jwr3k
Member
- Local time
- 2:02 AM
- Joined
- Jul 24, 2019
- Messages
- 41
So. I have a 66cc 2-stroke with dio reed valve and windowed piston.
I ported my cylinder, mainly dropping the floor on the intake and a little widening. Anyways, I had the reed valve removed from my cylinder and was looking through the intake as the windowed piston moved up and down.
I noticed that the bottom of the piston skirt doesn't fully clear the intake, so I thought 'what is the point of wideniing my intake if it doesn't fully open?'
I would normally trim the piston skirt a little but I don't have a whole lot of material beneath the windows to work with. If I was to trim it, it would leave very little material and I would be afraid of it weakening and perhaps even breaking off.
So what should I do? Make my own windowed piston and compensate for this? And in doing so, would the bottom of the window have to be higher than optimal in order to leave sufficient material for durability?
I ported my cylinder, mainly dropping the floor on the intake and a little widening. Anyways, I had the reed valve removed from my cylinder and was looking through the intake as the windowed piston moved up and down.
I noticed that the bottom of the piston skirt doesn't fully clear the intake, so I thought 'what is the point of wideniing my intake if it doesn't fully open?'
I would normally trim the piston skirt a little but I don't have a whole lot of material beneath the windows to work with. If I was to trim it, it would leave very little material and I would be afraid of it weakening and perhaps even breaking off.
So what should I do? Make my own windowed piston and compensate for this? And in doing so, would the bottom of the window have to be higher than optimal in order to leave sufficient material for durability?