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Woods porting

Started by Timbercruiser, May 13, 2012, 01:33:54 PM

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Timbercruiser

Sorry im new to all this but I see alot of guys talking about ''Woods porting" or porting there saws. I just bought a new stihl 362 pro saw and wondered if I can do anthing to make it breath and have more power. Any info will be a big help thanks

NCFarmboy

A muffler mod is the easiest and cheapest hp increase you can do.  Most are severly restricted.  It is like putting a set of headers on the old hot rods.  On your saw it will run cooler and make more power.  Will need to retune carb after modding the muffler.  The warranty will be voided if muff. is modded.  Some buy an extra muff. to put back on saw in case of warranty claim.  However, with a MM it will run cooler so it shouldn't be an issue.
Shep
Lots & Lots of Saws

John Mc

If you are not up to doing a muffler mod yourself, often just swapping in a non-catalytic muffler will help it breathe better and run noticeably cooler (assuming it came with a catalytic one). Just as with a muffler mod, you'll need to re-tune after the swap.
If the only tool you have is a hammer, you tend to see every problem as a nail.   - Abraham Maslow

Timbercruiser

What do I do to my stock muffler to make it run better. I see stihl puts some type of fancy lock nuts on to make it hard to open up

John Mc

There are others on here who know a LOT more about this than I do, but the basic idea is opening up the exhaust outlet in the muffler a bit (a drill or dremel tool can work wonders here). If the muffler has a lot of internal restrictions, you may want to remove or modify them as well. NOTE: some catalytic mufflers have some nasty metals inside that you do NOT want to inhale. Take appropriate precautions if you are working on one of them.

Try searching on   muffler mod   for more information.
If the only tool you have is a hammer, you tend to see every problem as a nail.   - Abraham Maslow

AdkStihl

I know of a few guys on another forum who would love to give your 362 a massage :D If youre interested just send me PM and I'll head ya in the right direction.
Most saw builders/porters typically charge $250-300 depending on what type of performance youre looking for. Price usually includes shipping back to you.
J.Miller Photography

SwampDonkey

On our Stihl FS550's (57 cc brush saw) we take the finer mesh screen out. It plugs solid in the first day of use. Anyone that says otherwise has never run one a straight 8 hr day. ;) So we put in a courser screen, never touch it again, except daily air filter cleaning.  :)
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

Al_Smith

 :D Now how pray tell would 98 percent of us know about a brush saw Swamp ? You and half a dozen people on the planet are the only people that operate the things .

Al_Smith

Brush saws aside generally speaking a little work on the muffler and obviously retuning the carb will satisfy most saw users .

Now of course they make a big deal about "woods porting" and choose up sides on internet forums and all the hullabaloo over little of nothing .Then brag up the builder --until they get out ran by a stock saw at some saw GTG then the guy goes from hero to zero .

It's just much nonsense on forums ,nothing more .Believe what you want though ,it's still somewhat of a free country . ;)

SwampDonkey

Al, by the sounds of it they've been reading too many posts over there from Tobiquers. If they say they cut 5 acres a week, you can divide that by 2 and come out about right. I didn't make that up as I have had 4 working for me at once, so I know.  :D 8)
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

Al_Smith

Not me ,you must have someone else in mind .Like I've said a million times I've never even seen a brush saw  let alone read up on one .

Fact you are my only source of information about one .I have no idea who this Tobiquers is or  where over there is .

Where is over there ? Is that the same as over yonder ?

SwampDonkey

No, not you. You need to read more carefully. As far as over there, everyone is always talking about some other forum, so it's over there. ;D

A Tobiquer, an inhabitant of a small region of NB along the Tobique River. Well known for stretching the truth. ;)
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

AdkStihl

Quote from: SwampDonkey on May 15, 2012, 05:00:14 AM
On our Stihl FS550's (57 cc brush saw) we take the finer mesh screen out. It plugs solid in the first day of use. Anyone that says otherwise has never run one a straight 8 hr day. ;) So we put in a courser screen, never touch it again, except daily air filter cleaning.  :)

Plugs solid in a day?? That aint right. What are you running for mix?
Outboard/Marine mix @ 16:1  ???  Holy shart.
The FS550 is pretty much a glorified weedwacker with a skil saw blade.
Brush hogs are much more efficient ;D
J.Miller Photography

SwampDonkey

I'd like to put some of you bush hoggers on a tractor in the ground I thin. Won't be much left of tractor or bush hog in short order.  :D :D Brush saws are for thinning, hogs are for mowing. :D You've obviously never ran a 550. ;)
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

AdkStihl

Quote from: SwampDonkey on May 17, 2012, 06:00:41 AM
I'd like to put some of you bush hoggers on a tractor in the ground I thin. Won't be much left of tractor or bush hog in short order.  :D :D Brush saws are for thinning, hogs are for mowing. :D You've obviously never ran a 550. ;)

