Originally posted by kenbdSi
B16 first choice. Make more power with less boost. Better flowing head, better rod stroke ratio,etc... LS/Vtec is a good choice if done the RIGHT way. Which in turn would probally cost more money than the b16. I would say a b16 with a b18c1(gsr) bottom end. With the b16 head on that block itwould yield the C/R to about 9:8:1 or 9:5:1 something like that. You get a bigger displacement, much better rod to stroke ratio and a better flowing head.
Actually the CR would be about 9.7-9.8ish according to C-Speedracing's websites Compression Ratio calculator with B18C block and B16A head. ALso incorrect is the rod to stroke ratio being better in the B18C motor, the B16A has a rod to stroke ratio of 1.74:1 , B18C is 1.58:1 and the wrost Rod to stroke ratio is the LS/B20C/Z at 1.54 rod to stroke ratio. The flow between the GSR and B16A heads are very very very close depends on which head porter you talk to, Seth at Abacus truely feels the B16A/Type R PR3 heads are better and that's why Honda cjose them to use them for the Type R motors. Longer stroke however will make more torque and low end grunt, my B16A wants to be revved, my next dyno will be revved to 9500rpms atleast since it did not die at 9000before kept climbing. HTH