Larry, I am not sure I see how changing the cylinder bore will decrease the amount of stress on the piston? If the forces excerted on the piston are related the the cross-sectional area, won't increasing this number exert more force (stress) on the rod and related components?
Yes, I will be taking the engine out this week. I am borrowing a hoist from a friend of a friend and should have it out this week. (I hope the DIYer Nazi in my nieghborhood does not get wind of this, Yes there is a local ordinance that says I cannot work on my vehicle in my own garage
)
Baja