Has Stihl ever been known to do this and let it get into the hands of the public?
Here's why I ask. A new AS member sent me a nearly new MS440. At first I didn't think it had been used at all, but did find a little dust in the carb housing. The first thing I noticed is that it had a HD 5 carb with no provisions for limiter caps. Then I checked squish and it was onhly .018"-.20". I procede to degree the cylinder and find that there's nothing to improve. So I pull the cylinder off. This saw has already been ported!!! Not only that, it's the most meticulous work I have ever seen. Both the intake and exhaust are polished to a shine. They've both been widened. The transfers have been raised. The lowers have been blended. Everything's done to perfection. Even the piston windows have been worked and everything inside the piston smoothed. I also noticed that the intake port timing was adjusted by shortening the intake skirt. The work is fabulous.
So how did they lower the squish? The cylinder base does not look to have been turned and it's an OEM gasket. I think the case has been decked!
I went as far as to pull the flywheel to see if ignition timing had been played with. It had not.
I fired the saw up, warmed it up, and it was turning 15,500. And that's on Sunoco GTX. If anything, it would run leaner on pump gas. It was not too lean at 15,500, actually about where I would tune it for cookie cutting. I have it quite fat now at 14,700. These RPMs are not unusually for a ported 440, but are very good none the less.
Interestingly, I found the saw to have a 8-pin rim, not standard, and has no dogs. I don't know if the owner took them off for shipping or not. He may have.
So I called the owner. I asked him where he got this saw and if it was a integrity test for the Snellerizer, lol. He said he bought it off eBay a few years ago and was saving it since he has another one he works with. He has a lot of work saws and was saving this one. I'm shipping the saw back tomorrow. He said to keep the check and would send me his MS880 to do. OK, that'll work
So what do you think? Is this something from Stihl? Was this somebodies GTG toy that they built for themselves and pored all the extra time into to make it pretty inside? No rookie did this port work though, I can guarantee you of that. There's nothing "fancy" about was they did, but it is meticulous. Then they sold it on eBay with a stock muffler thinking it would sell better as a stock saw?
Here's why I ask. A new AS member sent me a nearly new MS440. At first I didn't think it had been used at all, but did find a little dust in the carb housing. The first thing I noticed is that it had a HD 5 carb with no provisions for limiter caps. Then I checked squish and it was onhly .018"-.20". I procede to degree the cylinder and find that there's nothing to improve. So I pull the cylinder off. This saw has already been ported!!! Not only that, it's the most meticulous work I have ever seen. Both the intake and exhaust are polished to a shine. They've both been widened. The transfers have been raised. The lowers have been blended. Everything's done to perfection. Even the piston windows have been worked and everything inside the piston smoothed. I also noticed that the intake port timing was adjusted by shortening the intake skirt. The work is fabulous.
So how did they lower the squish? The cylinder base does not look to have been turned and it's an OEM gasket. I think the case has been decked!
I went as far as to pull the flywheel to see if ignition timing had been played with. It had not.
I fired the saw up, warmed it up, and it was turning 15,500. And that's on Sunoco GTX. If anything, it would run leaner on pump gas. It was not too lean at 15,500, actually about where I would tune it for cookie cutting. I have it quite fat now at 14,700. These RPMs are not unusually for a ported 440, but are very good none the less.
Interestingly, I found the saw to have a 8-pin rim, not standard, and has no dogs. I don't know if the owner took them off for shipping or not. He may have.
So I called the owner. I asked him where he got this saw and if it was a integrity test for the Snellerizer, lol. He said he bought it off eBay a few years ago and was saving it since he has another one he works with. He has a lot of work saws and was saving this one. I'm shipping the saw back tomorrow. He said to keep the check and would send me his MS880 to do. OK, that'll work
So what do you think? Is this something from Stihl? Was this somebodies GTG toy that they built for themselves and pored all the extra time into to make it pretty inside? No rookie did this port work though, I can guarantee you of that. There's nothing "fancy" about was they did, but it is meticulous. Then they sold it on eBay with a stock muffler thinking it would sell better as a stock saw?
