How to attach a piston to a rod?

[Wheels-a-turnin]

I'm rebuilding a 6bolt and I need to replace the pistons. Well this is my first time and I was wondering how to attach the piston to the rod?

 

[timloomis]

Its pressed in.Stick it in a hydraulic press,or have someone else do it if your not comfortable,things can break.

 

[Suparata]

Take them to a machine shop to have it done right.

 

[sho_tyme_psi]

Take them to a machine shop to have it done right.

+1 This requires a shop.

 

[groundPork]

+1 This requires a shop.

Plus twenty hundred thousands I think... Not really sure what the OEM I.D> of the pin small end is, versus OEM pin O.D. (might actually be cold press friendly). But let me let you all in on a rather weird little bit of info... machine shops generally do not cold press the pins in!!!! huuhhhh?!!! They acually heat the small end in a rod heater till ornage, freeze the pin, then insert it with an extension by hand, no press. Some of you may have notices heat discoloration on the small end of your rods. This is why. Now not that it's totally wrong to do this, but It's not my favorite for obvious reasons. Annealing metal being one.

That being said, cold pressing a pin in is potential for distorting the skirt of the piston or worse, making the pin bores out of alignment of eachother. I know this is like a big commercial thumbs up to aftermarket rods and pistons, but... get full floating parts, they are so much better on so many levels.

No paying for hanging pressfit pistons on rods ( anywhere from 50-100 bones depending on who you know), way less friction, way less wear (trust me on this one), stronger rods to begin with and stronger pistons, YOU can take the assembly apart and you can re-assemble JOHNNY-5... errrWTF whatever... shall I keep going? OH... stockers are RPM and horse power limited!