Swapped heads?

469 Views 5 Replies 2 Participants Last post by silverton, 24 d ago

DaneH64

Discussion Starter · 25 d ago

I was doing maintenance on my ej18 and noticed my heads looked mismatched, and look to be off a different ej, anyone know what heads these are? The right one has a "55" stamped in it, and the left one has a "50" stamped in it, still sohc, and it's a 94 Impreza l if that makes a difference. sorry if it's a dumb question, just new here

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DaneH64

Discussion Starter · #3 · 24 d ago

silverton said:
Nice! Blurry cam! Those numbers are likely insignificant. There should be a letter followed by '18' on the back side, that is if they're anything like EJ25 heads. I got in to the subaru game a little late so I've never touched an 18, and only one 22.

😅 best image I could get lol... nothing on the backside, only a cap, which I assume is just the back of the camshaft
Only ask since they look different from other ej18 heads I've seen, and different color, etc. wondering if they'd be from an ej22 or some of the sorts, since I've seen same numbering on the head corner
Thanks for the reply

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DaneH64

Discussion Starter · #5 · 24 d ago

silverton said:
It's definitely possible, the car is 30 years old, who knows what its been through. With that said, I got a basically free 2002 outback that needed a motor, and the best thing I could cobble together, also for free was a phase 1 EJ25D block, with one L25 and one Q25 phase two heads. It worked! Until my nephew ran it out of oil.. now it has a jdm ej20 in it.

Heh, old subie's are basically Legos, seen a dude throw ej18 heads on ej22s and vice-versa
For now I'll just assume I have a franken-motor

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