N/A EJ22.

[EJ22D]

As some of you already know, I have put together a DOHC EJ22 & it is running quite nicely. In fact, it's running so nicely that I plan to build another in the near future after I eventually turbo the one I have. I'm not looking for omnipresent power with the new engine, just for a better N/A EJ22.
Keeping that in mind, I have come up with this formula:

97-99 25D heads.
EG33 pistons (4) or 222 pistons.
257 piston rods.
222 shortblock.
.050 MLS Phase 2 head gaskets.
Phenolic intake manifold spacers.
UEL headers or EL headers if I really want that extra 10bhp.
2.25 inch exhaust piping from the catalytic converters back.

I know I could grab a 25D & have more displacement & power but how close can I get to the 2.5 in power w/the EJ22 is a question I'd like to answer. Does anyone even think I'd touch 160bhp, especially since the JDM 20D puts out 150bhp & has less displacement?

[Garrison]

Is there any compression difference between 222 and EG33 pistons?

Edit: I thought it was the EZ30 pistons that fit?

[Reason]

Interesting set up

[EJ22D]

Is there any compression difference between 222 and EG33 pistons?

Edit: I thought it was the EZ30 pistons that fit?

I may be incorrect in thinking this but I believe that the 222 pistons are higher compression than the EG33 pistons, considering that they have practically a flat top compared to the EG33 pistons, which are very much like those in the 96 25D.

I think that 257 valve springs along with a good valve job on 97-99 25D heads bolted on a 22E or 222 block, 150-160bhp is definitely possible. One would just have to use thin head gaskets, low resistance wiring/plugs, & get it to rev to 7000+rpms with the proper fuel & spark management.

[1996Battlewagon]

Would you run stock 25D cams?

And isn't the EG33 essentially just a EJ25D with two extra cylinders? Were the pistons actually different?

[EJ22D]

Would you run stock 25D cams?

And isn't the EG33 essentially just a EJ25D with two extra cylinders? Were the pistons actually different?

I would actually run different sets of phase 1 DOHC cams to see which one is the absolute best set for an N/A build. 20D, 25D. & 20K cams can fit in the same kind of 25D cylinder head (97-99).

The EG33 is actually an EJ22E with 2 extra cylinders. It even has the same stroke & bore.
The pistons are much more like those in the first EJ25D (1996).