Lightening wrist pins

[RHP997]

What's everyone's consensus on taking material out of the wrist pins? Building a new motor since the last one threw a rod so I am reusing 5 pistons out of that motor which were oem cummins pistons. Ordered one new mahle piston and sent it to get coated before checking it and come to find out its a little bit lighter. All in all I need to take about 10 grams out of the other 5 pistons/pins. Is there any risk to shaving some wieght out if the pins or even just running it with one piston/pin 10 grams lighter then the rest. The other 5 are all within 3 grams and will be using billet rods so they're all perfect to each other.

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[jedeka]

A machine be shop should be able to balance them to the new piston weight. There should be extra material on the inside of the piston to lighten them up.

 

[bigstacks95]

I've taken material out of the inside of the wrist pin before. There is like a little lip in there that you can drill into on a lathe. Things are phuckin hard as hell though.

 

[RHP997]

I took some off of an extra one I had. I used a carbide burr with a die grinder. Worked pretty good I just thought it be easier in a lathe if I can take a slight cut on each one

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