robe
Well-Known Member
Thanks for that. I appreciate your definitive comments on these often esoteric subjects. (As esoteric as mechanics can be.)I won't get too long winded with this reply. I am the only currently active moderator on the Phantom builders facebook group, and yes... there are a lot of special children in that group. Moving on.
My own build thread goes into detail on the V2 piston and cylinder having cylinder wall clearances in the "hotdog in a hallway" class. I also have openly stated many times I don't trust the stock pistons. Even the V3, although it has been extremely and supremely more reliable than the previous versions, still seems to be a bit loose on the tolerances.
I bought 3 aftermarket stihl pistons to check difference measurements, a Meteor and Hyway MS460 and some brand I don't remember M380. The Meteor was the only piston that fit the Phantom properly and had a tight but in spec. cylinder wall clearance. Aka no piston slap. A lot of this is in my first build thread for my phantom. The Meteor is also the most heavy duty piston for the MS460 saws, with the thickest supports, skirts, and crown. It comes at the cost of being the heaviest of the three, but I will take a bit of weight for a bit of reliability. I'm not building a race engine.
I did actually window my meteor piston (with rather large windows), and it has been holding up just fine. That said, if I were to do it again I would run the Meteor piston without windows. If for no other reason than the Phantom makes more power without the reed and windows.
My 2 cents has been delivered.
I look forward to what you have to say.