My Buddy Dave's MS260 and an AM vs. OEM Jug Comparison

[Jswanson]

I think he's an angry elf.

Lol. He do you wrong?

 

[drf256]

Lol. He do you wrong?

Not myself, but quite a few guys that I'm lucky enough to call my friends now. Seems like he picks a lot of fights.

 

[Redfin]

Doc, great work as usual. Thanks for this thread. I always enjoy your work.

 

[MustangMike]

Added the slick Canadian Farm Boys V stack elbow kit. Saw picked up 500 rpm. Happily 4 stoking at 16,200-16,300. Was still 4 stroking a little in the 17's.

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Did Mike make that??? That is really slick!

 

[drf256]

Did Mike make that??? That is really slick!

Yes. Mike @Canadian farm boy made the elbows and the choke levers. He's quite a craftsman and put a lot more work into them than shows.

I do believe that they added some umph to this saw. Kinda like a little tunnel ram.

 

[lwhaples]

Awesome build!

 

[MattG]

@drf256
Just found this thread. Thanks for posting those pics on the first few posts. Very good comparisons on the quality of the ports on those jugs.

 

[bikemike]

This is a 44.7 and apparently a new offering from meteor. The 44mm may be much better.

44mm is the old oh26 pro bore?

 

[bikemike]

Good eye.

Cedar and I believe 10". Closest think to pine I have down. I find its only a tick faster to cut than hardwood because it loads up the chain more, you wouldn't think that but it's true-especially with picco.

Chain is picco, square filed by Mike (Canadian Farm Boy).

Time for some cottonwood for that Lil chip ripper

 

[bikemike]

That is a nice 026 Pro!

260 pro. Flippy caps

 

[RI Chevy]

I believe 026's and early 260's were 44mm.
Not sure exactly when they went to 44.7mm.

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[Wonkydonkey]

I believe 026's and early 260's were 44mm.
Not sure exactly when they went to 44.7mm.

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Yep, I've got a ms260, it had a/some 44mm p&c then I got a 44.7. I put it on and took it off. It did not run right, I had no clue what I did wrong so I put the old 44 back on, and now I'm keen to have a go porting this 44.7 f-tec thing and setting the squish etc...
So this is the sort of thread I needed to help me.
Cheers to Drf256

 

[bikemike]

Yep, I've got a ms260, it had a/some 44mm p&c then I got a 44.7. I put it on and took it off. It did not run right, I had no clue what I did wrong so I put the old 44 back on, and now I'm keen to have a go porting this 44.7 f-tec thing and setting the squish etc...
So this is the sort of thread I needed to help me.
Cheers to Drf256

I had a 260 come in with a *f-word tec jug on it. No rpm no power no pick up put oem jug on. Mm and vroom off it went

 

[drf256]

I believe 026's and early 260's were 44mm.
Not sure exactly when they went to 44.7mm.

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You'd be correct Jeff.

I'm not sure on the year it changed. I was told that they went to 44.7 because of EPA rules choking down power. The increased displacement was supposed to balance that out.

The 44.7 saws say 50cc and not 49cc on the tank label. They also have a small heat shield between the jug and the exhaust gasket that the 44mm lacked.

 

[Basher]

You'd be correct Jeff.

I'm not sure on the year it changed. I was told that they went to 44.7 because of EPA rules choking down power. The increased displacement was supposed to balance that out.

The 44.7 saws say 50cc and not 49cc on the tank label. They also have a small heat shield between the jug and the exhaust gasket that the 44mm lacked.

Sometime shortly after 2002, best as I can tell from reading tech bulletins from Media Cat but no serial number cutoff .

 

[RI Chevy]

Cool. Thanks for the update.

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[Duane(Pa)]

Take a look at a stock MS-260 exhaust outlet

That is it.... those screws are 5 mm just for size reference. Kinda pisses me off, but I know a guy...(Dr. Al)

 

[MattG]

Take a look at a stock MS-260 exhaust outlet
View attachment 77700
That is it.... those screws are 5 mm just for size reference. Kinda pisses me off, but I know a guy...(Dr. Al)
View attachment 77702

Cripes!! You may as well just throw the whole damn muffler away!!

 

[Duane(Pa)]

Cripes!! You may as well just throw the whole damn muffler away!!

That's how we roll over on this side...

 

[Dub11]

That's how we roll over on this side...
View attachment 77704

What? I can't here you lol !



There not too bad really