Is my Subaru DOHC or SOHC?
ITs easy to tell, look at the plastic cover in the front of the engine, on each side of the motor there should be lumps, DOHC has 2 lumps (for the cam sprockets) on each side, sohc has 1. SOHC= single overhead cam, DOHC= dual.
Is the EJ25 SOHC?
EJ25 is the biggest engine among other EJ engines – EJ15, EJ16, EJ18, EJ20, and EJ22. EJ251 motor has SOHC heads, new pistons and higher compression ratio (10.1:1).
Is DOHC better than SOHC?
One of the camshafts operates the exhaust valves while the other operates the intake valves. The extra camshafts in every cylinder row enable the valves to open and close with precision. The DOHC engine produces more power and is more efficient than the SOHC engines.
How do you tell if your car is DOHC or SOHC?
Re: how to tell if you have a SOHC or DOHC? Easiest way to tell is by looking at the valve cover, the DOHC is much wider and has a groove in the middle where the plug wires go.
How much HP can a EJ25 handle?
300 whp: The EJ20/EJ25 engines can handle 300 whp maximum with stock internals with no further modifications other than a proper fuel management tune.
Why does Honda still use SOHC?
The biggest reason to use them is because DOHC engines are more expensive to produce (which price would get pushed back onto the consumer), there are more moving parts in them (which means they will fail sooner), and they can still do VTEC in either version.
Are SOHC engines good?
SOHC is more fuel-efficient since its power consumption is low. The spark plugs are not located at the center of the cylinder. They are not strategically located, thus hindering the performance of the SOHC engine. SOHC has a better low-end torque.
Is SOHC better than DOHC?
To sum it up, a 4 Valve per cylinder SOHC engine with a lighter valvetrain mass would have better performance characteristics at the lower end of the powerband. However, at higher engine speeds, a DOHC setup with its higher valvetrain mass and as many valves per cylinder will develop higher peak torque and horsepower.