Author Topic: CS-400 Muffler Mod  (Read 4414 times)

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Offline Majorpayne

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Re: CS-400 Muffler Mod
« Reply #50 on: January 19, 2014, 01:19:59 pm »
What happened when you rev the saw?

Offline huichex

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Re: CS-400 Muffler Mod
« Reply #51 on: January 19, 2014, 07:48:00 pm »
It displayed what looks like uuuuu. Zeros without the top. And then when I pulled it away it showed  mode 360.

Offline Philbert

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Re: CS-400 Muffler Mod
« Reply #52 on: January 20, 2014, 02:04:53 pm »
Quote
Here are the updated specs for the Echo cs-400;
http://www.echo-usa.com/tomwin41/Techdata/cs-400.pdf

Sharkey,

That link gives me pages 1-5 (page 6 is blank) of the service supplement, but the title page, references up to page 9.  Anyway to get the rest of this, or the complete service manual?

Thanks.

Philbert

Offline brokenbudget

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Re: CS-400 Muffler Mod
« Reply #53 on: March 18, 2014, 06:11:17 pm »
this is how I do a muffler up for these. this is for the black painted brazed together mufflers.
self explanatory. I use a thin cutter in a dremmel.


depending if the assembler was sloppy with the braze, the front of the muffler might be stuck here. you'll need to work it loose carefully without bending it.


this muffler is pretty bronze free. 2 ways to get rid of the cat. get rid of this tack weld and remove the whole can--if it isn't also sealed down with bronze. it should pry out pretty easy.


or if it is stuck, I cut the top off the can and use a spade bit to remove the cat material. then clean up with a die grinder bit.
either way, I have found no difference in performance between these 2 ways.


then I open the whole hole ;D


I have found no reason to go bigger than the stock sized opening. the only thing I do is remove the louvers.


and only open the deflector up a bit. anything else is just getting loud.




i'll leave it up to the individual on how to reattach the 2 parts. weld, braze or silver solder works. not jb weld ;)
when I grow up, i wanna be an adult.

Offline 660magnum

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Re: CS-400 Muffler Mod
« Reply #54 on: March 18, 2014, 06:50:08 pm »
One of the biggest positives about getting rid of the catalytic part of the muffler is that most of the catalytic reactors and especially the honey comb ones are very heavy.

Also as the exhaust gases have to pass through the catalytic part and it has to get hot to react, it is rather restrictive. I don't like the heat from them either.
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Offline Philbert

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Re: CS-400 Muffler Mod
« Reply #55 on: March 18, 2014, 08:03:44 pm »
Thanks for the clear photos.

Philbert

Offline brokenbudget

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Re: CS-400 Muffler Mod
« Reply #56 on: March 19, 2014, 07:05:28 am »
One of the biggest positives about getting rid of the catalytic part of the muffler is that most of the catalytic reactors and especially the honey comb ones are very heavy.

Also as the exhaust gases have to pass through the catalytic part and it has to get hot to react, it is rather restrictive. I don't like the heat from them either.

I get a lot of people that "don't want the extra power".  :) their response changes when I mention it gets rid of heat better. their response changes even further when they run their muffler modded saw 8) then they come back with more saws to mod ;D
when I grow up, i wanna be an adult.

Offline leec

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Re: CS-400 Muffler Mod
« Reply #57 on: June 05, 2014, 08:30:03 pm »
You will probably have to remove the plastic limiters.  Some folk use a drywall screw.  These limiters are demanded by the EPA and in the US it is an offence (I'm told) to remove them but many do.  You can put them back once you get a good tune however so it will look stock.

Lee  ;)

Offline stubnail67

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Re: CS-400 Muffler Mod
« Reply #58 on: August 12, 2014, 11:41:26 pm »
M-Payne.... you ever own a top handle pps23????

 

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