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Mildly porting a 026

SawAddictedFarmer

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I've got a friend's CLEAN red lever 026 torn down. Here's where I'm at I don't have the time tools or desire to to a full job, what I'm planning to do is a muffler mod, match the cylinder to the intake boot and widen the intake and exhaust. Thoughts? Opinions?
 

SawAddictedFarmer

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Maybe just a timing advance, muffler mod and match the intake to the manifold? I can't afford to screw anything up...
 

SawAddictedFarmer

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If you cannot afford replacement of parts you ruin, I would leave it alone!
It's not that so much that as I just don't have time to do it twice. It's a very good friend that doesn't care what I do so long as it cuts nicely. I just always feel the need to try and squeeze as much as I can out of a saw...
 

SawAddictedFarmer

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As soon as I get this round of stuff finished we have to get our case 1070 in the shop and split it...
Hopefully we don't have to tear in too far but I pretty well takes up the shop.
 

SawAddictedFarmer

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So back to the saw. For a timing advance how much do you take off the side of the key and which side? Muffler mod, can I just cut the hole top to bottom into a slot? Does grinding the exhaust more cone shaped without enlarging port on the inside help? Thanks!!!
 

lehman live edge slab

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So back to the saw. For a timing advance how much do you take off the side of the key and which side? Muffler mod, can I just cut the hole top to bottom into a slot? Does grinding the exhaust more cone shaped without enlarging port on the inside help? Thanks!!!
First off don’t do anything to muffler till you make sure the carb is a fully adjustable one. If it doesn’t have a wt-194 with both high and low jets you can’t adjust to more open muffler.
Second make sure you know how to tune a carb properly before doing anything to it, only reason I say this is I don’t know your skill level and you just asked about how much and what side of key to remove to advance the timing. Lastly you can’t run this saw without a base gasket so don’t even attempt a gasket delete because the piston will slap the band on the edge if not removed. Far as timing gos I remove about 20 thousandths off the key and you install it so the flywheel gos further counter clockwise looking at it.
 

SawAddictedFarmer

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First off don’t do anything to muffler till you make sure the carb is a fully adjustable one. If it doesn’t have a wt-194 with both high and low jets you can’t adjust to more open muffler.
Second make sure you know how to tune a carb properly before doing anything to it, only reason I say this is I don’t know your skill level and you just asked about how much and what side of key to remove to advance the timing. Lastly you can’t run this saw without a base gasket so don’t even attempt a gasket delete because the piston will slap the band on the edge if not removed. Far as timing gos I remove about 20 thousandths off the key and you install it so the flywheel gos further counter clockwise looking at it.
It's the fully adjustable wt-194. I and the guy who owns the saw can both tune. So looking at the non pto side you take off the right side of the key? I wasn't planning on messing with the squish. Much thanks!!!
 

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I'd definitely do a muffler mod - gut or drill out the baffle and add another port. From there, I'd do a base gasket delete or use a thinner gasket. Having said that, I've built and tweaked an 026 before, and I'm thinking @lehman live edge slab is right about not being room for a BG delete. If you're intent on grinding on the jug, I wouldn't make the ports taller, but I'd see about widening the exhaust port to match the gasket and muffler.
 
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