Author Topic: huztl cheat sheet  (Read 4384 times)

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Offline weimedog

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Re: huztl cheat sheet
« Reply #20 on: October 20, 2015, 07:15:58 am »
They aren't actually "bored" out stock/Huztl cylinders. They are a completely different casting from different molds & cores. I haven't put one on a degree wheel yet but I suspect they have different port timing from intake thru to exhaust. And combined with the shorter piston I suspect the timing is quite different. I don't know if the 56mm is a fresh design or random ... they run strong as delivered under load but I've had issues with the low speed/idle side. I suspect the intake has way too much duration for my liking. Where the 54mm use fuel at a rate consistent with a descent design, the 56mm is a bit of a hog. Maybe I'm just not used to 100cc saws.

I've got around 5 or 6 gallons of gas through these saws so far. Most through the 56mm

I have to wonder, on one of the 54mm builds, the metallic gasket interfered with the piston skirt on the first installation attempt. Took me a while to figure out what was going on. Wonder if something along those lines hurt the ones you had. At first I was thinking it was a misalignment of the cylinder bore to the case!

The other thing I found on one cylinder was a "burr" left in the combustion chamber from the tapping of the spark plug hole. That would have eventually come off and was enough to make a mess if it didn't go right out the exhaust

One thing I do know, I prefer to build my own for my work vs. trust non saw types to assemble those parts!

 

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