Quote Originally Posted by Xusia View Post
NOT trying to stir anything up; just trying to understand... Given the relative ease with with which the EZ series motors will fit, what is the appeal of an EG? A stock EZ36 produces more HP than a stock EG33.
Personally i like the EG33 MUCH better than i do the EZ30. It's easier, cheaper, stronger, better.
Theres a company here local called "metric Motors Extreme" who builds Subaru engines specifically for "off road use" or for Sandrails. they make and sell an EG33 with a midsize turbo. advertized 600BHP on a built bottom end. BUT the real kicker is, they get 400hp advertized on "low mileage blocks" (unbuilt, unrebuilt, stock engines) Check the bottom of this page http://metricmotorsxtreme.com/engines.html#33600

The where the EG33 and the EZ30 differ:

Rod/crank bearing thicknesses. The EG33 is roughly 130% of the EZ30.

Valve Timing drivetrain. The EG33 is a belt that drives the exhast cams, the intake cams are driven from helical gears off the exhaust cam. EZ30 is Full Cam chain (2 of them iirc).

price. An EG33 can be had for around $600 if one takes the time to look. and for $2000 if you want an entire car with it. EZ30 is roughly $1500 for engine alone (depending on source)

Swapability. EG33 ecu can be isolated quite simply from the rest of the harness in comparison to the EZ30, ez30 has MANY more security issues, especially the VDC versions (vehicle Dynamic Control)

Heads. Ez30 is a single port exhaust for ALL 3 cylinders (6 valves), EG33 is a triple port design, 2 valves (one cylinder) per port.