I was wondering if there is a formula I can follow to find out how much more pressure is applied on the piston end towards the cylinder walls if the rod ratio is steeper.

I want to compare a 1.59 Rod Ratio (347 cubic inch) to a 1.66 Rod Ratio (331 cubic inch).

What information would be needed.

I have the piston/connecting rod weights and measurements.

**347 – 3.40 in. stroke with a 5.4 in. rod.**

Piston weight is 474 grams. Rod weight is 620 grams.

1.59 Rod Ratio

Piston weight is 474 grams. Rod weight is 620 grams.

1.59 Rod Ratio

**331 – 3.25 in. stroke with a 5.4 in. rod.**

Piston weight is 472 grams. Rod weight is 620 grams.

1.66 Rod Ratio

Piston weight is 472 grams. Rod weight is 620 grams.

1.66 Rod Ratio

Do you need to know the crankshaft weight?

Any formulas out there to help predicate or give a good idea how much more thrust/pressure is applied towards the outer cylinder wall.

Thanks for any ideas