DP Muffler Cover

Here's the one I bought today, I had searched all over this forum for a good pic of one with no luck so I thought I'd post a pic. I had to order it on "blind faith" from everyone's recommendation.

Part #1128 140 0801 for $26.81 plus tax. No hurry to install it, I've put 4 tanks of gas through the 440 now and it's Stihl freakin' me out every time it lights into a log, I'm not quite ready to make it any meaner.

Left side view


Head on

thanks for the pics

can't wait for mine

how much of a retune did you have to do?

forestryworks said:

how much of a retune did you have to do?

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LazyJ said:

No hurry to install it, I've put 4 tanks of gas through the 440 now and it's Stihl freakin' me out every time it lights into a log, I'm not quite ready to make it any meaner.

Click to expand...

He hasn't put it on yet.

Ian

Will this fit an 044?

My buddy has been looking to get one. His dealer says they dont make one for the 044. :monkey:

To take full advantage of the 440's power (short of doing a full woods mod), you should enlarge the factory port as much as is easily possible (keep it round, maybe 9/16th id) and enlarge the cover port by about 1/3. You'll prolly need a tool to remove and replace the limiter tabs, after retuning the carb.

rbtree said:

To take full advantage of the 440's power (short of doing a full woods mod), you should enlarge the factory port as much as is easily possible (keep it round, maybe 9/16th id) and enlarge the cover port by about 1/3. You'll prolly need a tool to remove and replace the limiter tabs, after retuning the carb.

Click to expand...

+1

LazyJ said:

Here's the one I bought today, I had searched all over this forum for a good pic of one with no luck so I thought I'd post a pic. I had to order it on "blind faith" from everyone's recommendation.

Part #1128 140 0801 for $26.81 plus tax. No hurry to install it, I've put 4 tanks of gas through the 440 now and it's Stihl freakin' me out every time it lights into a log, I'm not quite ready to make it any meaner.

Left side view

Head on

Click to expand...

Awesome! Great price too! Go ahead and put it on but make sure to retune the carb before cutting again.

Is there a cover like that for a Stihl 036? This was my dad's saw and I know it is an older model Do the older Stihls do better with these DP mufflers?

From what I understand, the older saws don't benefit as much from a muffler mod because the EPA hadn't gotten around to strangling them yet. I don't know when that cutoff would be. I'm pretty sure that the dual port covers are only factory options for the 066/660 and 044/440. I think but am not certain that those covers originally came on 044 and 066 and just happen to also fit the newer 440 and 660. I'm sure someone will correct me in short order if I'm mistaken.

Ian

Edit: I just looked up the 036 at acres place and it was first introduced in 93 so it would benefit from a muffler mod but I don't think Stihl offers a bolt-on solution. If you or a friend are handy with a welder, this is a good way to do it, courtesy of Lakeside 53. Use a 1/2" bolt spacer for the tube, you can get it from any good hardware store.

I just checked and there is a DP cover pictured in the IPL for an 034 but there is no part included. So I guess doing it yourself is the easiest method for moding a 036/360 muffler.

Haywire Haywood said:

He hasn't put it on yet.

Ian

Click to expand...

blah, that's what i get for not reading thoroughly

LazyJ said:

Here's the one I bought today, I had searched all over this forum for a good pic of one with no luck so I thought I'd post a pic. I had to order it on "blind faith" from everyone's recommendation.

Part #1128 140 0801 for $26.81 plus tax. No hurry to install it, I've put 4 tanks of gas through the 440 now and it's Stihl freakin' me out every time it lights into a log, I'm not quite ready to make it any meaner.

Click to expand...

You got a good price on DP cover, $35 for 440/460 DP and $45 for 066/660
DP cover here.

What I was "planning" was to leave the stock port alone and make the slot on the cover about twice the size, wouldn't that be about right?