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hultman 11-16-2012 04:58 PM

F4 - h4?
Looking to buy my first WRX, and I keep seeing engine references either F4 or H4. What's the difference?

man show 11-16-2012 07:39 PM

They are just two different acronyms for the same engine.

F4 = Flat four cylinder engine.

H4 = Horizontally-opposed four cylinder engine.

Both refer to Subaru's horizontally opposed piston design, also known as a boxer-style engine. The main benefits of this style engine are that (1) the engine is naturally balanced and (2) it helps keep the center of gravity lower.

RcrsWetDream 11-16-2012 09:52 PM

1 Attachment(s)
^ Don't listen to this guy.

It's actually referring to the jet engine from an F-4 Phantom that the WRX has. Something along the lines of 10,000hp equivalent of thrust.

[COLOR="LemonChiffon"]Ok he's right[/COLOR]

brfatal 11-16-2012 10:08 PM

Technically speaking it's an H-4.

man show 11-17-2012 08:36 AM

Technically speaking, shaddup! :)

psinuse 11-17-2012 03:09 PM

These guys are all full of it.... F4 stands for the upgraded version of the F1 motor that comes in the the race car... H4 stands for the 4 wheel drive system.... Geez you'd think all these guys with the "fast subaurs" would know this.... *snicker*

brfatal 11-17-2012 04:03 PM

Technically speaking I have the slowest Subaru here.

[COLOR="Silver"]It will only go as fast as you can push it.[/COLOR]

man show 11-19-2012 10:47 AM

Don't worry brfatal, I'll find you a really big hill to push your car down!

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