Harmonic Balancer Replaced, Still Has some play

Tech discussions on the L77 6.0L V8.
lastcall190
Posts: 200
Joined: Mon Sep 11, 2017 10:17 am
Location: North Jersey

Re: Harmonic Balancer Replaced, Still Has some play

Post by lastcall190 » Tue Jul 17, 2018 1:16 pm

Then I stand corrected.
2012 Caprice
DOD Delete, LS9 Cam, Pat G tune, Magnaflow G8 Exhaust

2008 CVPI
163k miles and counting

Tech56
Posts: 11
Joined: Sun Jun 17, 2018 3:10 am

Re: Harmonic Balancer Replaced, Still Has some play

Post by Tech56 » Wed Jul 18, 2018 12:04 am

That is just my particular instance though. I agree a new pulley shouldn't wobble but I believe the GM publication states that it may appear that the pulley is wobbling even though it's in "spec"

I remember thinking to myself right after I put the new pulley on wow that looks great. Then I check it like a week later and it looks wobbly again. Rechecked the bolt and it was good. I did not use the bolt to pull the new one on either, the $20 tool from amazon works fine.

chipperdoodles
Posts: 11
Joined: Thu Jul 12, 2018 7:12 pm

Re: Harmonic Balancer Replaced, Still Has some play

Post by chipperdoodles » Wed Sep 05, 2018 4:48 pm

Finally ordered a replacement and the right tools. I took a gamble and got a summit racing balancer for ls2 applications. If the fitment isn't right i'll just return it but I didn't want to buy another dayco and the price of this one (189) was dang good for an sfi rated balancerd. The only thing between that was the dayco one for 220 and then an ati one for about 400$. I'll keep things posted here just to let you guys know what's up!

chipperdoodles
Posts: 11
Joined: Thu Jul 12, 2018 7:12 pm

Re: Harmonic Balancer Replaced, Still Has some play

Post by chipperdoodles » Fri Sep 14, 2018 6:22 pm

Right tools, nicer balancer mich easier this time. I didnt even have to remove the radiator fan. threw in some new spark plug wires while i was at it.
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CrashTestDummy
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Joined: Sat Feb 07, 2015 8:31 pm
Location: Pearland, Texas

Re: Harmonic Balancer Replaced, Still Has some play

Post by CrashTestDummy » Fri Sep 14, 2018 6:33 pm

That's purdy! Is it steel or aluminum? Have a part number for that new unit?
Gene Beaird,
Pearland, Texas
2012 Caprice 9C1
1992 B4C 1LE Camaro
2010 Tahoe PPV (her car)
1995 DGGM Impala SS
1996 BBB Impala SS (11-second DD)
1985 Firebird - 310 LS1 C Prepared autocross car.
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chipperdoodles
Posts: 11
Joined: Thu Jul 12, 2018 7:12 pm

Re: Harmonic Balancer Replaced, Still Has some play

Post by chipperdoodles » Fri Sep 14, 2018 6:53 pm

CrashTestDummy wrote:That's purdy! Is it steel or aluminum? Have a part number for that new unit?
Is Steel, I got it from summit racing.

https://www.summitracing.com/parts/sum-c2501

It's an 8 rib front (i just made sure the 6 rib belt was on the front 6 ribs), 4 rib accessory, our car wasn't listed under fitments but the engine is so i took a gamble. It's probably the cheapest sfi rated balancer out there too (at least that i could find). It's got a slot for a key too if you want to pin your crank or have an aftermarket one which is nice for future upgrades. Not that I have the money for that lol!

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