uncle tony's garage gets called out by the roadkill guys
O.K. Here we go. I will explain this to you guys. It has nothing to do with piston slap. Maybe a little but it is not what makes more power.
When your crankshaft and your con rod is at 90 degrees the piston is 1/2 way down the bore. Or close to it. Actually not more like 1/4 way down, got a little carried away there.
Now the wrist pin is offset to the left looking at the front of the motor. You with me. O.K.
Now in your imagination move the wrist pin to the right about .100" That is about the offset of the pin.
The rod is now closer to vertical, so it is now taller and the piston is higher in the bore, now the crankshaft has not moved it is still in the same place.
Now you have to rotate the crank clockwise further to get the rod and the crank at 90 degrees.
So by swapping them left to right the piston is higher in the bore when the crank and rod are at 90 degrees, that is where you have the max push on the crank, as is the longer the arm.
Here are some 340 pistons you can clearly see the offsetView attachment 1715750107 View attachment 1715750107
Now to the swap, All you have to do is swap them. Think about it when you take a piston and rod assy out of the left bank and rotate it 180* the rod is in the correct position for the right bank.
Hope this helps.
Sorry about the pictures, I thought i had them right but then screwed them up LOL
I think you can figure them out.
O.K. Here we go. I will explain this to you guys. It has nothing to do with piston slap. Maybe a little but it is not what makes more power.
When your crankshaft and your con rod is at 90 degrees the piston is 1/2 way down the bore. Or close to it. Actually not more like 1/4 way down, got a little carried away there.
Now the wrist pin is offset to the left looking at the front of the motor. You with me. O.K.
Now in your imagination move the wrist pin to the right about .100" That is about the offset of the pin.
The rod is now closer to vertical, so it is now taller and the piston is higher in the bore, now the crankshaft has not moved it is still in the same place.
Now you have to rotate the crank clockwise further to get the rod and the crank at 90 degrees.
So by swapping them left to right the piston is higher in the bore when the crank and rod are at 90 degrees, that is where you have the max push on the crank, as is the longer the arm.
Here are some 340 pistons you can clearly see the offsetView attachment 1715750107 View attachment 1715750107
Now to the swap, All you have to do is swap them. Think about it when you take a piston and rod assy out of the left bank and rotate it 180* the rod is in the correct position for the right bank.
Hope this helps.
Sorry about the pictures, I thought i had them right but then screwed them up LOL
I think you can figure them out.
