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06-03-2004, 03:39 PM | #1 |
Scooby Newbie
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Join Date: Oct 2003
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03 USDM EJ20 -> 97 JDM EJ20 swap
my motor in my 03 took a crap and it isnt under warantee. I can get a 97 EJ20 longblock for a good price, but i was wondering whats involved, is it a bolt in/use stock harness affair, or due to the age difference is there different wiring that needs to be done? also, will this work inconjunction with the 03 ECU?
thanks
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06-04-2004, 01:12 PM | #2 |
Scooby Newbie
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Join Date: Oct 2003
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anyone?
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06-04-2004, 02:39 PM | #3 |
Scooby Specialist
Member#: 3362
Join Date: Dec 2000
Location: Central NJ
Vehicle:2001 I've wired a Few cars in my day |
Two completely different engines. Don't bother. If you were getting a V7 or V8 I would say yes but dropping in a 7 year old engine is not the best idea.
Z |
06-04-2004, 02:46 PM | #4 |
Scooby Guru
Member#: 177
Join Date: Aug 1999
Chapter/Region:
NWIC
Location: Austin, Texas, USA
Vehicle:The 93 W/EJ20K-sold Subaru-less :( |
depends on what went bad on you engine .. you *might* be able to swap the short block but as zepher said the engines are totaly differnt
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06-04-2004, 06:47 PM | #5 |
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Actually,
the '97 to '99 EJ20K engines are the best bang for the buck you can find. They were rated at 276hp in Japan and use the same block and head cores as the STi engines of that generation. The block it semi-closed deck and the heads are the big port variety that flow way better than USDM heads. One of the reasons for the change to using EJ205's(what was previously the EJ20 export market engine) in Japan for regular WRX's and EJ207's for Sti's was because guys with plain jane WRX's could easily get STi level power with a bigger turbo and a handful of bolt ons. That '97 engine is a superior engine to the one you blew up, and would be a worthy replacement for it. Putting it in would be identical to replacing the EJ205 that you blew up. Just switch your wiring harness and sensors over to the EJ20K and bolt it in. Just make sure it is in fact an EJ20K and not an engine from Australia or some other export market... |
06-04-2004, 08:56 PM | #6 |
Scooby Guru
Member#: 177
Join Date: Aug 1999
Chapter/Region:
NWIC
Location: Austin, Texas, USA
Vehicle:The 93 W/EJ20K-sold Subaru-less :( |
I
guess you would need to swap over the 205 intake manafold .. to the 20k long block the K manafold is differnt your intercooler won't fit the cam and crank sensors are the same ... you will still have proublems with the fuel map and the coil on plug won't bolt on |
06-04-2004, 10:44 PM | #7 |
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region:
RMIC
Location: Teh Ghetto Garage, CO
Vehicle:99 2.5RS, '85 911 '73 914 and 2012 BRZ |
The EJ20K's dont' have coil on plug. In '97 when they redesigned the intake to run under the manifold, they also switched to the coil pack with wasted spark. And if he is getting a long block, he should be getting both the manifold and the TMIC from the K...
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06-08-2004, 04:04 AM | #8 | |
Scooby Newbie
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Join Date: Oct 2003
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awesome, but if its still got the VF22 turbo, wheres the extra HP coming from? the heads cant help THAT much.
Quote:
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06-08-2004, 10:48 AM | #9 | |
Scooby Guru
Member#: 177
Join Date: Aug 1999
Chapter/Region:
NWIC
Location: Austin, Texas, USA
Vehicle:The 93 W/EJ20K-sold Subaru-less :( |
Quote:
the simplest path is to make it run is with 205 wireing+205 sensors .. and probbaly 205 heads.. marks: .. from the vf-22 .. which is the largest turbo subaru has ever put on a car |
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06-08-2004, 09:44 PM | #10 |
Scooby Newbie
Member#: 46029
Join Date: Oct 2003
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so what, it has a larger compressor wheel in it with a ported housing? i still dont see where the extra HP is coming from
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06-09-2004, 08:13 AM | #11 |
Scooby Specialist
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NESIC
Location: Salem, NH USA
Vehicle:1995 Impreza w/EJ257 Brilliant Red |
Heads and coil on plug
The older engine might have heads that will recieve the coil on plug setup. I know my MY97 DOHC 2.5 heads have the bolt holes to recieve them for some random reason. Just thought I would throw this out there. Also a custom ECU reflash would probably be in order to address some of the issue you would run into with a differant engine than the ECU. IE no tumble vavles.
Joshua |
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