help with harmonic balancer

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Oct 8, 2010 | 10:08 PM

daniel5625

Thread Starter

Racer

Joined: Sep 2008

Posts: 269

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From: porterville ca

help with harmonic balancer

okay, i have a 93 lt1, will the harmonic balancer only go on one way? because the way it was marked the bolt holes dont line up, i also stripped one of them and thinking of just putting 2 bolts in. should it be fine with only 2?

let me know, thanks!

Oct 9, 2010 | 04:56 PM

capricelimburg

Heel & Toe

Joined: Sep 2010

Posts: 17

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From: Limburg Netherlands

The holes will only line up one way, if they aren't lining up rotate the balancer 120 degrees and try again. All 3 bolts need to be in or it will be severely out of balance (=bad)

Oct 9, 2010 | 04:58 PM

tehcarguy

Burning Brakes

Joined: Aug 2010

Posts: 833

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IMO leaving only 2 bolts in would be a bit dangerous.

Oct 10, 2010 | 01:51 AM

ZBRA

Le Mans Master

Joined: Mar 2000

Posts: 8,950

Likes: 4

From: Lafayette LA

You need all three bolts. You now need to pull the hub off the crank and replace it.

Oct 10, 2010 | 09:22 AM

STL94LT1

Race Director

Joined: Jan 2002

Posts: 12,263

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From: O'Fallon Missouri

Have you tried retapping the stripped bolt hole?

Oct 11, 2010 | 04:23 PM

JAKE

Le Mans Master

Joined: Feb 2000

Posts: 9,715

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From: Kempner Texas

I'd definitely chase the bad threads and re-install ALL THREE BOLTS. Tri-angling is the key and GM uses it for many of it's brackets/mountings, braces, etc.

You could also go up a very small amount in bolt size - maybe to a metric after a re-tap - in order to still be able to run THREE BOLTS. If there's any difference in the weight of the bolts it'll be negligible.

Either way, I strongly recommend installing THREE BOLTS.

Jake

Oct 11, 2010 | 06:48 PM

samsonb

Safety Car

Joined: Jan 2004

Posts: 3,759

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If it is the original balancer. That would be a good time to go ahead and replace it as it is a wear item.

Oct 11, 2010 | 08:41 PM

94vettelover2

Burning Brakes

Joined: Oct 2009

Posts: 773

Likes: 2

From: Minneapolis MN

Quote:

Originally Posted by joshwilson3

If it is the original balancer. That would be a good time to go ahead and replace it as it is a wear item.

If its in great shape & the hole is completely fubared,drill out & install a Heli-coil insert & install same size bolt.One Heli-coil shouldn't cause a issue.Or you could drill everyone & Heli-coil all 3 so the rotating weight will all be the same at each bolt hole.Alot cheaper than a new balancer