Quick piston info...

[InfiniteGSX]

Its been soo long since I've been inside a 4g63 that wasn't blown to smitherines!

Is the Wrist Pin free floating in the piston or the rod?

 

[donniekak]

Press fit.

 

[InfiniteGSX]

Yes I know. But its supposed to float somewhere isn't it? Like inside the piston or inside the rod....

 

[gixrman]

It's press fit into the rod and floats in the piston UNLESS you have a full float aftermarket setup.

 

[InfiniteGSX]

Ok. Bringing this up again since I need more info. Is the Piston supposed to be completely free floating. OR should the rod/piston be stiff?

http://www.youtube.com/watch?v=CkUzpZourhQ

 

[hotrodssnova]

The pin should not move at all. The piston rotates on the pin. The pin will not move. If it does, that's a problem.

 

[InfiniteGSX]

Not what I asked. I asked if the piston should be hard to move on the wrist pin or free.

I think were having some misunderstanding.

4g63 Wrist Pins Press into the ROD. 4g63 pistons are supposed to float freely on the wrist pins with no restriction. Am I correct?

So when a piston/rod is hard to move, Doesn't that mean that the piston is bad? Due to heat or whatever reason. It is bad and if used will cause issues down the road.

Correct? Not Correct? I posted the video to make this easier but I guess that was hard to understand.

I now have 12 pistons and rods here, 4 2g, 4 Evo3 and 4 Evo2. 3 of the 2g rods/pistons move freely with no resistance, one has resistance. All 4 Evo3 Pistons have extreme resistance. And The Evo2 Pistons, 3 of them have light resistance, one has no resistance.

One of these is not like the other . My question is, the pistons with the resistance, are bad and should be replaced correct?