Harmonic Balancer
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
Harmonic Balancer
I think my balancer has slipped. Do they sell them for a 77 SB at Autozone, Oreilly, NAPA, PepBoys or am I going to have to order one? T
here closed now or else I'd call. If its common to find at an auto parts store, I'll have it off eary in the AM and be waiting on them to open.
Do you think they keep these things in stock for a 77?
Doug
here closed now or else I'd call. If its common to find at an auto parts store, I'll have it off eary in the AM and be waiting on them to open.
Do you think they keep these things in stock for a 77?
Doug
Team Owner
Joined: Aug 2006
Posts: 24,125
Likes: 15
From: Columbia Missouri
I would think so yes. Start at Napa, then Oreilly. If they don't have one call the other places. Oreilly can almost always order something and have it there within a day or two at most.
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
Thanks....I pulled the old one off this morning. Suprised, it hadn't slipped. I had paint on the front when I had installed it (500 miles on rebuild)...and I can tell it was the same.
Now I'm not sure of my problem.
I adjusted my valves yesterday and was going to double check my timing afterwards. I have a dial back light and I couldn't hardly find the balancer mark.
If I tried to adjust to somthing like a 12 degree iniital, it wouldn't even come close to running. It was more like 0. I could adjust the distributor so it would idle and it would run fine but I'd have no idea what my timing really is.
I'm sure my valves aren't too tight. In fact, I was conservative when tightening.
Not sure what to check next?
While my balancer is off, I'm going to put on a new one. This one is 30 years old.
Doug
Now I'm not sure of my problem.
I adjusted my valves yesterday and was going to double check my timing afterwards. I have a dial back light and I couldn't hardly find the balancer mark.
If I tried to adjust to somthing like a 12 degree iniital, it wouldn't even come close to running. It was more like 0. I could adjust the distributor so it would idle and it would run fine but I'd have no idea what my timing really is.
I'm sure my valves aren't too tight. In fact, I was conservative when tightening.
Not sure what to check next?
While my balancer is off, I'm going to put on a new one. This one is 30 years old.
Doug
Thread Starter
Instructor
Joined: Dec 2006
Posts: 207
Likes: 0
From: Keller TX
Turns out it 'was' the harmonic balancer slipping. See the picture of old and new. Notice the key way position vs the timing mark at the top of each. (By the way, I wasn't the one that hammered the old balancer....I use an installer tool).
Posting in case someone else was curious about a slipping balancer.
Doug
Posting in case someone else was curious about a slipping balancer.
Doug
