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2100 that I’ve been slowly putting back together. Got it on a trade for some other saw repair work. Had a chunk missing from the tank handle, plastics were really faded, was caked with dirt…looking much better now - I’ll see if I regret taking the base gasket out. Squish is still at .037. - It’s missing one of the starter pawls, so I still need to address that before running it too much. A few other odds and ends to take care of, but I’m looking forward to having this in the stable.View attachment 1011552View attachment 1011554
If you need to source a starter pawl let me know and I'll hit up a buddy, he should have one or two he'd get rid of.
 
Started on a little side project, kind of experimenting with a couple different ideas for a 044/46 hybrid. I'm just experimenting on cheap aftermarket cylinders this time. First one will be a piston with tapered edges and a combustion chamber to match. The 2nd idea is to use a 064 piston and machine it into a domed piston and mill the 460 cylinder to fit it...that's probably going to be the better option, as the 046 piston skirt length is kind of limiting.

Just a start...nevermind the sharpie marks that were "indicators" for the milling:
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2100 that I’ve been slowly putting back together. Got it on a trade for some other saw repair work. Had a chunk missing from the tank handle, plastics were really faded, was caked with dirt…looking much better now - I’ll see if I regret taking the base gasket out. Squish is still at .037. - It’s missing one of the starter pawls, so I still need to address that before running it too much. A few other odds and ends to take care of, but I’m looking forward to having this in the stable.View attachment 1011552View attachment 1011554


Gave it a little workout today 😁
 


Gave it a little workout today 😁

Just a friendly heads-up, I'd run a prefilter on that type of filter, and I prefer/recommend the green Uni foam-type filters for saws. I reckon there's gotta be a reason Maxflow uses green Foam inserts for their filter kits.
 
Just a friendly heads-up, I'd run a prefilter on that type of filter, and I prefer/recommend the green Uni foam-type filters for saws. I reckon there's gotta be a reason Maxflow uses green Foam inserts for their filter kits.
Best of both worlds, or too much?7E5DADB8-10DE-4912-9845-F5494B598E84.jpeg
 
Best of both worlds, or too much?View attachment 1012324
I'd say it'll work, a buddy runs a Maxflow foam element over a Stihl HD2 filter on his 066 and it works just fine. I'd still oil that prefilter, though. I've got about 1/2 a bottle of filter oil that can go with the pawl if you want some.
 
It’s been oiled - it’s part of a Uni I had on my 181 - I was getting more fines through than I liked, so I got these K&Ns that I thought might seal a bit better. With both the pre filter and cones oiled, hopefully it’ll stop most anything now…
 
It’s been oiled - it’s part of a Uni I had on my 181 - I was getting more fines through than I liked, so I got these K&Ns that I thought might seal a bit better. With both the pre filter and cones oiled, hopefully it’ll stop most anything now…
What sorta oil do you use? I get mine soaking wet, while yours still looks pretty dry.
 
K&N or the Uni? For the K&N I use the red oil that it comes with. The Uni gets a good spray of the tacky Uni foam filter oil. I don’t get it sopping wet - I have it so that I don’t have excess coming out when I squeeze it. I figure that if the oil is on all the surface area, it’s doing it’s job. Any wetter than that and you end up filling pores and inhibiting air flow - it’s a balance…
 
Took today with the good and the bad....

The bad... Went to final cold start and run the 2nd TS420 concrete saw and the damn pull cord gives up the ghost on the first try with the decomp pushed in! Uggggggg.... But, better now than back with the customer after a few hundred put into it.

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The good... or good as it's gonna get!

Put the dumpster fire Ryobi trimmer back together after a complete tear down to the block to clean out the carbon plugged transfers and de-carbon the piston and ring land. It was nasty in there! Of course I had to get a base and rear crank cover gasket so that brings my total bill on parts up to $32.

Free labor as the trimmer was a freebee but I just couldn't give up based on principle of "It's just a simple 2stroke engine"! Challenge accepted.... So in the end, it runs perfect now. Winning!

So, who's in the market for homeowner Joe 20 something year old Ryobi???? LOL

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Finished up the 446 hybrid build. I'm impressed with the results...the bore finish on this particular cylinder(aftermarket) is absolutely atrocious, so I'd expect even better results with an OEM or Meteor 460 cylinder.
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You can't really see it, but I went with a fairly rectangular-shaped intake:
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Smooth, yet not highly polished exhaust...this is purely experimental, so I wasn't going all-out on the finish like I normally would. This is a farmertec cylinder, notice how "uncentered the exhaust was. I've at least got the sides pretty square to each other, but I had to hog a crap-ton of material out of one side to do it.
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Ugly hone, just my usuall opening up of the lower transfers. Very minimal work to the uppers:
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Bonus content, clutch drum was heavily grooved and was almost mimicking a hanging idle...it was just getting stuck engaged. It really needs a new drum, but this is the cheese-ball and el cheapo way to address the issue...but it works lol:
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All done, impressed with the results. This has a tapered edge on the piston and tapered squish band. On the negative side, it has some free-porting on the exhaust. Next iteration will be with a 064 piston. I should be able to turn that into a domed piston and solve any free-porting issues.

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Next project showed up last night. Not a full build, owner just wants it to "run better." I'm thinking timing advance and muffler mod.

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