TBS
I have chainsaws and chainsaw accessories.
That exhaust port roof looks kinda flat. Could be sort of a ring wacker.
How is the chamfer on the inside of it?
Ever so slight which is common on a lot of zenoah designed cylinders.
That exhaust port roof looks kinda flat. Could be sort of a ring wacker.
How is the chamfer on the inside of it?
Remove the shaft and use a dremel to hog out just a little bit of the housing to fit a oring in as a seal/bushingsI have a Craftsman yellow GZ4000 that I did the same things to (base gasket, lower transfer match, muffler mod), and my Jenn Feng McCulloch MS4018 that I raised the exhaust port, transfers and also increased the strato intake duration. So this one will be in the middle.
I'm working on a mod to the Jenn Feng air valve, as I'm having trouble with shaft wear on the phenolic housing. There is a nice seal on one side, but not on the other and the phenolic housing wears at the lever end. Then the idle gets inconsistent. The design of the Zenoah valve is the same in that regard. I wanted to bore it out and put in a bearing and seal, but there is not enough material on the housing for that. Now I'm just looking to make a bushing/sleeve.
It's wallowed out too much for that - the shaft moves too much. I 3D printed a drill guide that fits in the housing, but when I make a bushing I'll print another with a larger ID to match the bushing. I may do an o-ring, but I don't want to add too much friction, and after all carbs work OK without them. But that won't effect this saw anyway as its air valve is good yet.Remove the shaft and use a dremel to hog out just a little bit of the housing to fit a oring in as a seal/bushings
Thanks! I really don't like C1Q'sSo I'm not the only one that had issues with that particular carburetor!lol. Your saw cuts nicely!
For general information: the strato Ryobi's were made in 40 cc and 44 cc [sold in Europe]. They were sold as Homelite also in both 40 and 44 cc. I'v had both Ryobi variants and i now have a 44 cc Homelite. The 40 cc Ryobi was Zenoah Komatsu ,the 44 cc[Ryobi and Homelite] built with chinese cylinders.
Pictures!
Well....... You got me thinking about that and I was going to post a reply to your message, but I'll just post it here. The carbs on these are little, like 24/64". That's because much of the air flows through the air valve, not the carb. But the 28/64" carbs are not that much bigger, and I was just contemplating giving it a try on a ported 40cc one I've been playing with. So I agree it might be worth the experiment. I have some carbs I can swap the shafts on.but Chris says the venturi size on the chinese carb is too big.
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