1997 C5

Hi guys, I have 97 C5 just turned over 75k miles has original OEM harmonic balancer that is wobbling. I am in process of deciding what brand to replace with. I am not going with OEM because of the wobbling issue that will occur again down the road. What aftermarket harmonic balancer should I go with ? what kind of prices can i expect?
I will also replace the crank shaft seal same time with harmonic balancer.
I got a quote $453.20 labor only for shop I send mechanical work to that is discounted price. Seems that break down to 4.0 hr labor.

Thank you for your input in advance.

JerriVette

My GM tech quoted me 6 to 8 hours of labor and is using a summit racing product on my c6 ..

The wobble is fine...imo ...its when the air conditioning belt starts to chirp for five minutes every morning and then goes away when warmed up...that it's time to change the harmonic balancer..imo and I'm now just thinking of doing the job...

I'm waiting to see if the chirping goes away in the warm weather...

The hard rubber in the harmonic balancer is loosing elasticity in my opinion...and that internal imbalance is what causes the wobble. When the wobble gets so much that the ac belt creates a chirping noise that's about the time to replace the harmonic balancer..imo

That's how my world class GM tech has explained this situation to me on my c6...

Mine visually wobbled for tens of thousands of miles...

The chirping is a nuance...as I start the vehicle up.

I was debating putting on a supercharger with 8 hours of labor being discussed just to remove and install the harmonic balancer. I doubt I'll do the supercharger as I find I'm beginning to itch for my fourth new corvette...although with prices climbing I'm thinking Bentley preowned or maybe that brand spanking new c8..

My guys prices is a little high but I like him so I'm not nickel and diming him on this job.

They give me a free loaner so what the hell..it's all just buried in the price anyway.

You post reminds me to set up the appointment..

Good luck and the c5 I'm sure is a different part...but your quote for labor is a very good deal.

If you do a search...I think you'll find powerbond or ATI are good choices...

Btw I got ten years one month and 119k miles on my stock harmonic balancer...

Missed the extended warranty coverage by this...much...

God dam it...

My fault entirely.

Good luck

1997 C5

I just started researching and the ATI Super Dampner is roughly $450.00 - $500.00 that's too much imo. Mine is chirping coming from ac belt system. I replaced the serpentine belt idler pulley that didn't solve the problem. I started up the car w/o serpentine belt and the chirping is still there constantly there so it has to be either a/c belt, a/c belt tensioner, a/c idler pulley and lastly a/c compressor. I have new a/c belt so this weekend I'm going to take the serpentine belt and a/c belt off and spin the a/c idler pulley, belt tensioner and see and replace the a/c belt then start up the car see still making chirping noise b/4 I replace harmonic balancer. But for piece of mind I may still replace the harmonic balancer.

Smoken1

Alot of people use this for a stock replacement
https://www.summitracing.com/parts/pbb-pb1117n

emptnest

1997 C5

I saw the power band Smoken 1 link. Can you tell me what the difference is from that one to the oem one is?

Did you go with oem bolt?

emptnest

493lszosix

pjdbm

I did the Powerbond $75.00, ARP bolt and new seal, two O rings on the power steering lines.

93Polo

I would do the ARP bolt as well, ATI is considered the best balancer but I understand that many don't push their cars as hard or plan on doing mods and they may consider it overkill.

I do recommend the ARP bolt as I am not a fan of torque to yield bolts. If you go ARP make sure whoever installs it follows ARP's procedure.

JerriVette

This thread convinced me to contact my tech and make an appointment to have the summit racing harmonic balancer installed ..

Not sure which brand that involves but if my guys says that's what I should use..then that's what I'm doing.

That stupid chirping noise for the first five or ten minutes I thought wouldn't bother me but after reading your post on your c5 today I decided..I might as well go for it.

Thanks...and best of luck...and I agree the five hundred dollar ATI is an overkill.

1997 C5

Ok thanks, I will go with power band $74.00 one and ARP bolt. The seal is it called timing cover seal? Summit racing listed round seal called it timing cover seal. Isn't harmonic balancer

mounted on the crackshaft and the seal is on the front of crack shaft right? Sorry for dumb question but i'm new to this kinda stuff. I'm learning as I go.

onspeed

Powerbond 25% underdrive if you don't think you'll ever supercharge.

Powerbond stock replacement + pin if you might down the line.

pjdbm

1997 C5

OK I looked at the engine/crank shaft/ cam shaft diagram. The cranck shaft has no seal at front right?
Do I have to replace the timing cover gasket since that has to come off to replace the timing cover seal( timing cover seal more like cam shaft seal ) ?

oharal

Powerbond with ARP bolt here.

pjdbm

After you remove the HB, you will see this, that black seal gets pulled out without removing timing chain cover

1997 C5

Thank you so much for your speedy response.

pjdbm

I couldn't find the perfect pic, I did not take many when I did it but to be clear
You dont need to remove that timing chain cover and any pick/small screw driver would work, I just elected to buy a $7.00 seal removal tool. Comes off easy and the new one goes on easy,

1997 C5

That photo says it all. Thank you!