Mazda3 2.0L with 148hp. Howd they do it.
 

Okay, I like all the pictures and I think the thing is going to be a good seller, but for all of us that are not going out to get a brand new car, could someone explain the engine mods Mazda did to increase the hp some 18 points over a regular current 2.0L. And most importantly, could we use these mods to improve our current rides?

I think this motor is completely different from the one in the Protege. I'm not sure about this, but I think I read that somewhere.

don' t really know the answer......but the 2.3L uses variable valve timing. I would think that the "new" 2.0L uses variable valve timing as well...

Much better architecture in the new engine. And 148hp out of 2L isn't a huge output (considering Acura gets 160hp out of their "mild" RSX motor).


By architecture, I mean everything from valve size, valve angle, combustion chamber shape, intake and exhaust designs, cam timing, etc.

I asked a dealer in the Toronto, Canada area and it said the new 2.0L engine will only be 130hp. Makes me wonder if it is the
"new" engine is really new.

However, if hes wrong and we do get the 148 or 150hp engine, it will be Mazda's new MZR line of engines. Completely new engine from the FS-DE. The MZR has intake manifold in the front and exhaust in the back opposite to the FS-DE. The setup is like those on newer small sedans.

the FS-DE is dead....the Mazda3 will be using 2.0L and 2.3L MZR engines....PERIOD

intake in the front exhaust at the back......hmmmmm sounds like the corolla engines (hopefully the can match some of the fuel efficiency of the corolla engines too). I wonder if this will help the exhuast gas flow?

the new corolla/matrix had the exhaust manifold in the back of the engine.....and if my memory is right they used a nylon intake that was orriented in the front of the engine.

HEHE, maybe I'm just tired, but it just seems to match the quote to me :D

Well think Honda 2000S make 240HP from 2.0L . 148HP NOT THAT MUCH!!! BUT nice :)

The new Honda K series engines have their intake manifoldin the front and exhaust manifold in the back I think.

Moving the exhuast manifold to the back serves two purposes I know of. First it allows the car to heat up the catalylic converter more quickly for lesser emissions. The majority of harmful emissions is produced at startup when the cat is cold.

Second, its more quiet at startup since the intake manifold is located away from the passenger compartment. Don't really understand this since I heard it from a sales person.

Maybe this design allows for only one cat instead of two?

is this engine built in japan? shared with ford? built by ford? ford quality? mazda quality? :dunno:

It is the same motor that the new Focus is going to have, as well as the Volvo S40 and any other 2.3 liter Ford Motor. It believe it was designed by Mazda so it will have Japanese integrity. Go drive a Mazda 6, 4 four banger and have yourself a test.

The 2.3L in the Mazda6i is a good motor! It makes pretty good power for a heavy car. I am still floored that such a progressive company like mazda denies us the reliability and performance of a good roots-style blower. They get a lot of power out of their fancy intake designs, but cramming that air in there will make a lot more.