Stock engine sheet for EJ25 2.5L Subaru engine

I found this dyno sheet for a stock pre 98 EJ25 2.5L Subaru engine.

It is rated a little lower then the SOHC produced from 99 on, but it is kind of cool. Mine is a 2001 so it tops out at 165hp and 165 torque, but mine also has a better intake and a more free flowing exhaust. Next year at Carlisle will put her on the dyno just to see where it is really at?

Where did you find this and do you think they have something similar for the 2.2L?

How about a layman's explanation of torque. I only have the vaguest notion of what it means. And why is it measured in ft/lbs? That will probably help me to understand.

A foot/pound is the amount of energy that it takes to raise a one pound mass one linear foot. Torque is the moment of forces that causes rotation or twisting. So, my simple brain tells me that given these two facts, an engine's torque is the rotational energy an engine produces at a given RPM measured in foot/pounds. Still a mystery? Yea, me too pretty much. I usually just call it grunt and let it go at that.

Its not really easy to explain, but John has it really close. Think of it this way, if you have a 1000 hp engine that doesn't produce very much torque it doesn't really feel like it has any power.

This is where the big difference in modern engines vs older engines really lies. Modern engines have torque as lower RPM's and the torque tends to follow with the horsepower. You will here it said a lot that horsepower is great, but how much torque you are able to produce really tells you how much of that power is available and when in the RPM range.

More torque early in the RPM and HP band = more launching power and more fun!!

picture a big guy and a small guy both doing the same task differently. they have to move 100 bricks from one truck to
another. lttle guy moves 1 brick at a time (torque value) but
eventually gets the job done. big guy moves 10 bricks at a time
(more torque). you tend to "feel" torque like driving a big block
car

Here is the stock EJ25 numbers on year 99 and after
STOCK SPECS Stock HP: 165 at 5600 RPM (flywheel)
Stock Torque: 166 at 4000 RPM (flywheel)
Type: Horizontally Opposed 4-cylinder
Displacement: 2457cc (149.9 ci)
Bore: 3.917" (99.5mm)
Stroke: 3.110" (79.0mm)
Compression Ratio: 9.7:1 to 10.0:1
Cylinder Head: Aluminum 4-valve SOHC

A few specs from our SOHC cylinder heads:
Intake Valve Diameter 1.420"
Exhaust Valve Diameter 1.240"
Intake Valve Lift 0.375"
Exhaust Valve Lift 0.310"
Valve Material Stainless Steel
Intake Duration (seat-to-seat) 232

From the link below:
"Engines don

For years and years Detroits goal was to create an engine where the toque curve matched the hp curve. It wasn't until electronic ignition and computer controlled cars that they were able to achieve it on a regular basis. You can use the calculation method to approximate things, but it doesn't give you any real numbers.

Its like saying, "if I know the hp and weight of a car I can calculate the 1/4 mile time. I see these math formulas all the time, but they are for approximates not actual numbers.

If you look at a lot of actual hp and torque curves for older style engines you will notice that the torque and hp doesn't come on as early in the RPM band.