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Guest Message by DevFuse

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EJ205 Short block rebuild.

EJ205 Rebuild

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#1 badfrogg



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  • Clearwater Florida

Posted 18 April 2017 - 12:28 PM

I am looking for some engine builder advice. I have a EJ205 that came out of a 05 WRX with 144k miles. The engine was still running strongand still making boost but was very dirty on the outside and i did not know the history so I decided to pull the engine and break it down.


Attached File  20170412_215652 (1).jpg   163.41K   7 downloads


The engine came apart pretty easy, no broken or rusty bolts. No visual signs of damage.

At this point I will measure everything as specified in the FSM and figure out what machine work will need to be done.


I want to ask though about bearing clearances. I have not done a turbo engine before. All my experience is just stock N/A power and building back to stock specs.


I would like to take this engine to 300 WHP. I think that is possible with the stock internals but I that is just my theory and not backed by any experience. From my research, the rods are the weak link but if i do not plan to exceed 300 WHP then... 


Also. I know that the secret to building is being precise with clearances. I can just follow the manual but if i plan on pushing more than stock power, do i need to increase the main and rod bearing clearances a bit (i.e the +.001 bearings)


I also know that the secret to keeping engine (that is correctly built) in one piece is to tune it correctly as well. I have the RomRaider software and ECUFlash equipment and have verified that i can read and write to my ECU. Of course that is way down the line right now.


Anyways, I'd love to have someone with knowlage help me through this build!

Edited by badfrogg, 18 April 2017 - 12:29 PM.

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