The Ultimate EJ18/EJ22 -> EJ25 Swap Thread
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NASIOC Slut
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From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally Posted by Kay95
how easy would it be to take the intake maniflod off a 1.8 and put it on a 2.5? also replacing the injectors of course
Something Custom
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From: Las Vegas NV
Car Info: 2018 Grand Cherokee Limited Ecodiesel EOC Stage 1
Originally Posted by Kostamojen
The actual Swap...
There are a couple different routes you can take when swaping a 2.5 into an older Impreza. 1) Rewire the whole car using the 2.5 wiring/ECU/etc. from the doner car, 2) splice the ECU and engine harness from the 2.5 into the current wiring layout, or 3) run the motor with the existing ECU/wiring harness.
If you are doing this on a budget, the easiest thing to do is run the motor off of the existing ECU and Harness. I have a few examples of how to do so in detail.
The first scenario, a 93-96 swaping in a MY98 motor (This is Supermoose's swap)
There are a couple different routes you can take when swaping a 2.5 into an older Impreza. 1) Rewire the whole car using the 2.5 wiring/ECU/etc. from the doner car, 2) splice the ECU and engine harness from the 2.5 into the current wiring layout, or 3) run the motor with the existing ECU/wiring harness.
If you are doing this on a budget, the easiest thing to do is run the motor off of the existing ECU and Harness. I have a few examples of how to do so in detail.
The first scenario, a 93-96 swaping in a MY98 motor (This is Supermoose's swap)
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sti motor swap?
hey i emailed u about an wrx or sti motor swap. i dont think i gave u my email but its jasonxiong@hotmail.com or if u would prefer just post your reply here. sorry by the way
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Joined: Nov 2003
Posts: 28
From: G.R. Michigan
Car Info: '01 Imp Wagon Silver, 17" silver OZ P7's
Phase II 2.5 in `01 Imp L wagon
Last week my 107,000 mile young 2.2 decided to eat a valve, and rip apart the head. Chunks came out in the header, and at least one intake valve isn't in place. I haven't pulled the head yet. Anyway, I'm having trouble finding a used 2.2, and a reman. costs as much or more than a 2.5. Can I just drop in a phase 2 2.5 in a phase 2 2.2 car plug it all together and go? Would I need to cut any wires? I really hurtin' to get this over with, they also tell me it will be two weeks to get the 2.2 to reman. and I'm trying to move half way across the country in about four weeks. They tell me the 2.5 is ready now. Any help would be great.
Thanks in advance.
Thanks in advance.
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From: Okinawa, Japan
Car Info: 1996 STI V3 Type RA
Sorry what I meant is how can I go from a SOHC ej22 to a DOHC ej25 without problems? That is the first and "easiest" setup according to the post above. Dont the DOHC's cause problems with a SOHC ecu that would be for the EJ22? I may also want to put DOHC heads (phase 1) on a SOHC (phase 2) short block to up the comression to 11.5.1.
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NASIOC Slut
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From: Roseville, CA
Car Info: 1995 Subaru Impreza 1.8 L
Originally Posted by keirnna
Sorry what I meant is how can I go from a SOHC ej22 to a DOHC ej25 without problems? That is the first and "easiest" setup according to the post above. Dont the DOHC's cause problems with a SOHC ecu that would be for the EJ22? I may also want to put DOHC heads (phase 1) on a SOHC (phase 2) short block to up the comression to 11.5.1.
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From: Okinawa, Japan
Car Info: 1996 STI V3 Type RA
Stock the SOHC may be better, but with a little bit of work I think the DOHC is better. I want to do the easiest swap possible, so I'll go phase 1 if I can find an engine. Not to many people are selling theirs. What does the extra two cams do in the car? Since the SOHC only has 2 and by putting the DOHC long block in there it has 4.