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Old 01-24-2019, 04:21 PM   #1
Scooby Newbie
Member#: 496887
Join Date: Jan 2019
Default Help needed from engine sleuths: what is my short block?

This is my first post on this discussion. I own a buggy that I bought in Southern California, and the previous owner could not tell me anything about the hybrid Subaru engine on it. This being my very first vehicle with a Subaru engine, I know next to zilch about these motors. I need help from “engine sleuths”, to try and confirm what car the short block engine came from, and what timing belt kit I need order. The car is titled as a 1976 VW Beetle, so there is no VIN that can help. I live on a small island in the South Pacific, and the local mechanics and Subaru dealer are not very useful.

The engine was built ca. 2005. It is a turbocharged DOHC. Based on the shape of the cylinder head gaskets, I am pretty sure that the engine is a closed deck. The timing belt has 281 teeth and is 30 mm wide (1.18").

I was told that "the motor was built using an engine from a 1991 JDM Legacy 2.0 RS and a 2.5 l. short block". On the engine case, I can read "EJ25".
I can also read:
and: AB~[]4
There is a serial number on the engine case: 314048311705.

I have replaced the cylinder-head gaskets before, with Subaru part # 11044AA610, that I was told is for a ‘93-‘98 BD/BG Legacy with an EJ25D engine; is it correct? For an EJ25D engine, should it read "EJ25" or "EJ25D" on the engine case? I have also replaced the spark plugs, coils and valve cover gaskets before, and those parts were for a 1991 BC/BF Legacy with an EJ20G engine.
As finding the right parts was a long and difficult process, I would like to confirm what car the short block engine came from, so it is easier (and safer) to order parts in future.

Based on the above, can anyone advise for what car I should order the timing belt kit (including water pump)? Or am I safe so long as I order a timing belt kit for an EJ25D engine?
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Last edited by HybridEngine; 01-24-2019 at 07:56 PM.
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Old 02-06-2019, 08:39 PM   #2
sense of nature
Scooby Guru
Member#: 112759
Join Date: Apr 2006
Chapter/Region: MWSOC
Location: In the V hole!
2004 Stock OEM AsFu*


If the case reads EJ25 it is NOT closed deck unless it has been inserted w/ the inserts from Outfront or IAG, as Subaru does & has not ever made a closed deck 2.5.
I will only read EJ25, no D on the cases.
If the engine is naturally aspirated & DOHC then order a timing belt kit for that ,although there are 2 different Tensioner styles & you will need to pull the timing cover to verify.
Good Luck
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