i took the pistons out of my GSR motor, the wrist pins were tight in the piston and the connecting rods. I got them pressed out and placed the rods on my new P30 pistons. the Wrist pins that came with the P30 (which are stock honda piston and pins) were fitting loose.

i took them to the machine shop and got the pins pressed in the P30 and stock rods the pins still fit loose in the pistons but they are tight in the rods (actually they dont move). they are pressed in very tight.

I want to kno if they are suppose to be like that?
will the heat expand them and make them fit tight in the piston as well?
if i put them in the block will the pins move under RPM and slap the cylinder walls?

Is there something that i am forgetting between the piston and pin?

 

the pin should press in the rod and slip in the piston. if your can actually feel slop between the pin and piston i wouldnt run them.

 

slop as in play?
there no play, but the pin goes in and out of the piston easily. there is some drag but it is not tight. The pins have been pressed into the rods, and are tight, no play no movement. but they sit in the piston still allowing some side to side movement.

 

side to side movement is fine. if the pin was tight in the piston and the rod then it wouldnt pivot.

 

ok. well i guess i have nothing to worry about.