If you're wanting to get in the 50hp range a properly setup 310 will do the trick. The biggest problem when switching to the 330 and up cylinders is that you have to machine your cases to accept the larger sleeve. This means splitting your cases, etc., whereas with the 310 you'll be able to bolt on and go. And I highly do not recommend getting one of ESR's bolt 330's, because with those you do not get as many overbores, which means re-sleeving would come sooner than desired. It really depends on your riding syle/situation, as far as porting and other bolt on mods goes. If you're sold on ESR I'd say that the TRX9 porting is your best option. If you want more top end power I'd get a 39 PWK (potentially bored to 40.5), VForce 3's, and adjust your LRD pipe to it's top end setting (I'm not familiar with LRD's adjustable pipes, so I have no idea how to do this). If you're looking for more all around type power, I'd run a 38 A/S PWK, Boyesen RAD Valve, and adjust your pipe accordingly. The 310 should get you into the 50-55ish HP range and the 330 should get you into the 55-60ish HP range. These numbers aren't set in stone and can be dramatically different with each setup. Just trying to give you an idea.
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LSR 250R |