when installing new after market pistons does the

[vegasviper]

rotating assembly have to be balanced or just install pistons and go?

Thanks

 

[Bill M]

If you get direct replacements that weigh exactly the same as the stockers you do not have to rebalance.

 

[Fast Viper Dan]

There are a lot of good reasons to have the entire rotating assembly balanced. At least have the piston set done.
Balancing is cheep, do it.
My $.02

 

[GTSnake]

I would say balance it.

The last thing you want is after you get everything put back together then find out you have a vibration issue.

 

[Anaconda]

This isn't a bone-stock Civic engine....balance it.

 

[Schulmann]

Balance, you will feel the difference ...