Help with harmonic balancer replacement
Thread Starter
Pro
Joined: Mar 2001
Posts: 512
Likes: 19
From: Greensboro NC
Help with harmonic balancer replacement
My harmonic balancer failed last week. I'm going to be putting heads and cam in next weekend. I purchased a used harmonic balancer and was wondering what I have to do to make sure this thing is balanced when I put it on. All pointers and tips would be greatly appreciated.
Frank
Frank
Thread Starter
Pro
Joined: Mar 2001
Posts: 512
Likes: 19
From: Greensboro NC
Re: Help with harmonic balancer replacement (QwikSilvr)
Anybody?
My harmonic balancer failed last week. I'm going to be putting heads and cam in next weekend. I purchased a used harmonic balancer and was wondering what I have to do to make sure this thing is balanced when I put it on. All pointers and tips would be greatly appreciated.
Frank
Frank
Burning Brakes
Joined: Jul 1999
Posts: 750
Likes: 0
From: Valencia Ca
Re: Help with harmonic balancer replacement (QwikSilvr)
Okay, I'll tell you.
Couple of ways I know....
one
1. Mark the old harmonic's radial position (relative to a know point on the engine) this is necessary because the LS1 does not have a crank key.
2. Match the new harmonics balance (imbalance) to the old. Any performace machine shop should be able to do this.
3. Install the new harmonic EXACTLY where the old was with careful attention to alignment of the steel pins.
two.
1. Yank off the old harmonic
2. Install new harmonic
3. Pound in pins until the motor doesn't rattle the rear view mirror anymore
Thread Starter
Pro
Joined: Mar 2001
Posts: 512
Likes: 19
From: Greensboro NC
Re: Help with harmonic balancer replacement (Paradigm)
Paradigm,
Thanks for your post. It looks like I'm going to have to go with 'two' because the original balancer's rubber ring has failed causing the outter section of the pulley to slide back and rub against the engine. I can't imagine that it's reliable as far as the original balance is concerned.
Do I order the balance weights from a dealer?
This looks like it might be a PITA! :U
Thanks for your post. It looks like I'm going to have to go with 'two' because the original balancer's rubber ring has failed causing the outter section of the pulley to slide back and rub against the engine. I can't imagine that it's reliable as far as the original balance is concerned.
Do I order the balance weights from a dealer?
This looks like it might be a PITA! :U
Okay, I'll tell you.
Couple of ways I know....
one
1. Mark the old harmonic's radial position (relative to a know point on the engine) this is necessary because the LS1 does not have a crank key.
2. Match the new harmonics balance (imbalance) to the old. Any performace machine shop should be able to do this.
3. Install the new harmonic EXACTLY where the old was with careful attention to alignment of the steel pins.
two.
1. Yank off the old harmonic
2. Install new harmonic
3. Pound in pins until the motor doesn't rattle the rear view mirror anymore
Couple of ways I know....
one
1. Mark the old harmonic's radial position (relative to a know point on the engine) this is necessary because the LS1 does not have a crank key.
2. Match the new harmonics balance (imbalance) to the old. Any performace machine shop should be able to do this.
3. Install the new harmonic EXACTLY where the old was with careful attention to alignment of the steel pins.
two.
1. Yank off the old harmonic
2. Install new harmonic
3. Pound in pins until the motor doesn't rattle the rear view mirror anymore
Burning Brakes
Joined: Jul 1999
Posts: 750
Likes: 0
From: Valencia Ca
Re: Help with harmonic balancer replacement (QwikSilvr)
Sorry to hear that about the ring moving. Two balance weights came with the last hramonic I bought (Z06).
If you need more, or if they don't supply you them, they are .250 diameter and the ground steel dowel pins that machine shop supply houses sell work well.
Here's a tip to make it a little easier...buy the ground steel dowels mentioned above. These pins slip into the pre-drilled holes of the balancer and can be easily removed if you have them in the wrong location. Once you find the correct spot for them a little super glue will retain them forever.
good luck
If you need more, or if they don't supply you them, they are .250 diameter and the ground steel dowel pins that machine shop supply houses sell work well.
Here's a tip to make it a little easier...buy the ground steel dowels mentioned above. These pins slip into the pre-drilled holes of the balancer and can be easily removed if you have them in the wrong location. Once you find the correct spot for them a little super glue will retain them forever.
good luck
