 ft/lb, but I see it here as 22?
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Tuesday, September 21st, 2021 AT 4:57 PM
Tiny
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Correct. However, look at the step below the picture in step 2 on the last page.

Torque to 22 ft lbs but once you get them all to 22 you go in the same torqueing sequence another 35 degree turn.

This means you can use a protractor to figure out the proper angle for 30-35 degrees or get close to it. Clearly half of 90 degrees is 45 so on a clock, you go from 12 to just past 1 or almost 2 o'clock and that will be about 35 degrees.

However, this would more than likely come to about 55 ft lbs but they want you to go in stages so that it doesn't warp the flywheel.
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Tuesday, September 21st, 2021 AT 6:49 PM
Tiny
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I see. Thanks
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Tuesday, September 21st, 2021 AT 6:51 PM
Tiny
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You are welcome. However, I just went back and edited that. 12 to 3 on the clock would be 90 degrees. So you want to go just short of half way between 12 and 3 for about 35 degrees.

Thanks for using 2CarPros. Let us know if you have other questions. Thanks
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Tuesday, September 21st, 2021 AT 6:52 PM
Tiny
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I have a torque wrench so I will go 22 everywhere then go in a cross pattern to 52-54 I guess.
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Tuesday, September 21st, 2021 AT 7:00 PM
Tiny
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  • MECHANIC
  • 18,907 POSTS
Yeah. You will be fine. Thanks. Let us know how it turns out.

Thanks for the updates and continuing to use 2CarPros. We appreciate you.
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Tuesday, September 21st, 2021 AT 7:02 PM

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