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Do a little sniffing around on the search feature and you find nothing but great things about Ken Dunn. I have spoke with him and he is a great guy to deal with.
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Do a little sniffing around on the search feature and you find nothing but great things about Ken Dunn. I have spoke with him and he is a great guy to deal with.
Thanks for the help RAHTREELIMBS
I have done a bunch of searching around and there seems to be enough information on the forum to build a woods modified saw, if you have any mechanical skills at all. There must be 50 people who have modified there own mufflers with gain. Porting a cylinder can't be much harder than doing a muffler. Paying someone $300 to $500 to port your cylinder and gut a muffler is way to much for me.
I have done a bunch of searching around and there seems to be enough information on the forum to build a woods modified saw, if you have any mechanical skills at all. There must be 50 people who have modified there own mufflers with gain. Porting a cylinder can't be much harder than doing a muffler. Paying someone $300 to $500 to port your cylinder and gut a muffler is way to much for me.
There are some real challenges to porting a saw. You can't just dive in there with a die grinder until you do some research on port timing, cylinder pressures and temps, and proper carburetion. Once you do the legwork though, it gets pretty easy. The basic thing you're doing is accentuating and improving the manufacturer's basic design, unless you're looking to race the saw.
Crofter
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Teacher;
Right on the muffler mods but I think the assumption on porting is off! If you were a dentist or a tool and die maker with access to a small angle head grinder and burrs, it might be a different story. "Tis said that experience is the best teacher; it is also the most expensive! Maybe you are lucky, so give it a shot!
sedanman
Just cut the piano!!
If you think education is expensive........TRY IGNORANCE!
Thanks for the encouraging words Jacob J. and Crofter
When you study up and learn where to put your port heights and develop the skills to use a grinding tool it should be a piece of cake to build a woods modified saw. This ain't rocket science, or is it Sedanman?
When you study up and learn where to put your port heights and develop the skills to use a grinding tool it should be a piece of cake to build a woods modified saw. This ain't rocket science, or is it Sedanman?
sedanman
Just cut the piano!!
Teacher, My statement was a general one, if you thought it was directed at you, you were wrong. So you are a hotshot saw builder? You can't see paying soemone a few hundred to hop up a saw? Can I send you one and have you do it for free? Just so you know the last few comments WERE directed at you and were not general statements, I hope this clears up any confusion you may have. Judjing by what you chose as your opening post you have either been lurking for a very long time or have been banned under another user name. If you are truly new then welcome. If you are a re-tread then we'll see how long it takes before history repeats itself. Now it's your turn to send one across my bow.
Crofter
Addicted to ArboristSite
Teacher, I have a feeling you might be trying to stir the pot! Wait till Rocky gets onto you! Lol!
Frank
Don't say "sickem, if you're only foolin"
Frank
Don't say "sickem, if you're only foolin"
Crofter
Addicted to ArboristSite
Oh, I see sedanman got there before Rocky. I think we have been here before.
Frank
Frank
Al Smith
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Porting
Just a little note on this subject.Last winter,I resleeved a McCulloch super pro 125.I had to recut the ports in the liner,as a result of the rebuild.These were only slightly different from the stock specs,a little better flowing,polished etc.This procees took me about 8 hrs.It is very tedious and time consuming.It is my opinion that these saw builders,more than earn their money.
Just a little note on this subject.Last winter,I resleeved a McCulloch super pro 125.I had to recut the ports in the liner,as a result of the rebuild.These were only slightly different from the stock specs,a little better flowing,polished etc.This procees took me about 8 hrs.It is very tedious and time consuming.It is my opinion that these saw builders,more than earn their money.
Kneejerk Bombas
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I forget who I was talking to about one of the builders here, anyway, he said this guy spends 8 or 10 hours working on a saw.
So for his $250 or whatever, he takes responsibility for your saw, takes it apart, works it over, installs new gaskets, opens up the carb jets and muffler, reassmebles, tunes, tests, and guarantees the work.
