I see.
Me too, but mainly for firewood now, it's hard to deny the advantages to a 5 series or other brands of electronic carb saws in a work environment.
From what I've seen the 51.4 cylinders take a lot of work to make run as well as a 50mm, but I've never done the work myself, so I'm clearly just saying what I observed watching others work. I've had stock 51.4 saws, and the 50mm with a 268 pop-up will smoke them has been my experience. You should try one with the timing advance a bit and a muffler mod and see how you like them. If you'd like I'll send you a few pistons and you can do one for yourself and couple for me and keep the one
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I've got two oe's and have no interest in having them ported with the increases from just the piston swap.
I'm not sure what carb is on my 365oe, it's either the xt carb or a 390, but it beats the monkey ported 562, Kevin did the 365 and he does usually make them a bit spicer than Randy's builds( nothing against Randy's, just how it is).
It does sound like a little more velocity would a long way, maybe less crankcase volume
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