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Thread: 441 vs 440 BB

  1. 01-25-2010, 05:58 PM #31
    Wild Knight
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    Quote Originally Posted by Terry Syd View Post
    Great tests guys!

    In regards to the 441 being able to retain its torque better with the 9 pin, were both saws ported with the same intake duration? The reason for the question is that with the extra intake flow area of the strato port, a strato should theoretically be able to flow more air with less duration than a single port - thus a slight reduction in intake duration could give the same flow as a conventional engine, but with more ability to retain torque.
    When we lowered the jug, we did reduce the intake duration. Not sure if the intake durations are the same or not. One other reason that the saw holds its torque better is the 4 port transfers; the 440 BB only has 2. This may support more air flow under load, resulting in better torque compared to the 440/460.
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  2. 02-06-2010, 03:56 PM #32
    wigglesworth
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    Thought I'd chime in a bit. I got to sink said saw into some walnut this morning and have to say I was more than impressed. Gob's of torque and good RPM's in the cut. My hat's off to Erick on the build and a big thanks to Wild Knight for giving me the opportunity to run it. This saw has definitely changed my outlook on strato's.
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  3. 02-06-2010, 06:35 PM #33
    catbuster
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    Nice. This makes me want to get a 441 and port it even more. But, I'll port it a little different.
    Last edited by catbuster; 02-06-2010 at 06:37 PM.
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  4. 02-06-2010, 06:38 PM #34
    blsnelling
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    Quote Originally Posted by Wild Knight View Post
    When we lowered the jug, we did reduce the intake duration.
    Dropping the jug increases intake duration.
    Brad - Snellerized Saws

    Have a 201T that doesn't run like you expected? Need a new one that's already modded and ready to go? PM me for details.
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  5. 02-06-2010, 06:47 PM #35
    Wild Knight
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    Right, it opens sooner and closes later once the jug is lowered. Sorry for the typo...
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  6. 02-06-2010, 06:48 PM #36
    Wild Knight
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    Quote Originally Posted by catbuster View Post
    Nice. This makes me want to get a 441 and port it even more. But, I'll port it a little different.
    How different? Why?

    Let me know when you're ready to run it
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  7. 02-06-2010, 06:54 PM #37
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    Quote Originally Posted by catbuster View Post
    Nice. This makes me want to get a 441 and port it even more. But, I'll port it a little different.
    I wouldn't do that. 441s don't take well to mods
    Brad - Snellerized Saws

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  8. 02-06-2010, 06:57 PM #38
    rms61moparman
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    I have to completely agree with Wigglesworth!!!!

    I, too ran that saw in that same 20"+ Walnut and all I can say is it is unbeliveable!!!
    I have had a few saws in my hands over the years and that is without a doubt one of the strongest for its size that I have ever had the pleasure of running.

    Erick, you did a FANTASTIC job on that saw.
    Any time you want to tinker with one of mine, it will be at your disposal!!!LOL

    Once again Christopher, thanks for coming up to help a brother out (and you too Jeremy) and thanks for allowing me to run a truly great saw.


    Mike


    P.S. .....Sorry the soup wasn't better.
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