Youre right. Cant say I have. But then again, never felt the need for one either.
Whats up with your screens plugging in a 8 hour day? I just picked up another 10mm 044 very low hour saw with screen still intact and not a sign of any carbon constriction whatsoever.
J.Miller Photography

SwampDonkey

Brush saws are a different beast. Even the Husqvarna brush saws get a muffler modification before use or they do the same thing.  These saws are much higher sped as well. ;)

The need we have is that thousands of acres need thinned each year to keep up on the silviculture. It would be nice to sit it out in a cabbed machine, and they have experimented with this, but it's never worked and very poor results. They even used them to make trails, but instead of making trails in the thickets they go in the light places. Then the trails, no matter where they are, are full of spears to fall down and poke a lung or but cheek on. ::) No dice to that.
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

Tramp Bushler

Back to the original ? . Porting a saw does help most of the time . But hands down the most important modification there is is a truely sharp , properly jointed well oiled chain in a good straight well maintained bar .

Until youve cut with a properly chisel ground or filed chain , you really don't understand the difference .

As has been said here . A dual ported ,muffler on a saw with a properly adjusted carb does bump up the proformance like 5% . A perfectly chisel ground chain will bump the preformance 25-30% .
.
If your not wearing your hard hat when you need it. Well.

Tramp Bushler

 A Silvey SwingArm grinder from Madsen's costs about the same as a new 362 Stihl . But if you take care of it , it will last 25 years or more and grind litterly miles of chain .
No round grinder can compare to a chisel grinder so please lets not even go there .

In the long run a chisel grinder is no more than and can be less expensive than round fileing .
.
If your not wearing your hard hat when you need it. Well.

lumberjack48

I knew loggers that logged all their life, they had no idea how to sharpen a chain properly. When they wanted to cut faster, they'd buy a bigger saw an cut the rakers lower.

Its just like a grinder, its only as good as its operator.

I've heard so many guys say, i wish that my saw cut as good as it did when it was new. Just by that statement i knew they don't know how to tune or file a saw.
I had a 444SE/SG Husqvarna, this was a factory ported 44, that i'd bought just to cut plantation Jack Pine with. It sounded like a model airplane, i cut & limbed 200 Jack an Norway trees a day with it. I would fall about a 6" Jack, while it was falling i'd cut 3, 4 pieces out of it in mid air. it was fun to run.



 
Third generation logger, owner operator, 30 yrs felling experience with pole skidder. I got my neck broke back in 89, left me a quad. The wife kept the job going up to 96.

Al_Smith

Quote from: lumberjack48 on May 27, 2012, 05:54:32 PM
  ,   I would fall about a 6" Jack, while it was falling i'd cut 3, 4 pieces out of it in mid air. it was fun to run.

]
Say what you cut up pecker poles like a Japanese chef with a ginsu knife .In mid air no less ? :)

lumberjack48

You got it Al, the throttle response was unbelievable. Have you ever had one, or worked on one ? 
Third generation logger, owner operator, 30 yrs felling experience with pole skidder. I got my neck broke back in 89, left me a quad. The wife kept the job going up to 96.

Al_Smith

---or even seen or heard of one ,no .

SwampDonkey

I do that by times with a brush saw to get it down. Remember, we aren't creating 1/4 acre sized holes when thinning and aspen is about the worst tree to hang up as is beech.
"No amount of belief makes something a fact." James Randi

1 Thessalonians 5:21

2020 Polaris Ranger 570 to forward firewood, Husqvarna 555 XT Pro, Stihl FS560 clearing saw and continuously thinning my ground, on the side. Grow them trees. (((o)))

Full Chisel

I first got my MS362 the March before last. Upon goin' in the woods, I thought I'd been had. I thought it was lockin' in the cuts and running out of power way too easy. Thru several tankfuls of fuel, she continued to wake up. It got to whistling like it should. I've heard many accounts of this. Break the saw in thoroughly, then ask yourself again if you want to drill out the muffler or have it ported. In a 60cc saw I don't see how you'll need more than what a stock 362 puts out.

I'm in with the sharp chain crowd with depth gauge clearance tuned to powerhead/bar length.
Jed: Jethro, how's come they ain't no ice in Kali Forni-a?

Jethro: Don't look at me Uncle Jed. I didn't take it.

beenthere

Full Chisel
Welcome to the forum.
I agree with your experience, and had similar questions running through my mind with my new MS361 ('04). After a few tanks, it gained speed in the cut as well as I gained the experience with the saw. Very happy with the product and performance since. Good on the sharp chain and tuned rakers.

Welcome aboard.
south central Wisconsin
It may be that my sole purpose in life is simply to serve as a warning to others

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