phantom 85 piston ring catching discussion and possible solution 

Never had 1 but herd of the problems, ggz-👽👍

Stihl is known to have rings drop into their intake ports. They had a “Tonsil” built into the intake port to give ring support.

tick tick tick tick tick...just a matter of time

I got a gen 3 and replace piston with meteor brand 046 piston. It has a wider skirt but narrower ring pin placement, closer to intake port. I marked where the ports and transfers were when I put the cylinder on. I also chamfered the end of the rings cause they are razor sharp. I've got roughly 100 miles on it pulled the intake off and everything still looks good.

You say exactly what I try to tell everyone in a good inglés 😂 you can run this use no windows and use the original carb you be more happy I have 7 tanks aready no problem

Leave the bottom ring off or you can notch the ring and put the ring gap wherever you want. Lastly you can remove the pin, drill a new hole and use a drill bit one size larger than the hole you drilled drive the drill bit in and cut it off to make a new pin.

So glad I didn't buy a Phantom 85......I'm thinking for a decent,hopefully reliable, budget build with decent power- use my mz65 clone pipe $45, gety a YD100 engine kit $120- ported, with better wrist pin clips, do a 3rd intake transfer port, G2 Reed/VM22 carb $50 with a balanced crank, port match case & cylinder.....It still won't be as fast as a Phantom 85 (52mm VS 50mm) but maybe get close.

I bought all 3 gens. First was cool but the bushing was trash. Second was cool it would catch rings and the third didn’t last 3 miles before a ring caught again. I was able to keep the 3rd one running with just top compression ring. If you recenter the stud hole I think both rings would catch

I switched out the piston for a stihl 52mm 044ms440 big bore piston and rings and 12mm pin bearing then I put my own window in the piston and has been working fine got the idea from ERT channel they hold a speed record on a phantom 56 miles and hour with no window piston one of my phantom has almost 500 miles on her and still working the other has 50 miles on her working fine had a little issue with cylinders getting hot switched to the 2 stroke oil mix they recommended and running cool now The oil is Valvoline multi purpose 2 stroke oil they recommend racing 2 stroke oil Valvoline but you won't be able to find it so they said go to the next best thing which is the Valvoline multi purpose you can find it at autozone and these phantom engines love oil

This is exactly why im thinking ebike, spend hard earned money on something thats not gonna work, ive bought one and blown twice now its in my attic

I was thinking about turning the whole piston around so pins are on exaust side

Were u get that piston from

6:05 thanks for the mención E.R.T. 🦾. Now you phantom sure be 🔥.