Remember too that each time he does this he gets better. Different timing numbers, port shapes, and other stuff will get better and better each time he does a saw and tests it to see the outcome of slight changes.
So you can try to do it yourself, but will it be near as good as having a pro do it? No way.
So for his $250 or whatever, he takes responsibility for your saw, takes it apart, works it over, installs new gaskets, opens up the carb jets and muffler, reassmebles, tunes, tests, and guarantees the work.
Remember too that each time he does this he gets better. Different timing numbers, port shapes, and other stuff will get better and better each time he does a saw and tests it to see the outcome of slight changes.
So you can try to do it yourself, but will it be near as good as having a pro do it? No way.
Does anyone do there own saw work? I personally like doing the maintenance, and it does save me time and money. If I had to take my chains to the shop everytime I dulled one I'd never get anything done. I have learned how to sharpen a chain an gut a muffler, so I think I can learn how to make a saw run better. Isn't this why you have a forum, to help with problems and to learn all about your equipment?
MasterBlaster
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You couldn't be more wrong on that statement!!!
Take the time and phone some of the resident saw buiders. You will find that there is a lot more to thatn one might think.
Understand that I am not trying to discourage you or anyone from porting a saw. I did some port work on two of my own saws last winter. I bent the ear of Ken Dunn and Dan Henry numerous times before I dove in. I didn't do near the work that they do but I did get some improvement in the saws that I am more than content with!
Teacherman-
I did my first porting job on a saw ( Stihl 066 ) by taking a cylinder off of a Walker's saw shop 066 and measuring their port timing.
An old motorcycle mechanic friend of mine showed me how to use a degree wheel, clearance gauge, and a graduated cylinder for measuring combustion chamber cc's.
I learned how to dress ports and which tools were best to use from Macdizzy's site - http://www.macdizzy.com
I didn't have the advantage some people did of being able to call Ken Dunn or Ed Heard on the phone and getting advice, so I started practicing porting on old blown up cylinders. That way if I screwed one up, it was junk anyways.
I thoroughly believe that every saw owner/operator should be able to at least rebuild a carburetor or diagnose an ignition problem, that way you can protect yourself against crooked and/or lazy saw shop mechanics.
I did my first porting job on a saw ( Stihl 066 ) by taking a cylinder off of a Walker's saw shop 066 and measuring their port timing.
An old motorcycle mechanic friend of mine showed me how to use a degree wheel, clearance gauge, and a graduated cylinder for measuring combustion chamber cc's.
I learned how to dress ports and which tools were best to use from Macdizzy's site - http://www.macdizzy.com
I didn't have the advantage some people did of being able to call Ken Dunn or Ed Heard on the phone and getting advice, so I started practicing porting on old blown up cylinders. That way if I screwed one up, it was junk anyways.
I thoroughly believe that every saw owner/operator should be able to at least rebuild a carburetor or diagnose an ignition problem, that way you can protect yourself against crooked and/or lazy saw shop mechanics.
Al Smith
Addicted to ArboristSite
Porting
Ditto on Macdizzy.I got my porting info from an old buddy of mine,who was a world class kart racer during the 70,s.He had about a dozen Mac 101 engines,all ported for different conditions.He always stressed that more can be gained on the exhaust,than any other mods.I don't consider myself an expert.What little I know is confined to reed valve engines of the basic McCulloch design.I would not have a clue as to where to even begin on a piston ported engine.As far as modding an 088,they are real robust in the stock form.A little bit of muffler work,would go a long way.
Ditto on Macdizzy.I got my porting info from an old buddy of mine,who was a world class kart racer during the 70,s.He had about a dozen Mac 101 engines,all ported for different conditions.He always stressed that more can be gained on the exhaust,than any other mods.I don't consider myself an expert.What little I know is confined to reed valve engines of the basic McCulloch design.I would not have a clue as to where to even begin on a piston ported engine.As far as modding an 088,they are real robust in the stock form.A little bit of muffler work,would go a long way.
