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Here is pipe I made

I know what you mean now about how bit reacts when grinding what makes it skip and what not. Hopefully cylinder comes in soon so we can press on. Gunna try practicing on junk cylinder to get better feel for the grinder.

Okay so I started working on cylinder opening up the transfers and my dremel jumped and took some small plating chips out of cylinder wall. So I'm gunna have to order a different cylinder.... the cylinder appears to have no markings on it so not sure what it is. I ended up ordering a hyway...

Without bg and yes I used thin solder

Gunna talk to machine shop Monday to see if they can cut 5 thou off base. Not gunna touch exhaust I don't think. Does anyone think I should lower intake? Or raise exhaust? And upper transfers? Looking at piston pins I could bring upper transfers back tword intake a little ways. Don't have the...

Okay got numbers, Exhaust 106 atdc Blow down 19 Intake opening 102 abdc Intake duration 158 degrees 25 thou squish

I've done a muff mod in the past I'll make a pipe for fun like the iron horse pipe and see what happens I'll keep the outlet 80% size in relation to exhaust port with the pipe same as I did with the muff mod. I'm guessing it'll be same power maybe a little more noise (which I don't care lol)...

Nice running saw! What would happen if you raised that exhaust? To my understanding it will increase rpm and move your hp curve higher. Bring down your comp too. But too much? What happens then?

Okay just got degree wheel in mail today. Will check sometime after work this week to see what my squish is at. I don't have access to a lath so I'll see what I can do as far as the 20 tho.

What do you mean by delete bg? I am aware of the timing advance how many degrees b4 TDC? Seeme to me everyone says 25-30 thou off key and that's that. I did build a pipe for it. If you go on you tube it's the ironhorse pipe. Ordered a new higher flow air filter as well. And some new crank...

I forgot to add this saw is gunna be a firewood cutter not a high output cookie cutter

Hey i got an o36 stihl that's a little tired out (bout 120psi) have it apart and am looking at the cylinder it appears to be in really nice shape. So I ordered a pop up piston and did some mild cleaning up on casting imperfections and deburring it. Now I'm looking to move onto cylinder I've been...