I have 4 or 5 MS192T/TC saws that I'm rebuilding and noticed that on the earlier T models up to 2007 the cylinder is different and the compression is higher. On the newer TC models with Ergo-start there is a groove in the cylinder wall extending just below the exhaust port. It reduces compression, and probably makes it easier to start, but why did Stihl do this? A 30cc saw is not tough to pull over. Everything else about the two cylinders looks the same, and they have different part numbers. The older T pushes about 175psi, and the newer TC only comes up with about 140 psi.
I just finished rebuilding a couple of TC saws with the older T cylinder (OEM) and they have a very noticeable difference in compression. With the carb limiters removed, and the muffler outlet opened up, they really run well.
This is confirmed as a fact? In error I have dimpled my 192tc cylinder wall attempting to repair a loose muffler and will need to replace it.
I have used a number of the 'T' cylinders #1137-020-1203 and they bolt in just fine. There is only one piston part number, so it works with either style cylinder if you are re-using an old piston. Dealer charges $99 for the P/C assembly... haven't found any aftermarket ones yet.
I have two 019T's that will be getting overhauled this winter, will the crankshaft out of an old 017 work in the 019? I have a crank that is out of time......
Thank you for the sound counsel. Before checking for a reply here I called and Mark at Stihl confirmed that the 192tc is compatible with the 192t cylinder just as you folks have confirmed. Off to go get that done.