Miller Mod Saws and the Ms150

[Miller Mod Saws]

Ok boys I haven't done a build thread in awhile and so I'm gonna do a mini one as this was an after thought. This is a customers saw that just wanted a muffler mod and timing advance. But this little saw intrigued me so I had to play. So here we go.

 

[Miller Mod Saws]

Here's the stock vid of it running.

 

[Miller Mod Saws]

Next and I don't have pics but I took the muffler off opened up under the stock deflector bent the deflector a little. Tested. Then advanced the ignition timing 5 deg. This is an excellent gain in these saws.

 

[Miller Mod Saws]

 

[Miller Mod Saws]

And here is whybjbwas intrigued. While this is a clam shell design. The crank/cranckcase is sepertate of the jug for starters. Second it's a strato motor.

 

[Miller Mod Saws]

Another pic.

 

[Miller Mod Saws]

And if that don't get ya goin. Maybe this well. Entire 150 motor vs 088 cylinder.

 

[Miller Mod Saws]

Here's som stock pics of the cylinder.

 

[husky362]

cool little engine woke up that saw

 

[Miller Mod Saws]

Stock numbers. I forgot to pull comp so forgive me. But that said.
Squish-.021"
Eyeballed numbers
Exhaust-113.5
Trans-130
In-69

 

[Miller Mod Saws]

Notice it has a press in sleeve.

 

[Miller Mod Saws]

This is gonna be a one shot Trial to see what happens. Here's what I did.
Took .015" off base and squish.

Widened the exhaust and set at 113 deg.

Widened intake just to clean it up and set at 74.5 deg

Leveled the trans at 128 deg.

Trans look a little ruff as this is a 34mm bore engine and is tiny. I had no finish burrs that would fit. It's not bad just not as pretty as the exhaust and intake. Lol

 

[Miller Mod Saws]

 

[Miller Mod Saws]

I'm gonna post this vid. I think once the rings get reseated it gonna gain some more. But here ya go. Fresh off the bench. And tuned pretty fat.

 

[Miller Mod Saws]

So what y'all think of the little saw. Lol.

 

[TreeLife]

Nice little ripper! I bet it's a joy to limb with, especially once the rings seat and you can lean it out a tit

 

[Miller Mod Saws]

AND I WANT TO PUT OUT A BIG THANK YOU TO RANDY (MASTERMIND).

As i jacked up the choke shaft on this saw. And he sent me another one.

Thanks buddy.

 

[CR888]

Nice to see someone go a little further than basic mods on this saw. Interested to see how it ends up.

 

[Stackowood]

Squish is 0.006"? Thanks for showing us the insides! The press in sleeve is interesting, maybe less cost to manufacture.

 

[Miller Mod Saws]

Squish is 0.006"? Thanks for showing us the insides! The press in sleeve is interesting, maybe less cost to manufacture.

Squish is back to .021". I cut .015" from the base and the squish band.