balance with forged pistons?

[sbanzer123]

i searched with no luck and my question is. if i put a set of cp forged pistons with stock rods will i have to have the rotating assembly balanced? has anybody gone without it? what were the results.

[4sfed180]

if you have the motor apart already might as well get it balanced. i didnt say RE-balanced...for a reason. stock sr and probably KA, cant say i have experience with it, balance sucks.

why CP? go mahle or go home :)

[slider2828]

mahle or je.... but yes you should get them re-balanced either way

[efrain240sx]

Did mahle fix their problem with the piston side skirt hitting the oil squirters ? And Whats wrong with CP pistons ?

[sbanzer123]

ya i have heard of problems with the skirts on the mahles, and i dont want to remove them.

[Sileighty_85]

No Love for Wiseco's?
No Problems with mine

Yeah get it all balanced bring'em the bearings,rods,pistons and rings, I also gave them my crank pully and OS Giken and they balances all that too.

You'll notice a big cut down in vibration through out the RPM's

[mr.booie]

i would definetly have them balanced. either way be sure to replace all the journals and bearings.

[GSXRJJordan]

Aaaannnnyyyytime you can balance the reciprocating assembly (up and down = pistons, rods, crank) you need to, and balancing the rotating assembly (around = pulley, clutch on top of rotating) it's a nice bonus.

This is huge with bikes lol, as you can imagine (vibrations hurt traction a lot). I've seen balances to the 1/100th of a gram (piston/rod/wrist pin) on Superbike motors - I did my gsxr1000 Superbike motor as close as I could, by the end I was using a fine metal file lol.