Fletch
Member
This is the second time I've done this and I want to kick myself!! I had just rebuild the top end too
It's my fault though so I can't blame the engine.
My question:
When my piston seized the first time it happened right after I refilled and changed the mix from 60:1 to 40:1.
This time I was running 50:1 and I'm not sure exactly what the new mix was because I added it to the tank at the pump. The tank filled before I could get to my pre-calculated intended amount of gas, so I had to estimate it.
What I am wondering is if I was running a richer mix to begin with (say 70:1 for example) and then I changed to 60:1 or 50:1... would the same thing happen? Or is it maybe a situation where if I run 40:1 or more it will seize (meaning oil specific)? Is it just the relative amount of change in the oil at any ratio, or the fact that I hit some kind of "magic number" at 40:1?
I hope that makes sense, and I know it is purely speculation but I'd appreciate any opinions. My Mikuni carb is very sensitive to changes because it is so fine-tuneable (not a real word). For some reason I think the tolerance on an NT would be higher (more forgiving).
Thanks
It's my fault though so I can't blame the engine.
My question:
When my piston seized the first time it happened right after I refilled and changed the mix from 60:1 to 40:1.
This time I was running 50:1 and I'm not sure exactly what the new mix was because I added it to the tank at the pump. The tank filled before I could get to my pre-calculated intended amount of gas, so I had to estimate it.
What I am wondering is if I was running a richer mix to begin with (say 70:1 for example) and then I changed to 60:1 or 50:1... would the same thing happen? Or is it maybe a situation where if I run 40:1 or more it will seize (meaning oil specific)? Is it just the relative amount of change in the oil at any ratio, or the fact that I hit some kind of "magic number" at 40:1?
I hope that makes sense, and I know it is purely speculation but I'd appreciate any opinions. My Mikuni carb is very sensitive to changes because it is so fine-tuneable (not a real word). For some reason I think the tolerance on an NT would be higher (more forgiving).
Thanks