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Old 03-31-2016, 05:29 PM   #1
Scooby Newbie
Member#: 297218
Join Date: Oct 2011
Chapter/Region: NWIC
Location: Tacoma, Washington
1999 Outback
Deep Sapphire Pearl

Default EJ22e hybrid turbo build

TL;DR: What performs better EJ25D heads or EJ205 heads? What's better price/performance?

So I've been doing some searching, I'm in the process of planning my motor build but the more research I do the more unsure I am.

Planning on doing a turbo EJ22e build with either EJ205 heads or EJ25D heads.

I've read that EJ25D heads flow pretty well, and are similar to the EJ20k(?) heads, but I can't seem to find if they flow better than EJ205 heads.

Both options seem to have their pros and cons, and would probably end up costing around the same.

EJ25D I heard flow well, relatively cheap to get/find, but I would end up getting a standalone to tune it for peace of mind.

EJ205s I'm not sure how well they flow in comparison, slightly harder to find, more expensive than EJ25D, need intake manifold and wiring harness, and ECU to remap/tune.

I don't plan on pushing any crazy amounts of power, 230-250 wheel is more than enough for me to have fun as a daily, probably no more than 300 wheel ever.

The plan is to get JE 22T pistons, and Manley H-beam rods, and that puts me somewhere around 8.86:1 compression. My plan is to build the motor somewhere around 9.5:1 compression, I would prefer to keep good off boost performance, and good power down low since I hardly ever drive high up in the revs anyways.

Does anyone know any off the shelf manufacturers that can get me into that compression ratio range? I've checked Wiseco, Manley, CP, JE, and a few others, not many people make 97mm pistons for the 2.2s.

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Old 04-02-2016, 11:34 PM   #2
FuJi K
Scooby Guru
Member#: 3687
Join Date: Jan 2001
Chapter/Region: MWSOC
Location: St. Paul, MN
MY99 GF4 JDM 6spd
NF Performance


This is going into a what?
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