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Make sure when opening the ports that you don't go wider than what the piston crown will cover....best to leave about 3/32". The shape of the top of the port is important, too flat can snag the ring and do damage to it. Chamfer the inside of the port edges well. Take a good look at the edges...

I agree with you Al, he'll probably be alright with the piston clearance after eliminating the gasket, maybe just where he wants to be....but I have had a saw or two drop down to within .015" clearance without the gasket. I think on the safe side to check for sure.

If you eliminate the base gasket, you will need to use a liquid gasket type sealant in it's place, one that stands up to gasoline, heat, and pressure, or at least make yourself up a thinner gasket with paper or metal. You also need to check the clearance at the top of the piston with the...

Dremel tool and bits is pretty ideal for porting and polishing. You can do it with a drill as well, and even hand filing will work on the intake and exhaust ports. I begin by raising compression. I generally eliminate the cylinder base gasket and use a sealant there instead. You need to...

Just about any aspect of modifying, aside from muffler mods, is subject to varying opinions. Most people think that polishing the exhaust port after enlarging, will give additional gains. Sticking within the parameters of a basic mod to raise compression and give better gas flow, lightening...

Ever thought about modding your own saws, Squisher? It's a pretty cool practice.

After you've done a few mods, no saw seems to run like it should, at least the newer ones. Have yet to alter the 880 though, but I like to read Carl talking about his.

There are established conservative ways to modify a working saw (woods mod), where you aren't risking damage. How large to make openings, lightening a piston beyond a certain point is risky, etc. If you get into porting, it's good to practice first on an old cylinder that won't be used...

Dave....you've probably checked it out already, but cylinder head bolts can loosen up, causing an air leak. Are you working on an 036? They came with limiter caps?

Working in big wood, or say your consistently limbing downed trees....the saw is running constantly during a days work, my impression is that when you figure in the weight factor of a well done modified lighter saw, when compared to a larger stock saw that can put out equivalent power, you'll...

If I'm not mistaken, the stock 036 factory spec max rpm is 13000. It's hard to fathom 15,500 rpms just with a muffler mod. Even those saws in that series that have an internal baffle in the muffler, they aren't all that stuffed up. Normally with a muffler mod...a good one, you can expect an...