More Power

[steeltree]

does any body know how to get more power out of my ms290?
some body said drillin a hole in the carb, any sugestions

 

[steeltree]

sorry drillin a hole in the muffler!

 

[stihltech]

290

Start with the basics. Tune it up( plug, fuel filter, clean fuel, clean air filter). SHARP chain, bar dressed. Full chisel chain.

Now you go a little further.

Muffler. You need to get the interior baffle out. This will require a lot of patience and a dremel tool, or cutting the muffler in two. Matche the exhaust port, gasket, and muffler inlet. Open the muffler outlet to twice its present size.

Remove the carb. Set the metering lever to the proper height, also make sure diapragms are in good shape and screen is clean.
Remove the limiter caps. Reset for power in the cut. REPLACE the caps.

OR

Send to one the resident saw tuners on the board.

 

[StIhL MaGnUm]

One way to get more power from that saw is too send it to one of the many saw builders here on the site I'm sure they can help you out with your power problems...

Later Rob..

 

[Tony Snyder]

Just trade it on a 2159 Jonsered.

 

[woodsjunkie]

Tony,
Rite on track the I totally agree 2159 are a really good around saw, With a great price

 

[Tony Snyder]

You got the wrong orange saw. In the case of a Stihl, its probably more practical to just shoot the holes in it. Then you can go get a Jonsered, or a Solo.

 

[Tlucher]

I'm trying to do the muffler clean out on my 029. So far I've opened up the cover over the spark arrestor some and drilled 2 1/2" holes under the screen. This seemed to help some but I had also put on a new bar and chain before testing. This is a $180 Ebay saw. So if I start to grind out the baffles inside the muffler, how much needs to be removed? Cutting the muffler apart isn't an option or trading it for another brand either.

Thanks
Thomas

 

[Ryan Willock]

the BEST way to get more power out of an 029 is to trade it or just buy a new 036 or 044

 

[don]

onery bunch of users

Exhaust port should be equal to or less than 125% of the head exhaust port.

And yes, remove the internal dampener

 

[glens]

The 029/MS290 is a fine saw.

Don, although I would probably stop well short of the smallest one of the three figures, and am by no means making a recommendation, I wonder to which of these methods of computing the area that 125% figure relates:<ol><li> height &times; width of exhaust port measured on the flat plane of the chord of the cylinder diameter<li> height &times; width of exhaust port measured on the curved plane of the cylinder diameter<li> height &times; width of exhaust port at muffler interface</ol>Glen

 

[don]

okay.

I would probably stop well short of the smallest one of the three figures

check your math!

Picked up the 125% thumrule from several discussions on this site.

It is seems easier to open the saw up more than trying to put some metal back.

 

[bwalker]

Glens, I used #1 with good results. The exhaust ports chordal width is quit abit smaller than the exhuast ports outlet.

 

[Gypo Logger]

I called Dennis today and asked him for the proper figures to put in my 025.
This was the formulae he have me, and I quote.
Exhaust height x cubic displacement
------------------------------------- 2
barlength X # of beverages consumed/day

I tried this out and my 025 really gets up and talks

 

[Gypo Logger]

I called Dennis today and asked him for the proper figures to put in my 025.
This was the formulae he have me, and I quote.
Exhaust height x cubic displacement
------------------------------------- 2
barlength X # of beverages consumed/day

I tried this out and my 025 really gets up and talks.
Thanks Dennis,
Gypo

 

[Gypo Logger]

Huh, I stopped the upload of the post to sign and I got two for the price of one.
Red Green

 

[Dennis]

Gypo, you forgot to include the other two variables...size of beverage and beverages spilled while typing.