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Old 07-23-2001, 08:06 PM   #1
oldpreza
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Default will they bolt up?

i was just wondering when I was driving...

If EJ25 heads can fit a EJ22 shortblock, can EJ18 heads fit EJ25 shortblock? what about the intake manifold?

Cheers,
Kimi
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Old 07-23-2001, 10:22 PM   #2
Midwayman
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I think the question is why?
a ej22 will probably make more power than ej18 heads on a ej25 even if they do fit.
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Old 07-24-2001, 12:19 AM   #3
oldpreza
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i was thinking of using what I have on my car right now. so just wondering....
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Old 07-24-2001, 09:47 AM   #4
RallyImprezive
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Here is what I know: I spoke with COBB and they said that their EJ25 heads will fit on a EJ22, except you need to buy headers because the EJ22 only has one exhaust port on each side. SOOO, I should think that IF the EJ25 heads fits the EJ22, and the EJ18 heads fit the EJ22, that the EJ25 heads would fit the EJ18. Whew...isn't there a theorum based on what I just said? I think its:
IF A=B and B=C then A=C.

-Andy
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Old 07-24-2001, 01:57 PM   #5
oldpreza
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what about EJ18 heads on EJ25 block?
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Old 07-24-2001, 03:59 PM   #6
Iowannaski
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Default theorom

if A=C, C=A. Of course, that has very little meaning in the present context.
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