help i need more top end speed for my racer. its a jd spitfire chassis with a 335 single rotax. im using a mikuni 34mm carb open expansion chamber exhaust stock clutch. I would replace this clutch if i could get it off. i know its threaded on but wont budge.any advice would be appreciated.

Hi there.
I can't help you with your question but I have one about the carb you have used.
I have a 69 Oly with a rebuilt 335 that I want to change the carb on.
Could you please give me some information about your carb. I am really tired of messing with that tillotson.
Thanks alot
Matt