badasstoy2

had my new b16 pistons put on my ls rods but they seem a little tighter not as much play on rods like before will this hurt anything if so what could it hurt

Fabrik8

So you have new pistons and new wristpins on old rods? I'm guessing the difference is that the wristpins are new and aren't worn at all, and possibly a different tolerance grade than the old ones. Plus, if they don't have much lubricant on them yet.....

Are they tight enough that they don't move freely and are sticking...?

yanko 15

Fabrik8 clearify this if need be

would the clearances for the rods and wrist pins be different between the LS motor and the b16?
i just remember learning something along those lines in shop class ha

Fabrik8

I seem to remember something about the LS rods needing to be resized or something like that. I can't remember any of that stuff anymore.

badasstoy2

yea they sticky not lose like the ones that came off they don't flop side to side easy

BAN HAMMER

Take your pistons and rods to a machine ship and have them
measure the wrist pin clearance. They need to be exactly the same

5literbeater

buy yourself a dial bore gauge and a quality micrometer. Measure con rod journal inside diameter and wrist pin outside diameter and subtract. Look up specs for rod to wristpin clearance and see where you are @.

brandon.beene

b16 pistons fit right on, I just did it to a ls/vtec i just built so i know 100% they will. What you are thinking about fabrik8 is having to shave the fat end of the LS rod that way the other b-series pistons will fit (GSR,ITR,CTR)

brandon.beene

http://www.tamparacing.com/forums/ho...8b1-motor.html

http://www.ff-squad.com/tech/temp/pistons.htm