Quote:
Originally Posted by serialk11r
If you look at the 1ZZ-FE development paper for example, you'll see that connecting rod mass does affect fuel economy on the order of ~0.5% for a ~10% increase. For the ultimate eco engine, you could have a low rev limit like a Prius (4000rpm), extremely thin titanium (you can go titanium MMC if that cash is really burning a hole in your pocket) or maraging steel rods or something that weigh 1/2 of stock (might not be able to go this light because of stiffness problems), extremely delicate and light pistons, knife edged crank, extremely weak valve springs, titanium valves, reduced deck clearance, 14:1 compression ratio with 280 degree intake cams that have very low lift. That would be like the dream efficiency engine, given a well sorted combustion chamber and direct injection and other goodies. Oh, multipoint laser ignition as Mazda is developing would help a little too, but you can't buy that.
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As tempting as it is to do a build like this, I'd am saving my big money for an electric build..... I have a K24 civic to build as well..... I need a damn sponsor
new accord 4banger is direct injected, looking into its possibilities as well, also that new Fiat car is cam less, very interesting as well.