ATS_Aaron
X-
- Location
- Shady Shores, TX
I haven't posted in a long time. Been busy. Have a 2 month old baby boy at home, been playing mister mom in the mornings and working in the afternoons. No time to read the X. 
I got a few spare minutes tonight so ATS_Scott and I headed to Lake Lewisville. After about 20 minutes of riding I noticed I was losing power. I turned and headed for the boat ramp. 30 seconds later the ski died. Scott towed me in (used my hood strap as a tow rope). We didn't have much daylight left, so I convinced him to hang around for a few minutes and we pulled the head.
Sorry, no pictures yet. The rear cylinder is perfect. The front cylinder is trashed. The outside of the top of the piston is pretty chewed up. The center looks nearly perfect though. What causes that kind of destruction? Too lean? Too much timing?
I should probably back up, I don't think the destruction happened all tonight. In fact the ski has been slow to crank/hard to start for the last couple of outings.
Early this season I had a starter drive shell out on me and take out the stator, I soldered the charging coil back to continuity and replaced the pulsing coil. The CDI I have (Advent) doesn't use the exciter coil. I didn't check timing after I installed it, I just tried to make sure the old marks lined up.
I have felt it kick back during a hot start, but usually only when it is turning over slowly...I blamed it on a low battery and possibly a botched charging coil repair job. I installed a new battery before the last time I went out.....it barely lasted a day and a few times I had to let the ski cool off before it would restart.
I have and always had great flow out both water outlets, so I don't think it overheated on me and the good cylinder looks really rich if anything. Even the bad cylinder's aluminum covered spark plug still looks rich.
This is the Walmiton's ski that I bought from Superramjet early this summer. He had (I think) 3 seasons on it with no issues other than a broken cylinder dome o-ring. I made no tuning changes since buying it. The engine is a Team Scream stroker, with 84.5mm bore. I was told it's a 61X cylinder with big bore sleeves so hopefully if I need to go 85mm I can.
Any ideas?
Aaron
I got a few spare minutes tonight so ATS_Scott and I headed to Lake Lewisville. After about 20 minutes of riding I noticed I was losing power. I turned and headed for the boat ramp. 30 seconds later the ski died. Scott towed me in (used my hood strap as a tow rope). We didn't have much daylight left, so I convinced him to hang around for a few minutes and we pulled the head.
Sorry, no pictures yet. The rear cylinder is perfect. The front cylinder is trashed. The outside of the top of the piston is pretty chewed up. The center looks nearly perfect though. What causes that kind of destruction? Too lean? Too much timing?
I should probably back up, I don't think the destruction happened all tonight. In fact the ski has been slow to crank/hard to start for the last couple of outings.
Early this season I had a starter drive shell out on me and take out the stator, I soldered the charging coil back to continuity and replaced the pulsing coil. The CDI I have (Advent) doesn't use the exciter coil. I didn't check timing after I installed it, I just tried to make sure the old marks lined up.
I have felt it kick back during a hot start, but usually only when it is turning over slowly...I blamed it on a low battery and possibly a botched charging coil repair job. I installed a new battery before the last time I went out.....it barely lasted a day and a few times I had to let the ski cool off before it would restart.
I have and always had great flow out both water outlets, so I don't think it overheated on me and the good cylinder looks really rich if anything. Even the bad cylinder's aluminum covered spark plug still looks rich.
This is the Walmiton's ski that I bought from Superramjet early this summer. He had (I think) 3 seasons on it with no issues other than a broken cylinder dome o-ring. I made no tuning changes since buying it. The engine is a Team Scream stroker, with 84.5mm bore. I was told it's a 61X cylinder with big bore sleeves so hopefully if I need to go 85mm I can.
Any ideas?
Aaron
