balance with forged pistons? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

sbanzer123 · 01-30-2009, 02:54 PM

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 · 01-30-2009, 03:26 PM

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 · 01-30-2009, 03:30 PM

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

efrain240sx · 01-30-2009, 04:15 PM

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

sbanzer123 · 01-30-2009, 04:20 PM

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

Sileighty_85 · 01-30-2009, 04:50 PM

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 · 01-30-2009, 05:35 PM

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

GSXRJJordan · 01-30-2009, 05:40 PM

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.

01-30-2009, 02:54 PM	#1
sbanzer123 Zilvia Junkie Join Date: Aug 2006 Location: Buffalo, NY Age: 36 Posts: 534 Trader Rating: (6) Feedback Score: 6 reviews	balance with forged pistons? 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. __________________

01-30-2009, 03:26 PM	#2
4sfed180 Zilvia Member Join Date: Oct 2005 Location: vernon hills Age: 39 Posts: 224 Trader Rating: (7) Feedback Score: 7 reviews	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 __________________ I build air pumps!

01-30-2009, 03:30 PM	#3
slider2828 Post Whore! Join Date: Oct 2004 Location: San Francisco, CA Posts: 6,040 Trader Rating: (13) Feedback Score: 13 reviews	mahle or je.... but yes you should get them re-balanced either way __________________ Turn and Burn!

01-30-2009, 04:20 PM	#5
sbanzer123 Zilvia Junkie Join Date: Aug 2006 Location: Buffalo, NY Age: 36 Posts: 534 Trader Rating: (6) Feedback Score: 6 reviews	ya i have heard of problems with the skirts on the mahles, and i dont want to remove them. __________________

01-30-2009, 04:50 PM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	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 __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

01-30-2009, 04:15 PM	#4
efrain240sx Leaky Injector Join Date: Mar 2006 Location: azusa ca Posts: 127 Trader Rating: (0) Feedback Score: 0 reviews	Did mahle fix their problem with the piston side skirt hitting the oil squirters ? And Whats wrong with CP pistons ?

01-30-2009, 05:35 PM	#7
mr.booie Zilvia Addict Join Date: Apr 2008 Location: Palmdale 93551 Posts: 769 Trader Rating: (10) Feedback Score: 10 reviews	i would definetly have them balanced. either way be sure to replace all the journals and bearings. __________________

01-30-2009, 05:40 PM	#8
GSXRJJordan Post Whore! Join Date: May 2006 Location: San Diego, CA Posts: 9,135 Trader Rating: (19) Rides Gallery: GSXRJJordan Feedback Score: 19 reviews	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. __________________ Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com