Stihl MS440 (2 slightly different saws)

[dall]

the recommended is conservative factory spec

 

[mdavlee]

I like them closer to spec unless milling. A stock 372 with muffler mod will go to 14k or higher

 

[RI Chevy]

I lost the limiter plugs, installed a new air filter, readjusted the carburetor with the H1, L1 presets and retuned the LA. I hit about 13450 RPM'S and it was still 4 stroking. Unfortunately I didn't have any wood to test it in. I will test it and do another vid as soon as I get some wood.

Running VP SEF with Saber at 40:1.

 

[RI Chevy]

PLEASE EXCUSE THE PHONE RINGING. LOL
IT WASN'T IMPORTANT.
This is a quick video cutting a white oak crotch after I lost the limiters, installed a DP muffler and retuned to H1, L1. I am actually about a half turn further out past the H1. The video actually doesn't show it, but it was 4 stroking pretty good. It tached out at 14335 RPM'S. I fattened the tune a little right after the video.

Not bad for a stocker.
20" 3/8 .050 bar that came with the saw. 3/8" Oregon full comp chain.

 

[old guy]

View attachment 53768 PLEASE EXCUSE THE PHONE RINGING. LOL
IT WASN'T IMPORTANT.
This is a quick video cutting a white oak crotch after I lost the limiters, installed a DP muffler and retuned to H1, L1. I am actually about a half turn further out past the H1. The video actually doesn't show it, but it was 4 stroking pretty good. It tached out at 14335 RPM'S. I fattened the tune a little right after the video.

Not bad for a stocker.
20" 3/8 .050 bar that came with the saw. 3/8" Oregon full comp chain.

440 I had was doing the same

 

[RI Chevy]

Nice. Was it stock? I think stock RPM'S are 13500.

 

[jmssaws]

If you don't like the ram air hood scoop on the walboro you can just remove it and put a old school diaphragm cover on it.
Ram air snorkel never botheredme though

 

[RI Chevy]

Does it do anything Jason?

 

[jmssaws]

Like Mike or someone said it allows it to compensate as the filter cloggs so no it doesn't really do anything so I see no reason to bother it.

 

[RI Chevy]

Ok. Thanks.

 

[jmssaws]

I think the intellacarb showed up in the late 90's

I know I've seen 066's with it

 

[old guy]

It was stock.

 

[RI Chevy]

Nice. Thanks. You still running it?

 

[junkman]

 

[RI Chevy]

Wow. With a stock 440?

 

[junkman]

Wow. With a stock 440?

Was actually a little rich still ,it cleaned up a little over 16k ,but i turned it back to this reading for safety .
Define stock

 

[RI Chevy]

Unported. That's really humming along Bryan.

 

[junkman]

Unported. That's really humming along Bryan.

well.....

 

[RI Chevy]

Well what. LOL Were those RPM's from a ported or unported saw? Had to be ported.

 

[junkman]

Well what. LOL Were those RPM's from a ported or unported saw? Had to be ported.

Yup ,had 3 ports in the muffler .