C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

The dreaded Harmonic balancer

Thread Tools
 
Search this Thread
 
Old May 5, 2023 | 04:03 PM
  #1  
Komiller118's Avatar
Komiller118
Thread Starter
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2017
Posts: 288
Likes: 13
From: Engelhard NC
Default The dreaded Harmonic balancer

2003, 92k miles. A/T
I learned a day or so ago by examining my balancer with my bore scope that it is indeed cracking. Heck, now i am afraid to drive it, so parts and a couple tools have been ordered and this afternoon I will start tearing it down. I have the detailed write up by scottlunger and all comments ans suggestions associated with that thread. I do have a couple questions.
By using the summit balancer "wrench" I will not have to drop exhaust and remove starter, is that correct?
Next, in one comment, a fellow had his radiator out and did not have to lower the "carriage". Since I need to change the coolant anyway, I will be removing the radiator. Does the sway bar still have to come off?
I will be doing mine on a quick jack.
Reply
Old May 6, 2023 | 07:26 AM
  #2  
ipuig's Avatar
ipuig
Drifting
15 Year Member
All Eyes On Me
Top Answer: 1
 
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
Default

Originally Posted by Adwest52
You have to lower the cradle if you want to completely remove the steering rack.
You do not have to lower the engine cradle to remove the steering rack.
Reply
Old May 6, 2023 | 07:53 AM
  #3  
Adwest52's Avatar
Adwest52
Pro
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Sep 2019
Posts: 719
Likes: 642
From: Northern Ohio
2025 C5 of the Year Finalist - Unmodified
2022 C5 of the Year Finalist - Unmodified
2021 C5 of the Year Finalist - Unmodified
Default

Originally Posted by ipuig
You do not have to lower the engine cradle to remove the steering rack.
We all do things differently. I chose to lower the cradle but thank you for your input. Have a great day!!!
Reply
Old May 6, 2023 | 08:30 AM
  #4  
ThomasR's Avatar
ThomasR
Melting Slicks
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Apr 2019
Posts: 2,466
Likes: 700
From: Clark, NJ
Default

You don't have to remove the exhaust to move the starter out of the way for the flywheel holding tool. The exhaust does have to come off to replace the starter.

I moved the steering rack to the passenger side of the car.



​​​​The hardest part of the job is removing the power steering lines from the rack.
Reply
Old May 6, 2023 | 08:49 AM
  #5  
averagejoesautos's Avatar
averagejoesautos
Instructor
 
Joined: Aug 2022
Posts: 243
Likes: 93
From: Ashburn, VA
Default

Originally Posted by ipuig
You do not have to lower the engine cradle to remove the steering rack.
True...but it can help wrangle that sucker out without twisting and contorting lol

I don't know why you would need to touch the exhaust lol Just impact the bolt off. If you dont have an impact...buy one. Also buy the balancer removal tool [OEM tools has a trick one] but the 3 insert rod one will get er done as well]. Dont skimp on the seal...now would be an opportune time to also re-seal timing cover, cam plate, and inspect the timing chain and gear. The rack will be the longest part of the job...but after that...press off...press on...reasemble...roll away clean.

I to have to attack this job soon. It's not bad, but just plan a weekend and replace as much "while your in there" as you can. Taking the rack out is the pain in the dick part.
Reply
Old May 6, 2023 | 11:31 AM
  #6  
grinder11's Avatar
grinder11
Race Director
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Default

Originally Posted by Komiller118
2003, 92k miles. A/T
I learned a day or so ago by examining my balancer with my bore scope that it is indeed cracking. Heck, now i am afraid to drive it, so parts and a couple tools have been ordered and this afternoon I will start tearing it down. I have the detailed write up by scottlunger and all comments ans suggestions associated with that thread. I do have a couple questions.
By using the summit balancer "wrench" I will not have to drop exhaust and remove starter, is that correct?
Next, in one comment, a fellow had his radiator out and did not have to lower the "carriage". Since I need to change the coolant anyway, I will be removing the radiator. Does the sway bar still have to come off?
I will be doing mine on a quick jack.
Don't sweat changing the balancer. It just takes a bit of time getting to it. I recommend getting a turkey baster to suck all the power steering fluid out of the reservoir before disconnecting it from the rack. IMHO, and I've had my balancer off and on several times for cam changes, get yourself an air or electric impact capable of around 350lb/ft of torque. Also buy an ARP balancer bolt. Remove the OEM TTY bolt, and pitch it. The impact and ARP bolt will eliminate the torquing, buying tools that hold the crank from turning, and torquing to angle. The ARP bolt will never need replacing, either. My opinion, YMMV.

Last edited by grinder11; May 6, 2023 at 12:02 PM.
Reply
Old May 8, 2023 | 06:08 PM
  #7  
Komiller118's Avatar
Komiller118
Thread Starter
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2017
Posts: 288
Likes: 13
From: Engelhard NC
Default

Got my summit balancer wrench today and got the balancer off...... Found these numbers on the back. The tool worked great....
Reply
Old May 8, 2023 | 06:16 PM
  #8  
Komiller118's Avatar
Komiller118
Thread Starter
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2017
Posts: 288
Likes: 13
From: Engelhard NC
Default

This is the puller I used, already had it. Worked just fine

Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old May 9, 2023 | 01:24 AM
  #9  
sayerbloke's Avatar
sayerbloke
Instructor
15 Year Member
 
Joined: Mar 2007
Posts: 108
Likes: 78
From: Norfolk, UK
Default

Good . That’s the same balancer puller I bought and I also got the Summit wrench after @Toys4Life C5 sung it’s praises

Reply
Old May 9, 2023 | 10:35 AM
  #10  
averagejoesautos's Avatar
averagejoesautos
Instructor
 
Joined: Aug 2022
Posts: 243
Likes: 93
From: Ashburn, VA
Default

What balancer are you installing? Another factory one of a summit SFI one? A trick I like to use after snapping NUMEROUS balancers install tools is to heat the balancer to about 200 - 225 degrees in the oven. Make sure babe doesnt have any cooking to do...pop that balancer in the oven...heat at like 300 degrees...an IR temp gun will help you know when its ready checking from time to time. After the ovens warmed up...I usually let it set for 10 mins then check the temp and continue checking every 10 mins until its hot enough. After that...oven mitts please...move quickly to not let it cool down too much...and slide her on the crank snout. Its not going to go completely on...DUHHHHH...but it will be SIGNIFICANTLY easier to pull on with the installer tool effort wise. its also MUCH less stress on the crank threads which is what you want. Since I've used this method...I havent snapped a balancer install tool since . A little bit of motor oil on the sliding surfaces [as well as the seal] will keep everything involved in the transaction happy.

Happy pressing
Reply
Old May 9, 2023 | 02:26 PM
  #11  
Komiller118's Avatar
Komiller118
Thread Starter
Racer
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Mar 2017
Posts: 288
Likes: 13
From: Engelhard NC
Default

Originally Posted by averagejoesautos
What balancer are you installing?

Happy pressing
I am using a dayco.
Reply
Old May 9, 2023 | 02:31 PM
  #12  
sayerbloke's Avatar
sayerbloke
Instructor
15 Year Member
 
Joined: Mar 2007
Posts: 108
Likes: 78
From: Norfolk, UK
Default

Originally Posted by Komiller118
I am using a dayco.
Same again, lol. Powerbond PB1117N.
Reply

Get notified of new replies

To The dreaded Harmonic balancer





All times are GMT -4. The time now is 03:15 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE