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posted on February 5th, 2006 at 05:31 AM
Subaru EJ22 and EJ25 external dimensions
Could someone point me to a reference on the external dimensions of the EJ22 and EJ25 engines? I'm contemplating a swap into my '71 US spec bus and
would like to know if I can avoid cutting the engine bay sheetmetal. The critical dimension seems to be the width, and it looks like I have about 29
in./73cm of room between the seal channels. I expect to have to trim the removable apron, but I don't really want to take a sawzall to the body!
My goal is to build a swappable engine/transmission package that bolts to the stock mounts and can be swapped back to stock easily. The smog laws
here are in a state of constant flux and I don't want to burn my bridges.
Thanks, George
modulus
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posted on February 5th, 2006 at 12:57 PM
Hi George,
Welcome to the forum.
I don't have the dimensions, but this link, covering 'Helbus' installation of an EJ22 in his Bay, will certainly help w.r.t. the EJ22.
That thread has been very helpful, and has been a major inspriation to me to start my own project!
Problem is, my bus is a '71 with the type 1 style tin arrangement. This leaves a smaller hole for the engine unless I want to cut. I would really
like to leave the option open to return to stock, but I might end up cutting out a single piece of tin that could be reattached later on if
desired.
I was leaning toward the EJ25E single cam engine, as these are becoming more available hereabouts, but haven't been able to find any dimensions.
The EJ22 is also a viable choice, but those extra 25 horsepower are oh so seductive.
I've also looked at a Ghia conversion on this site and it seems as though he managed to squeeze the EJ22 into the stock type 1 engine space, at least
in the front where the bus tin is fixed in place. I've heard conflicting data as to whether the EJ25E has the same dimensions as the EJ22 and
figured that this forum would be a good place to get a definitive answer.
Another concern of mine is whether the EJ25 is at its displacement limit for its basic design, making the EJ22 a longer lived choice for bus
service.
Thanks also to Jörg for the EJ22 dimensions. That one seems a definite good fit.
George
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posted on February 8th, 2006 at 05:55 AM
Hi George,
i had no EJ 25 available when i took the above measurements, it is an inch wider on each side think.
If i had the choice now, i would take the EJ 25 SOHC , because of the extra horses and the more torque plus it is a newer design compared to the old
EJ 22. Especially for a bus, you have more weight to move than a beetle. It sure is a lot of fun, a bus with EJ 25!
Jörg
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posted on February 8th, 2006 at 08:42 AM
Quote:
Originally
posted by subaruboxer
Hi George,
i had no EJ 25 available when i took the above measurements, it is an inch wider on each side think.
If i had the choice now, i would take the EJ 25 SOHC , because of the extra horses and the more torque plus it is a newer design compared to the old
EJ 22. Especially for a bus, you have more weight to move than a beetle. It sure is a lot of fun, a bus with EJ 25!
Jörg
I'm leaning toward the EJ25, but that extra inch on each side might be the difference between a slide-in installation and having to cut the engine
bay. I can do it, but I won't like it.
There is also a fair price difference on the used engine market. The EJ22 is $1000US, while the EJ25 is more like $1800.
I do prefer the single cam engine to the twin cam. Smaller package and it seems that the single cam has better low end torque and overall simplicity.
I'm planning on going with aftermarket EMS so I'm not worried about the complexity of the computer.
