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06-09-2021, 11:14 PM | #1 |
Scooby Newbie
Member#: 524766
Join Date: Jun 2021
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Best ej25 block that is compatible with ej22e heads?
Building a Franken and was wondering which is going to be the most durable bottom end for a moderately boosted build. Not looking for insane power just enough to enjoy the car and have a fun daily. My other question is if going with my current non-interference heads will my setup still be non-interference?
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06-22-2021, 05:33 PM | #2 |
Scooby Newbie
Member#: 478524
Join Date: Nov 2017
Chapter/Region:
NESIC
Location: Southern NH
Vehicle:1995 EZ30 Coupe Green |
You're going the wrong way for boost. 22 heads on a 25 block gets you high compression with poor flowing heads. Decent low end for off-roading and such but bad for boost.
I can personally attest that a 22e bottom end with 25d heads will LOVE some boost if you can tune for it. I ran 18psi from a td04 for a while in my coupe, it was a blast. That said, if you're dead set, sti (257) is the best you'll get from Subaru, after that you're gonna spend serious coin on an aftermarket block with forged internals, closed deck, etc. |
06-22-2021, 05:51 PM | #3 |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
2.5 Type RA is best shortblock from Subaru you can buy new today.
You can obviously build a forged motor, but at that point you might as well use good flowing heads.... Research is your best friend. Last edited by K3rm1tth3fr0g; 06-24-2021 at 08:57 PM. |
06-23-2021, 04:59 PM | #4 |
Scooby Specialist
Member#: 13530
Join Date: Dec 2001
Chapter/Region:
NWIC
Location: Cascadia
Vehicle:EA63 , EA81T, EJ20G, EJ205 |
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06-24-2021, 08:01 PM | #5 |
Scooby Newbie
Member#: 478524
Join Date: Nov 2017
Chapter/Region:
NESIC
Location: Southern NH
Vehicle:1995 EZ30 Coupe Green |
I'm partial to the ej22t block myself. Closed deck, oil squirters, and an extra 200cc. Slap some real heads on and enjoy.
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