z1 zonly

Thanks a bunch for the thread Powerstroke. Suffice it to say that I'm disappointed that it takes a wrung-out 421 on high octane to make 100hp at the crank. What can I get out of a stock-cylinder Banshee engine that's ported with carbs and chambers on pump gas at ~600ft elevation? Same setup with Cub cylinders? Same setup with Cub cyls and 4mill crank?

Thank you, and thank you. Really hoping this comes to fruition and I can stick around.

Hi all, brand spankin n00b here. I'm really into vintage cafe motorcycles and recently completed a '75 Yamaha RD350 build (pic). In the quest for more power though, a Banshee swap has caught my eye. 4L0 LC cylinders will bolt on to the air-cooled motor and are good for ~70hp ported, but on top of being extremely difficult to find themselves, a water pump from a rare vintage 2-stroke has to be sourced, pushing the cost into Banshee engine territory. Basically what it all boils down to is that I'd like to come away with 70-80+whp, streetable gearing, pump gas ability, pretty reliable, etc. What setup should I be gunning for? Do I need to go with Cheetah or Cub cylinders to achieve this? I've been researching this for a good bit now, but it's hard to find consolidated (or reliable!) figures for power/fuel type/setup. Also, do any options exist for compact radiators? And will the Banshee charging system sustain street lighting equipment (50W headlight, turn signals, LED taillight)? Will I need to run a battery? Thanks in advance!