Flywheel cant be balanced?!?!?
Thread Starter
Le Mans Master
Joined: Jun 2006
Posts: 6,979
Likes: 31
From: Wichita KS
Flywheel cant be balanced?!?!?
Just called an engine shop and he said if the motor is externally balanced then the flywheel cant be balanced? I want my Centerforce clutch along with my turned OEM flywheel to be balanced, can it?
Former Vendor
Joined: Mar 2004
Posts: 1,518
Likes: 7
From: Valencia CA
The Gen III/IV platforms are all internally balanced.
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
Thread Starter
Le Mans Master
Joined: Jun 2006
Posts: 6,979
Likes: 31
From: Wichita KS
The Gen III/IV platforms are all internally balanced.
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
Racer
Joined: Jan 2003
Posts: 411
Likes: 1
From: Newhall CA
Maybe they're referring to the additional balancing weights on the balancer/pulley.... and I THOUGHT, the flywheel. Either way, though, those external weights don't really account for much (read: aftermarket pulleys wouldn't work if the extra few grams of weight made that much difference).
Further, how on earth are you SUPPOSED to get a new clutch/flywheel? Remove engine, new flywheel, external balance, reinstall engine? No way. Or are you supposed to transfer the little weights to the new flywheel, just like the official balancer/pulley method.
I will have to check my service manual on that one (for the official way, not the way everyone does it!)
- Colby
Further, how on earth are you SUPPOSED to get a new clutch/flywheel? Remove engine, new flywheel, external balance, reinstall engine? No way. Or are you supposed to transfer the little weights to the new flywheel, just like the official balancer/pulley method.
I will have to check my service manual on that one (for the official way, not the way everyone does it!)
- Colby
Pro
Joined: Feb 2002
Posts: 606
Likes: 0
From: Virginia Beach VA
The weights inserted into the flywheel and damper are balance corrections made to the engine post assembly. It's wise to send your original and new flywheel to a good shop that can measure the out of balance condition of the old and have it duplicated in the new one. IF your original flywheel does not have any correction weights then you can install your new flywheel as is. The balance shop I work with has found that the factory flywheels are very close to zero without correction weights.
Le Mans Master
Joined: Dec 2003
Posts: 5,561
Likes: 448
From: Atlanta metro Ga.
The weights inserted into the flywheel and damper are balance corrections made to the engine post assembly. It's wise to send your original and new flywheel to a good shop that can measure the out of balance condition of the old and have it duplicated in the new one. IF your original flywheel does not have any correction weights then you can install your new flywheel as is. The balance shop I work with has found that the factory flywheels are very close to zero without correction weights.
This is the correct answer, i.e. mark before removing and match the imbalance of the removed flywheel and match to the new one, otherwise it's a crap-shoot that you'll have a less-than-stock vibration level. The only down-side to this method is you have no opportunity to improve on the stock balance.
Last edited by Dan_the_C5_Man; Jan 21, 2008 at 10:29 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
Melting Slicks
Joined: Sep 2003
Posts: 2,062
Likes: 117
The Gen III/IV platforms are all internally balanced.
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
I would now question whether thats the right place to take my parts to be balanced but perhaps they never get involved in the newer LS stuff....
Anyway....balance away....you wont have any issues assuming they balance it properly.
Tony
Some LS6 Engines from the end of 2001 to mid 2002 at least were externally balanced...I have one of those!!!
My OEM Flywheel (saved carefully) in the pic below is showing the balancing from the factory with the Dowel Pins finally adding some extra weight.
I used it everytime a new clutch goes in for the match balancing:
48 grammes off balance is were is my OEM clutch assembly is, and once (first time) I had a zero balanced clutch mounted in...that was undrivable with very unbalanced situation between 2700rpm to 5200rpm.
ALWAYS check if DOWEL PINS are present in your OEM Flywheel...quick, simple and efficient.
Christian
