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Old 01-02-2021, 01:16 AM   #1
Silverevlis
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Member#: 519059
Join Date: Oct 2020
Default Stock EJ257/EJ255 Internal Specs

Has anyone found any Subaru literature that lists the stock specs for:

EJ257 Piston Dish Ccs

EJ255 (Most recent version, not renamed EJ257) Piston Dish Ccs

W Casting Heads Ccs

D Casting Heads Ccs

Oem Head Gasket Bore

Oem Head Gasket Crushed Thickness

Piston to Deck Clearance

Oem Rod Length



Subaru does not list these specs in the FSM, and while countless people (Myself included) have CC'd the heads and pistons, I have never seen a definitive spec sheet from Subaru. If anyone has access to this I would be super appreciative if you could share.
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Old 01-02-2021, 01:41 AM   #2
Jp925
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Default

https://www.flatironstuning.com/blog/what-is-the-difference-between-an-ej255-and-an-ej257

This isnít everything, but it covers a lot of it.
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Old 01-02-2021, 02:24 AM   #3
Silverevlis
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Default

Quote:
Originally Posted by Jp925 View Post
https://www.flatironstuning.com/blog/what-is-the-difference-between-an-ej255-and-an-ej257



This isnít everything, but it covers a lot of it.


Thanks, Ive read that article and am a huge fan of the Flatirons crew but their measurements are also performed in house and not based on Subaru literature
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Old 01-02-2021, 04:09 AM   #4
spoolinsti05
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Chapter/Region: Tri-State
Location: NY
Vehicle:
2005 TickingTimeBomb
Jr tuned TT Sleeved

Default

I believe all 2.5l gaskets are 100mm
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Old 01-02-2021, 11:55 AM   #5
Silverevlis
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Default

Quote:
Originally Posted by spoolinsti05 View Post
I believe all 2.5l gaskets are 100mm


Where have you found this information?
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