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#Post#: 79334--------------------------------------------------
CS 400 Muffler mod.
By: trail twister Date: October 25, 2017, 6:47 am
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A search didn't come up with any thing about modding the muffler
of a CS400.
Any one have pictures of what they did and be able to explain
the steps?
:D Al
#Post#: 79342--------------------------------------------------
Re: CS 400 Muffler mod.
By: Chainsawrepair Date: October 25, 2017, 8:47 am
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[member=267]mountainlake[/member]
#Post#: 79390--------------------------------------------------
Re: CS 400 Muffler mod.
By: Termitebuffet Date: October 26, 2017, 7:49 pm
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I ain't got no pics , but the cat has to come out ...
Sent from my SM-N910V using Tapatalk
#Post#: 79402--------------------------------------------------
Re: CS 400 Muffler mod.
By: mountainlake Date: October 27, 2017, 4:31 am
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, Same here, get rid of the cat and open up the exit. Steve
#Post#: 79451--------------------------------------------------
Re: CS 400 Muffler mod.
By: Jaymo Date: October 29, 2017, 2:16 pm
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Do you have to cut the muffler open, or can you use a spade bit
to drill out the cat honeycomb material and then use a drill or
hole saw for the outlet?
#Post#: 79463--------------------------------------------------
Re: CS 400 Muffler mod.
By: Fishnuts2 Date: October 30, 2017, 7:25 am
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You won't be able to cut that cat material with a spade bit for
sure as that stuff is very hard. I used a 1 inch steel cutting
hole saw to bore through the inlet and cat. I ruined the cutter
and still had to knock out some of the cat with chisels and
hammer. Oddly, the 400 has a restricting plate in the inlet,
whereas my 310 and 352 have the same muffler and cat but no
restriction on the inlet side. All three of them are straight
through to the front portion of the muffler now. Catless!
#Post#: 79464--------------------------------------------------
Re: CS 400 Muffler mod.
By: trail twister Date: October 30, 2017, 7:30 am
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To me one picture is worth a thousand words.
Show us what you did.
:D Al
#Post#: 79475--------------------------------------------------
Re: CS 400 Muffler mod.
By: Jaymo Date: October 30, 2017, 6:14 pm
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[quote author=Fishnuts2 link=topic=6670.msg79463#msg79463
date=1509366307]
You won't be able to cut that cat material with a spade bit for
sure as that stuff is very hard. I used a 1 inch steel cutting
hole saw to bore through the inlet and cat. I ruined the cutter
and still had to knock out some of the cat with chisels and
hammer. Oddly, the 400 has a restricting plate in the inlet,
whereas my 310 and 352 have the same muffler and cat but no
restriction on the inlet side. All three of them are straight
through to the front portion of the muffler now. Catless!
[/quote]
I suppose a carbide grit hole saw could handle it with no
problems?
What diameter hole saw?
I thought about using a hammer and a star drill to break most
of it up, and then use the hole saw.
Dunno.
#Post#: 79477--------------------------------------------------
Re: CS 400 Muffler mod.
By: Fishnuts2 Date: October 30, 2017, 8:00 pm
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[attachimg=1][attachimg=2]
First one shown is the muffler from my CS-400. Second muffler
is from a CS-310 or CS-352. Why the 400 has that restrictor
plate is beyond me. A ONE INCH hole saw fits pretty well in the
tube for the cat material, and in the case of the 400 it cut the
restrictor to line up with the rest of the tube. You should be
able to guess what part gets drilled out of the muffler from
here on out. I opened up the front deflector plate a little bit
too.
Mainly, my saws run a lot cooler now, and not much louder which
is a benefit in my opinion.
#Post#: 79479--------------------------------------------------
Re: CS 400 Muffler mod.
By: Termitebuffet Date: October 30, 2017, 8:10 pm
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I can't find a picture but im 90% sure I cut it apart cut cat
loose then ..reassemble. ..
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