C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Harmonic balancer pin question

Thread Tools
 
Search this Thread
 
Old Nov 22, 2018 | 04:05 PM
  #1  
pelensky's Avatar
pelensky
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2008
Posts: 487
Likes: 4
Default Harmonic balancer pin question

Engine is a 1995 stock LT1. If you replace the factory oem balancer with a dayco / powerbond after market unit that is advertised to be neutrally balanced do i need to transfer the pin from the oem factory unit?

I assume that it is not necessary because the front of the engine is balanced internally and I believe that the factory balancer is neutrally balanced ( with this pin in it, and if that pin was removed it would not be balanced) Is that correct?

is the pin in the factory unit there because it's needed to make it neutrally balanced and that balancer is used in other GM applications they require an unbalanced balancer?
Reply
Old Nov 22, 2018 | 04:55 PM
  #2  
belairbrian's Avatar
belairbrian
Melting Slicks
Liked
Loved
Top Answer: 1
Top Answer: 3
 
Joined: Oct 2016
Posts: 2,024
Likes: 363
From: Central Alabama
Default

An after market balancer should be balanced when you buy it. the bolt pattern only lets it go one way.

FWIW I bought a DAYCO and it wasn't round caused a vibration on acceleration and you could see the tensioner moving at idle.
Reply
Old Nov 25, 2018 | 09:36 AM
  #3  
pelensky's Avatar
pelensky
Thread Starter
Racer
15 Year Member
Conversation Starter
All Eyes On Me
 
Joined: Sep 2008
Posts: 487
Likes: 4
Default

Originally Posted by ihatebarkingdogs
When the engines are hot-run after assembly at the engine plant, they are checked for final balanced while they are running. The little pin in the balancer is added as a result of this check. Exactly like balancing a tire.
So without the pin is the factory balancer neutrally balanced? And the pin just makes it customized to the engine, by making the balancer a little bit out of neutral to accommodate engine variation? If that is the case when replacing the balancer with a nother neutrally balanced unit I should put the pi in, correct?
Reply

Get notified of new replies

To Harmonic balancer pin question





All times are GMT -4. The time now is 07:42 AM.

story-0
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-1
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-2
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
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE