Pistonpin pressing

[Belgium Cuda]

What's the best way to press the pistonpins in/out without damaging the pistons?

[Changin Gears]

I use small fixtures that support the piston while pressing the pin out.  I think they came from Goodson.

Shops also use rod heaters for intallation.  The heat/expand the small end of the rod so that it is easy to push the pin through.

[moper]

press out. use a rod heater to expand the pin end to install.

[Kapteenikosmos]

I used normal household oven for the heating. Your gf/wife will love that 
I also kept the pins in freezer so it was pretty easy to install. Only problem was that it had to go with the first try. The pins seem to get stuck very easy if you don't have a good guide for the pin/piston & rod to steer the pin straight through the piston.

I had my fiancee to help me while I did mine. I had the piston secured in vice and my gf dropped the pin after I brought the rod from the oven. I had medium sized hammer and an extension for tapping the pin into the piston.I also used precise cut piece of tube under the piston to stop the pin at the right spot.

It usually took couple of sharp blows to get the pin through if the parts weren't totally excentric. Other than that it worked great.

I used temperatures of about 400 fahrenheits which seemed to work good and as far as I know it shouldn't be too much for the metal. I had an infrared thermometer borrowed from work to read the temperature but you could also do it without it.

For pressing out the pins I machined a counterpart from aluminium.

[Belgium Cuda]

Thanks guys My wife will love this.

[Ck[FIN]]

300C = 572F in the oven is enough and the rods will be fine. I have used the same method. But i didnt use the hammer, i used this kind of machinery. Pin is easily pressed straight into the rod.