Quick ?
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Launching!
iTrader: (7)
Joined: Jan 2006
Posts: 292
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From: Lexington, Kentucky
Quick ? Are LS stock rotating assemblies balanced? Reason I am asking is tha tI have a LQ4 and i bought new stock rods and pistons, so I was wondering if I would have problems???????
Anytime you switch components in a rotating assembly you should re-balance. They are well balanced from GM.
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Largest Stocking Distributor of LS-x Engines / CHECK OUT OUR NEW WEBSITE!
COMP - FAST - PACESETTER - DIAMOND RACING - EAGLE SPECIALTY PRODUCTS - CALLIES - COMETIC GASKETS
RAM CLUTCHES - MOSER ENGINEERING - KOOK'S HEADERS - ARP - GM BOLTS AND GASKETS - MSD - NGK
POWERBOND - ASP - AND MORE!
On The Tree
Joined: Aug 2007
Posts: 112
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From: Finland
I have similar situation, new rods are 28grams heavier than stock ones and pistons weigh approx. same as originals, so bobweight becomes higher and that requires mallorymetal added to crank. At least here in Finland adding that mallorymetal or tungsten is quite expensive operation. That's why I'm thinking eventually of buying forged aftermarket crank, cheaper balancing compensates the overall higher price.
Thread Starter
Launching!
iTrader: (7)
Joined: Jan 2006
Posts: 292
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From: Lexington, Kentucky
I weighed my stock rods and pistons and also my new rods and pistons. Here are the results:
Old New
1: 1208 1: 1208
2: 1207 2: 1205
3: 1211 3: 1208
4: 1216 4: 1203
5: 1212 5: 1203
6: 1214 6: 1205
7: 1212 7: 1203
8: 1211 8: 1204
Like I said these are the old Lq4 rods pistons and rings, VS: New Lq4 rods pistons and rings. Do you think these are within GM specs. As i understand, GM rotating assemblies are balanced but only to a +/- ? This is what I am trying to figure out!!!
Old New
1: 1208 1: 1208
2: 1207 2: 1205
3: 1211 3: 1208
4: 1216 4: 1203
5: 1212 5: 1203
6: 1214 6: 1205
7: 1212 7: 1203
8: 1211 8: 1204
Like I said these are the old Lq4 rods pistons and rings, VS: New Lq4 rods pistons and rings. Do you think these are within GM specs. As i understand, GM rotating assemblies are balanced but only to a +/- ? This is what I am trying to figure out!!!
