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Only in the saw world would someone take pride in running epoxy through a motor, then proclaim it wont hurt anything because you got away with it once.. Bravo!

I wouldn't use any epoxy in the exhaust port.

You can lead a cull to water but you cant make him drink... JB might work fine until it doesnt. And it probably cost more when you figure price per unit. I know for a fact JB is very brittle and Devcon is not because I have used them alot in industry. Belzona makes good products also. As for...

Devcon "F". Its what two stroke guru Kevin Cameron reccomends.

Devcon and JB are not in the same league. The only thing I will use JB for is bedding rifle scope bases. Because it's easy to break/ remove when you want to switch bases.

Dont use JB weld. Its garbage. Get some Devcon brand epoxy.

Brad, what's your issue with using epoxy? Some of the best engine builders I know of use epoxy when needed. I have owned several motors with epoxy in the transfers and have had zero issues.

Extra octane doesnt hurt anything, it's just not as important as distillation curve and oxygen content when it comes to being used in a saw.

Ethanol isnt as big of a deal with four cycle engines as they dont have raw fuel sitting in their crank cases like a two stroke does. Since ethanol attracts moisture it's not easy to figure out where corrosion is an issue. Using ester based oils only makes this worse. Like wise the carb...

Terry is right. Decreasing crank case volume typicaly makes slightly more power at the expense of power curve width.

Crankworks in Arizona does great work too.

That wouldnt change the stroke. Just the dwell time.

I'll run ethanol 87 in all my four cycle stuff, except for storage. For storage I run the engine dry and fill the tank full with avgas. That stuff stores forever. For two cycle engines I will not use ethanol at all. The biggest problem with it is it doesnt vaporize in the crankcase and as a...

Actually given the fact the fuel in question is oxygenated you will make more power with it. Useful for racing, but I cant see it for everday use given the low compression ratios of chainsaws.

I'm wondering if something else is going on here. Hard to tell from the pics, but it looks like detonation maybe given the blasted appearance? Perhaps the fuel was contaminated? Plug looks really crusty and nasty.

Over the years I have seen many wonder lubes appear, then quickly disappear. Blue Marble is one that comes to mind, but there are many others. The odds of a small blender having the resources to actually research and develop something new in the lubrication world is about zero. The small...

Elusive because it's from the early 80's...

Most TCW3 oils will pass FB. None will meet FC or FD.

Likely snake oil.

I think I'd wait 5 or so years before buying one. I am sure there are more than a few cluster faqs lurking in this new design. The specs are impressive though.