I could never get the dual port jugs to perform as well as the quad port one do stock. It’s pretty crazy how what stone pellet think would be too big of a carb for this saw makes a way bigger difference than anything else.
Yeah k095 rings a bell. And the 20” bar isn’t 20”s worth of chain more like 19 and change. So you should buy a new bar or else if you want name brand chains you need to find the one guy on eBay making them to the right link count off of a spool.
The one of those I bought years ago that was advertised as and has 62cc stickers as 52cc. eBay seller refunded me even after I measured it and called them out.
put a nice arch on the port and match the piston to the port, you loose a little squish but the effective valve opens faster than a flat port of the same width.
I actually made 2 videos on modding these saws. I have one specific to the intake and carb mod and one for everything else.
Chinese chainsaw 372 carb and big intake
5200 Chainsaw Mods
I actually tried to run it a couple weekends ago to cut two small dead trees and I couldn't get it to start, even with some brake klean down the intake so I just grabbed another saw. I sprained my hand in the meantime so I've been struggling to take it easy so it can heal, which means I haven't...
Maybe with an expansion chamber but I doubt anyone using a muffler is seeing high enough dynamic compression to have that issue. You can't exactly put a huge amount of curve before getting uncomfortably close to the top ring land.
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