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Old 12-09-2018, 04:52 PM   #1
rentalsquid
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Member#: 486915
Join Date: Jun 2018
Vehicle:
02 impreza

Default lost power after 2.5 swap to a 2.0,please help!

a few months back i did a engine swap on my 02 impreza the motor blew after moving states and i only had three months till i was moving again and i was looking at either rebuilding the motor or swapping. i went with swapping and this is my first subaru, the guy i was buying the motor from said that it would be better too just use the 2.0, he said it had less oil leaking issues. so i did the research and the swap was easy enough. got the new motor started and when i backed it out of the shop it took a few seconds to engage and start moving and i thought that i just didnt fill it with enough fluid or that i had a bubble in the line so i let it run for a while to see if it change at all and when i would try to drive it i got little to no power, it would start to rev up and the move but only to about 10 mph and none at all on the smallest incline, is this a tranmission issue or did i mess up the swap to begin will.
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Old 12-09-2018, 07:12 PM   #2
Charlie-III
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Member#: 30669
Join Date: Dec 2002
Chapter/Region: Tri-State
Location: USA, North NJ, 07456
Vehicle:
1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

Default

So the engine starts and runs like your old one did?
Really sounds like a slipping clutch, the engine revs but the slipping clutch won't transmit power.
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Old 12-14-2018, 03:41 PM   #3
CarmelValleyWRX
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Member#: 453872
Join Date: Sep 2016
Vehicle:
2005 wrx wagon
48w

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if you put a 2.0l turbo block into a 2.5i impreza you will loose major power. the engine is designed to have some boost in it.
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Old 12-14-2018, 04:16 PM   #4
Homemade WRX
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Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 in the garage
search FIRST, then PM!!!

Default

Is this an manual or auto car?

Was this a JDM NA 2.0 engine?
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Old 12-17-2018, 07:45 AM   #5
Charlie-III
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Member#: 30669
Join Date: Dec 2002
Chapter/Region: Tri-State
Location: USA, North NJ, 07456
Vehicle:
1998 Legacy 2.5GT
Silver Sleeper BK, 5MT

Default

Quote:
Originally Posted by Homemade WRX View Post
Is this an manual or auto car?

Was this a JDM NA 2.0 engine?
Good point, if it's an AT, could be low on trans fluid. OP did bolt the torque converter to the flexplate, correct?
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Old 01-08-2019, 11:17 AM   #6
CaptainSlowbaru
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Join Date: Apr 2016
Chapter/Region: Tri-State
Location: Rafferty Subaru, PA
Vehicle:
2002 Outback Sport
Green

Default

When the old motor blew did it clog the cat with debris?
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