just bought used civic si pistons with 35k miles on them. i am going to put them in my ls block with gsr head to help raise compression. do i need to change out the piston rings or will i be okay as is? the pistons have low mileage and the rings look to be fine, but im not sure if i have to do this or not? thanks for any help.

 

Use new rings.

 

you want new rings, to save you from a headache later on.

 

definately 100% new rings!

 

are u sure the pistons are still good.. cause usually when you press them off the rods it ruins the pistons.. but new rings for sure

 

Always use new rings. A little money now saves you alot later

 

are you serious? theyre still attached to the rods, but i wasnt aware that taking them off would ruin them. is that correct? isnt there a way to do it without ruining them? like by warming them up and cooling the pins?