A MS440 ported from the factory???
- Thread starter blsnelling
- Start date
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parrisw
Tree Freak
I don't know, but have heard it lots. Yes its quite obvious it takes fuel to make power. Think about it though, your getting dropped off on the side of a mountain, how much fuel do you think you can carry around all day?
Did ya ever watch the show Heli logging? See those small metal canisters on their waste, that's fuel and oil, but they are also running 200T's allot.
parrisw
Tree Freak
Myself I've never worried about fuel consumption, since I'm never far from my truck.
Beer Gut
A Fine Pilsner
Well have the Heli. drop off a gas can or 2 :hmm3grin2orange:
you cant always build for all out performance. you have to build the saw to suit the end user .if your a fly in logger than a mild port job thats not a big fuel user would better suit your job. if your like me and can tell my skidder operator to refill my jerry can while hes at the landing then its not a concern.
Dennis Cahoon
Addicted to ArboristSite
You clowns!.....this has been standard saw building for worksaws around my area for years. Did you even listen to what he said about the 056 piston? It doesn't suprize me a bit that this all seems "New & Kool to the chainsaw nerds here.......Hahahahahahaha!
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Have you ever shared this with AS before? Maybe that's why it's new.
Metals406
Granfodder Runningsaw
Oh, I know they're not the same, but Stihl closed port cylinders can be blended from the bottom of the factory opening to the case. The 044 jug I have here at the desk has 7.5mm of material between the bottom of the transfer to the base.
Some don't like blending that area, I've always had good luck doing it for flow. I tried something a little different on my 038 super though, by blending the bottom in a funnel shape.
Metals406
Granfodder Runningsaw
We know you're the Grand Wizard of saw building, but some people didn't pop out of the womb with a chainsaw in their hands like you.
Give people some room to learn without cutting them down dude.
Oh, and Hahahahahahahahahaha
komatsuvarna
Arboristsite MVP
Not really new, just not mentioned much I guess. Ive read and herd about it a time or 2 before. I think JJ has built a few as well. They make more of a torquey milling saw than a high winding tree dropper ,,,,so I was told anyway...........
Smittysrepair
ArboristSite Operative
Same here!
Dennis Cahoon
Addicted to ArboristSite
Yesserie Bradley!......I've mentioned in several threads about "Pop-ups" using a dome piston. Must of went right over paint tainted head.....Hahahahahaha!
parrisw
Tree Freak
I fail to see what's so special??? I've done piston swaps myself a few times, as well as talked about it here many times??? Am I missing something?
Dennis Cahoon
Addicted to ArboristSite
......maybe you should pull your head out of the womb!......you seem to be having a hard time keeping up......Hahahahahahaha!
Like I've said several times before......the 056 domed piston was used long ago for making a pop-up piston. The original reason was racing rules were limiting the use of a cut off head. So.......without removing the integral head you cut a pop-up on the dome gaining more height than a flat top. Works real good for that application when running alkie, and needing very high compression.......but!......for the regular worksaw, IMO, pop-up pistons are not needed, you can get all the compression you need for running pump gas.
Dennis Cahoon
Addicted to ArboristSite
Hi Ricky!.....Yep! I still race 4 or 5 times a year. Building bikesaws and sponsoring a few of the STS boys mostly. Tommy gave it up too.
Dennis Cahoon
Addicted to ArboristSite
Me either!......Who hasn't seen ports done like what was posted..........I think Brad is just being a hater today......Hahahahahahaha!
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