Discussion in 'Chainsaw' started by pioneerguy600, Nov 28, 2009.
Anyone tried porting an 090, the 137cc size?
Just curious why would any one want to port a saw that big. Would love to have one though.
Why not,I have ported every other saw I run as production saws from 60 cc up to 100cc, the 090`s are only 37cc bigger. I think they should also benifit from a woods porting job.
I like it!!! will watch this thread and see where it goes.. I have been bitten by a restoration bug and its bad..I want to start collecting and doing complete restorations on the old big saws. I know its an up hill battle to find parts but I think they are just so cool. The 090, lighting; and 07 are top of my page:greenchainsaw:
Well I now have a couple of 090`s and I think its high time to port at least one of them. I have ported most of the other 45 or so saws that I use for woodcutting on a fairly spaced rotation but they are from 100cc `s on down. Its time to port a big dog.
AAHHH.....to walk where few, if any, have traveled before
Will be wathching this one.
At one time I seen some pics of the 10 cube(159cc) 090, had some wild things going on in there, so I'm sure it would mod just fine
God didnt build it,go for it.
Oh Boy!! Where can I get one of those???
Good luck from my understanding there wan't that many made, I guess they were more for carts. I guess Andres Stihl's grandson was into carting so they made a handful of them to hand out to the carting community but didn't follow through with it after no one that recieved them gave any feedback... Thats the story I read
The problem with porting an 090 is that there's so much rotational mass that it's unsafe at any higher RPM. They even have governors to prevent overspeeding when out of the cut at their stock specs. I'm with everyone else here - I'd love to see it done. But as for the longevity, or more importantly safety, I can't really speak to that.
Well since there were only something like 10 or 12 made, your options are pretty slim... You could come out to Washington and try to rob Wayne Sutton of his, or I think rupedogg here out in California has one too. Here's a picture of Wayne's that I saved to my computer a long time ago, hope he doesn't mind me passing it on:
Notice how the decompression button is in a different location, slightly closer to the spark plug than on a regular 090. It's very possible that's about the most valuable saw there is - not only is it exceedingly rare, it's also in excellent condition. Also, these 10ci saws had removable heads. I used to have a picture of that somewhere too but I can't find it right now.
I took Wayne's saw apart last summer. There are more pics around here somewere. search 10 cube.
I have a modified jug here but not sure what they did to it. Jacob should drop by on this and he might now what was done.
Ports are awful big already. I quess if you want to go :angry2:reeeeel fast you just unhook the governator.
comp release is in same location but the 090 uses a springy arm and off sets
the button. The 10 cube button pushes straight down.
72mm piston with "dykes" ring
070 and 090 jugs
Thats quite a set of jugs there Saw Bones, the 72cc with the finger ports is a large cylinder for a chainsaw but I would try one in a heartbeat, the bigger the better I say. Too bad they are so rare but then there has to be some rare stuff to keep guy`s like me looking.
You occasionally see one on eBay.. I had one a few years ago.. and let it go. Some days wish I had kept it (really not much use for it now.. but a nice saw to have in shop). There really is not much out there that quite compares to that saw. Didn't have some of the features of the saws today.. but a brute of a saw. Don't think I could run one all day now though.. a lighter saw works just fine most days. Having said that, I have never actually seen an 090 run beside one of the 880's to really compare.
It should port fine I think. But not sure how much you would gain by doing it.
Thanks Tree Climber57, I have a couple of 090`s but we were talking about the big daddy of them all, the 090 with a 72 cc engine, the regular 090`s have a 137 cc engine. I think the 880`s would outcut the 090 in smaller wood but the 090`s were known for their pulling power in big wood over 60" dia. with bars up to 96". My biggest bar so far is a 72" but may pick up a longer bar just for the challenge of seeing how much these workhorses can really pull.
I've seen many ported 090s. In fact, sawbones has a jug I traded him off a Dave Neiger competition 090 built for Gary Johnson in the late 70's.
I've seen 090s with two and three carbs, tuned pipes, two-piece heads, stroker cranks, thin-ring pistons, nitromethane- the whole nine yards. I've seen 090s built up and turning 14k.
As far as the ten cube saws go, I think the number made was around 20. The owner of the saw shop I worked at for years got three of them in 1974/75. One he gave to a northern California falling contractor, one he kept in his private collection, and one he actually used to cut timber with. That one ended up getting smashed by a monster Sugar Pine.
I've never seen one of the ten cube saws on e-bay. I've seen a number of modified 090s on e-bay that had the re-located decompression valve but they were not ten-cube saws. The people that currently have the ten cube saws now are typically not the type that would sell them on e-bay. They know too many others that would want them and buy them straight out. I've already offered the old boy in Eureka that has one $3200 for it and he wasn't even interested.
Thanks for that reply Jacob, I am sure anyone with the big 10 cube saws would know what they are worth and it would take a remarkable amount of time and cash to make an owner ready to part with one. I have read of ported 090`s being used as competition saws but what would a regular woods port do to a 090, just like to help it maintain a little higher rpm under load.
It's been my experience that the 090 takes a woods porting real well. You could also bump up the HL carb on it for something a little bigger that would flow a little more fuel and air.
I've always liked the pictures on Madsen's page of the hotrod 084 and 090:
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