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#Post#: 14335--------------------------------------------------
Muffler mods
By: JOE.G Date: December 25, 2012, 3:04 pm
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I hear of people removing the Spark screens, does it make a
difference? In Power? In sound? Pros? Cons?
My 562 XP doesn't have one but the rest of the equipment in my
sig below does, Should I remove it from any of them? Should I
leave it in some of them? Thanks
#Post#: 14336--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: December 25, 2012, 3:18 pm
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I have a bunch of Mufflers that I have modded and I always leave
a spark screen in. The reason is because if you cut on National
Forest land or BLM land it is required by law that they be in
there to prevent fires. If you are looking for all out
performance then removing it does help but I would be willing to
bet if the spark screen you have is good and clean that without
doing a complete muffler mod you may not even notice the
difference. What I like to do is open up the baffles inside the
muffler and open up the outlet for the muffler but leave a spark
screen in. Opening up the muffler though will definitly make it
louder. But to answer your question removing the spark screen
does help improve performance.
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2005;image[/img]
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2007;image[/img]
#Post#: 14337--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: December 25, 2012, 3:27 pm
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On this one if you look real close into the pipe you can see the
screen in there.
Also I forgot to mention that anytime you change the flow of
exhaust through a muffler you need to change the fuel mixture
setting also because it will affect it.
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2009;image[/img]
#Post#: 15243--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: January 12, 2013, 10:58 pm
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Thought would show another MM. This is on a J-red 670 and once
again there is a spark arrestor screen inside. I used one from
a Poulan muffler that wraps around the baffle.
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2133;image[/img]
#Post#: 15244--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: January 12, 2013, 11:04 pm
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This Muffler Mod is on a Poulan 335. You can see I cut a slit
in the side of the muffler and then open it up with a screw
driver and pliers. If you look real close you can see the
screen inside.
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2135;image[/img]
#Post#: 15247--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: JOE.G Date: January 13, 2013, 6:02 am
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I see you like to keep your screens in, Some people swear they
restrict others say they don't.
#Post#: 15248--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: Al Smith Date: January 13, 2013, 6:04 am
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TW AKA Brian W. of Ont where ever he went had a formula of how
much to increase the size of the exit hole to equal about the
same size were the screen left in a standard size hole .
As far as to screen or not to screen there are mixed opinions on
that subject depending on local .In this portion of Ohio you'd
be hard pressed to start a fire unless you were in the middle of
a wheat field in July .If you were I'd well imagine you'd have a
very upset farmer to deal with .Probabley not a good plan .
#Post#: 15251--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: TORX Date: January 13, 2013, 8:08 am
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For my personal use. I remove the spark screen. But if i'm muff
moding someone elses saw, I'll put a screen in the extra port.
Just because....
#Post#: 15259--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: January 13, 2013, 11:05 am
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[quote author=JOE.G link=topic=1419.msg15247#msg15247
date=1358078559]
I see you like to keep your screens in, Some people swear they
restrict others say they don't.
[/quote]
Well Joe I do keep them in because these saws will be used on
Public land and it is required by law. But I do believe that
if the baffle is opened up and the exit hole is opened up to, if
not larger than the size of the exhaust port on the cylinder,
that I will still see decent gains in performance. That is one
reason I try to use screens that wrap around the baffle 360
degrees because it gives alot of area for the exhaust to flow
through.
#Post#: 15260--------------------------------------------------
Re: Removing Spark Screens, Does it make a difference?
By: 3000 FPS Date: January 13, 2013, 11:12 am
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Ok I decided to take a picture of the type of screens that I
like using the most.
[img]
HTML http://chainsawrepair.createaforum.com/index.php?action=dlattach;topic=1419.0;attach=2144;image[/img]
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