Tunnel porting.

[smokepole]

I've got an 026 I picked up a while ago, getting ready to put it back together shortly. Has anyone found any gain from tunnel porting the case. These cases seem to have a very flat shelf into the transfers. Just wondering if grinding a transition trough on each side would produce any gains? I'm not looking to build a race saw, just a woods mod.

 

[drf256]

I don't think there's much room there until daylight appears.

Never done it myself and I've rebuilt a few of the model.

 

[Brewz]

I've rebuilt a few of the model.

Yeah but non of them go any good

 

[drf256]

Yeah but non of them go any good

Generally duds...

 

[Basher]

I don`t want to loose any more case compression down low as opening up the upper transfers already lowers case compression on my saws but a bit of JB weld/epoxy in the right places restores some of the lost area.

 

[Basher]

Generally duds...

Not what I have seen...LOL

 

[smokepole]

Just wondered if a little notch in the back on each side would help as the crank comes up around. Possible 1 cc or less on each side removed. I would think some of this could be made up by cutting cylinder base or the gasket delete.

 

[drf256]

No one ever figured anything out by not trying. Go for it.

 

[mdavlee]

Look into tree monkeys build threads. You may find something similar to what you're thinking about

 

[jmssaws]

I say grind away,parts are cheap and gains are hard to find anymore.

 

[TJ the Chainsaw Mechanic]

turbocharge it

 

[Wagnerwerks]

turbocharge it

Would be cool with a blower sticking out of the top cover.