Quote:
Originally Posted by ogg vorbis
excellent find, sierrags! i noticed it in my thread as well 
what i see is an R07 type head, splayed valves, probably 4.185" x 3", 2699 cc, 2.2" x 1.625" valves. the R07 ports are already dead straight; i don't know why they moved the cam - it'd benefit inline valves the most. this makes me wonder if the LS engines will become reverse flow, like the new diesel.
i had no idea chevy was developing their own midget engine when i posted this last december (post #38): New V6 needed do i think this has production potential? abosolutely; albeit with an LS head for commonality. the complete engine weighs 220 lb! the ecotecs weigh 265-285 lb (atlas are heavier, and redundant) and there's tons of potential in the engine for turbocharging! it'd be cheaper than the ecotec too. imagine a lightweight 200 hp 3.0L I4 in a colorado, or solstice 
the dodge midget engine does really well. 2.66L, 4.130" x 3.03", 350 hp @ 7200, 265 lb-ft @ 6500, and redlines at 8500 rpm. 10 mpg for n/a 131 hp/L is really good. http://www.moparperformanceparts.us/...dHardware.html
the EPA has asked manufacturers to stop the horsepower war. we're at the peak right now. look for torque to become the star...which means more diesels and 2v. 2v naturally make more torque down low, without all the variable intakes/valves/etc. i wouldn't be surprised if gm scrapped the 3v motors. |
You got this engine just about right in your post in December without knowing about it, good call.
What interests me about this engine is how low it is which can help lower the hoodline of a car powered by it, this really opens up some design possibilities.
I know this is a race engine first and doubt we will see it in a future GM car but I bet some of the valve train technology will find its way there.