How many of you are running ported saws

Will you guys stop reminding me of one of my dumbest moves ever. Selling off those 2 monster Dolmars.
 
Stihl Crazy said:
Will you guys stop reminding me of one of my dumbest moves ever. Selling off those 2 monster Dolmars.
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Were fun while they lasted Art and they are in real good hands now along with the 2 Wiseco 166 pistons I bought for them. She wasnt the fastest, but she was fun to run.
The MVP166 got a couple of 3rds this year behind 2 Bertrand saws 3120 880. IMO thats doing pretty good for the saw and operator.

Oh the guy has a 166 with a 090 top end now too and another build going. So he I gave him all my 166 dolmar parts when he bought the 2 166. I wanted as far away from 166 stuff as I could. Hard to find the simplest parts.

Running her real fat after a rebuild I did. First test runs.

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I had the opportunity one night to race Simon Bertrand with the old 166. Of course he won, but not buy much as one would think. Modern Bertrand 3120 vs 20 plus year old MVP 166. I had fun for sure.
 
I even loaned the 166 to Al to run at Chardon and here is his first try at a cold start.

This was with the bar and chain that came with it. 3rd cut looked good. When I got done with her Art I had it cutting 60's in 8x8. It just kept getting stronger after the rebuild.

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Hey Guys: Seriously.......... Thanks tons (of course I recognize that it hasn't all been for my benefit!) for the heaps of advice, and it'll all be duly taken to heart. I'm actually finally getting excited about getting off my dead ass and trying to do something.
 
MasterBlaster said:
I'd love to have a modded, hand held blower. Get it to perform like a backpack blower.

Hell yea! My neighbors would shat!
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I live in the sticks, no close neighbors. If I did I guess I would have a problem. I fix saws here at my place and they are running at some strange times. :)
 
There no reason you couldn't soup up a blower ..Probabley the first thing to do would be to put more carb on them as they are usually pretty small .I have an idea though it wouldn't be hard to wring one out because air moving equipment really takes the power .Moving air is a constant load where as a saw isn't under full load at all times
 
Al Smith said:
Well it definately snagged something by the looks of things .Also that ex port could have stood a little rework ,kinda rough .

No big deal but just to point out it doesn't take much obstruction to put a damper in things .
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Actually that saw was ported by an extremely well known builder that I'm sure you'd have heard of :) Nothing wrong with the finish on that port. You're probably used to seeing mirror like finishes on Timberwolf's saws.
 
MCW said:
Actually that saw was ported by an extremely well known builder that I'm sure you'd have heard of :) Nothing wrong with the finish on that port. You're probably used to seeing mirror like finishes on Timberwolf's saws.
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TW isn't to only one that shines them like a mirror .;)
 
I shine em both up but not to the extent I once did .It seems you can get a certain effect when the gas/air mixture goes over an extremely polished surface that actually hinders the desired effect .From what I've read it appears the fuel gets liquidized instead of staying in suspension within the fuel atomized mixture .Now of course this could be debated like everything else .At any rate now of days I shine it up with craytex and pretty much let it go at that .
Now that said though I certainly don't leave big old mold seam marks in the casting or port edges rough as a cob . Anyone who fancies him or her self an engine builder and does that is either uneducated in that elementry practice or is just plane lazy .That's just my 2 cents worth on that matter .If you're going to do ,do it right .:)
 
Al Smith said:
TW isn't to only one that shines them like a mirror .;)
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Although it looks good and does show the builder has taken that bit of extra care I'm not sure a mirror like finish actually provides any great benefit. I remember reading something written by someone a lot smarter than me that he called the "golf ball effect". Having a mirror finish can actually create more drag, hence the dimples in a golf ball. Not that you want dimples in a port, but you get the point he was trying to make.
 
I think they call it the skin effect .

Since you mentioned the golf ball ,the Stihl 038 AV had a dimpled intake .It also had an offset combustion chamber and a roundish hemi domed piston .Evidently they must have changed their minds because the mags had smooth intake ,flat top piston and a center chamber .

When I pepped up my Av I removed the dimples and craytexed it smooth for a final finish,shiny ,sort of but not like a mirror .Must have worked ,the thing runs just fine .
 
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