bluevenom867
I will have images of molesting stuffed animals in
Take a 100,000 mile piston (w/ oil ring intersection) and one without. Driven the same...
I promise you the one with the oil ring intersection will have a greater chance of blowby...
Just take a look at the piston...pretty simple really.
Rod ratio doesn't have to much to do with anything for most enthusiast. It is part of engineering and can not be ignored.
The 331 for example has an offset wrist pin to improve the rod ratio. They wouldn't design it that way if there was not a reason.
In my opinion it is literally unethical to prescribe to someone the 'longer rod' with a wrist pin that goes up into the oil ring land area of the piston unless they plan to race it. The shorter rod with the same cubes would be a better fit for a true street car.
Ok,for one,most ring manufactors make EXCELLANT oil ring pack "supports" (thin piece of steel ring that goes in between the oil ring pack to bridge the pin gap) that fix just about any problems that you would normaly encounter with a pin/interescting ring piston.
Secondly,rod ratio....STOP WORRYING ABOUT IT! For the street go for the most cubes,only horrably short rods ratio cause problems.The 5.4L mod motors dont have a very good rod ratio and on high milage (100,000+) they wear a little bit on the thrust side,witch oblongs (out of round) the bore just sligthly.Usualy the only problem it causes,it a slight piston knock till things warm up,and maybe a very marginal drop in compression ( havent heard anything about this one,but I would think).
However, I will say for most stroker motors that will be getting rebuilt befor 100K anyways (hell,your worried about rings waring and buring oil,when you'll probably need valve springs befor 50K) dont worry abot rod ratio.Test have shown that a shorter rod ratio can produce slightly more torque,and it also reduces piston dwell time,witch helps with revesion at high rpm (rpm that most of you will never see 8,000+).Of course,it has a larger effect on bigger motors.Longer rod,only benifit is better stability really.