4sd4dr wrote:
Whats the benefit of this over say a B17 engine or something? the fact you're going to stay nonvtec?
Sounds like a waste but then again I dont really get into engine theory all that much.
A real B17 has worse r/s ratio than a B16. The purpose of this build is maximum r/s ratio and shorter stroke, which always is best for high-rpms. This combo slows down the speed and max acceleration of the pistons and decreases side-loading on the cylinders. This also keeps the piston near TDC for more degrees of crank rotation, resulting in more complete & efficient burn cycle, ability to advance timing more with higher compression or lower octane.
The larger bore should add some torque over the B16. I'd go for like 12 or 13:1 c/r, 405 cams, major port grindage, a P8R head with 1mm oversize exhaust valves would be great. You could top 9000rpm and I think you'd also net over 200whp. It'd be a great race motor in a little hatch with a 4.7 f/d trans.