Author Topic: CS 400 Muffler mod.  (Read 730 times)

0 Members and 52 Guests are viewing this topic.

Offline trail twister

  • 5 cube
  • ***
  • Posts: 107
  • Karma: 18

  • Total Badges: 18
    Badges: (View All)
    Fourth year Anniversary 100 Posts Level 4 Third year Anniversary Second year Anniversary One year Anniversary
CS 400 Muffler mod.
« on: October 25, 2017, 07:47:05 am »
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

Share on Facebook Share on Twitter


Offline Cut4fun .

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 23708
  • Karma: 664
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair

  • Total Badges: 53
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 8 Apple User Eighth year Anniversary 20000 Posts
Re: CS 400 Muffler mod.
« Reply #1 on: October 25, 2017, 09:47:47 am »

Offline Termitebuffet

  • 4 cube
  • **
  • Posts: 38
  • Karma: 7

  • Total Badges: 11
    Badges: (View All)
    Linux User Combination Level 2 Level 1 First Post Karma
Re: CS 400 Muffler mod.
« Reply #2 on: October 26, 2017, 08:49:19 pm »
I ain't got no pics , but the cat has to come out ...

Sent from my SM-N910V using Tapatalk


Offline mountainlake

  • 5 cube
  • ***
  • Posts: 119
  • Karma: 21

  • Total Badges: 21
    Badges: (View All)
    Level 5 Sixth year Anniversary Fifth year Anniversary 100 Posts Fourth year Anniversary Level 4
Re: CS 400 Muffler mod.
« Reply #3 on: October 27, 2017, 05:31:38 am »
 
,  Same here, get rid of the cat and open up the exit.  Steve

Offline Jaymo

  • 4 cube
  • **
  • Posts: 26
  • Karma: 4

  • Total Badges: 11
    Badges: (View All)
    Level 3 Karma Good 10 Posts Karma Level 2 Combination
Re: CS 400 Muffler mod.
« Reply #4 on: October 29, 2017, 03:16:37 pm »
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?

Offline Fishnuts2

  • 4 cube
  • **
  • Posts: 57
  • Karma: 15

  • Total Badges: 24
    Badges: (View All)
    Sixth year Anniversary Fifth year Anniversary 50 Posts Level 5 Fourth year Anniversary Third year Anniversary
Re: CS 400 Muffler mod.
« Reply #5 on: October 30, 2017, 08:25:07 am »
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!

Offline trail twister

  • 5 cube
  • ***
  • Posts: 107
  • Karma: 18

  • Total Badges: 18
    Badges: (View All)
    Fourth year Anniversary 100 Posts Level 4 Third year Anniversary Second year Anniversary One year Anniversary
Re: CS 400 Muffler mod.
« Reply #6 on: October 30, 2017, 08:30:53 am »
To me one picture is worth a thousand words.

Show us what you did.


:D  Al
Like Like x 2 View List

Offline Jaymo

  • 4 cube
  • **
  • Posts: 26
  • Karma: 4

  • Total Badges: 11
    Badges: (View All)
    Level 3 Karma Good 10 Posts Karma Level 2 Combination
Re: CS 400 Muffler mod.
« Reply #7 on: October 30, 2017, 07:14:57 pm »
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!

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.

Offline Fishnuts2

  • 4 cube
  • **
  • Posts: 57
  • Karma: 15

  • Total Badges: 24
    Badges: (View All)
    Sixth year Anniversary Fifth year Anniversary 50 Posts Level 5 Fourth year Anniversary Third year Anniversary
Re: CS 400 Muffler mod.
« Reply #8 on: October 30, 2017, 09:00:02 pm »
[ Guests cannot view attachments ] [ Guests cannot view attachments ]

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.

Offline Termitebuffet

  • 4 cube
  • **
  • Posts: 38
  • Karma: 7

  • Total Badges: 11
    Badges: (View All)
    Linux User Combination Level 2 Level 1 First Post Karma
Re: CS 400 Muffler mod.
« Reply #9 on: October 30, 2017, 09:10:55 pm »
I can't find a picture but im 90% sure I cut it apart cut cat loose then ..reassemble. ..

Sent from my SM-N910V using Tapatalk


 

Related Topics

  Subject / Started by Replies Last post
4 Replies
975 Views
Last post June 18, 2012, 10:26:24 pm
by Stihlboy
25 Replies
2004 Views
Last post September 24, 2022, 12:02:25 pm
by 3000 FPS
Muffler

Started by jmester Stihl

3 Replies
631 Views
Last post January 15, 2013, 08:05:01 pm
by jmester
7 Replies
795 Views
Last post January 24, 2013, 04:51:40 am
by brokenbudget
372 muffler

Started by DCC « 1 2 » Husqvarna

16 Replies
1187 Views
Last post November 01, 2013, 09:06:03 pm
by mdavlee .
9 Replies
4489 Views
Last post October 23, 2013, 09:18:26 pm
by Cut4fun .
CS-400 Muffler Mod

Started by huichex « 1 2 ... 5 6 » Echo

58 Replies
7449 Views
Last post August 12, 2014, 11:41:26 pm
by stubnail67
7 Replies
1037 Views
Last post March 02, 2014, 11:21:33 pm
by Bobby Charles
7 Replies
1039 Views
Last post August 24, 2014, 09:54:39 am
by JohnG28
0 Replies
260 Views
Last post June 12, 2014, 05:14:39 pm
by Old Iron Logging