harmonic balancer timing mark

triracer67 · Apr 10, 2012

My 302 harmonic balancer only has one timing mark? I've cleaned it a few times, no degree marks are apparent. Is this mark TDC, or 6 degrees? I have a photo, but can't upload.

blubuckaroo · Apr 10, 2012

Why not treat the car to a new one? If it is that old it will end up coming apart on you anyway. I've had it happen on a road trip. No damage done but it was pretty noisy.

nrramse · Apr 10, 2012

blubuckaroo said:
Why not treat the car to a new one? If it is that old it will end up coming apart on you anyway. I've had it happen on a road trip. No damage done but it was pretty noisy.

x2. My brother lost a good radiator on his Cutlass because the dampner flew into it.

lillsteve · Apr 10, 2012

X3. If you have it apart now is the time to replace your harmonic balancer as they are becoming harder to locate and can cause you a real headache when they fail. I just had to order my new harmonic balancer for my 302 and it took a week to arrive, I would hate to have been waiting on the side of the road.

Stroppe-Envy-77 · Apr 10, 2012

triracer67 said:
My 302 harmonic balancer only has one timing mark? I've cleaned it a few times, no degree marks are apparent. Is this mark TDC, or 6 degrees? I have a photo, but can't upload.

You might actually be looking at a notch that's in the balancer, but is NOT a timing mark. The marks are about 90 degrees or so from where that notch is.

gearida · Apr 11, 2012

Find TDC and mark your pulley. But I agree, if it is old and the rubber is shot, then the weight can spin or come off. So as said probably worth the money to replace.

gr8scott · Apr 11, 2012

lillsteve said:
X3. If you have it apart now is the time to replace your harmonic balancer as they are becoming harder to locate and can cause you a real headache when they fail. I just had to order my new harmonic balancer for my 302 and it took a week to arrive, I would hate to have been waiting on the side of the road.

You must be thinking of something else. Harmonic balancers are plentiful and arrive in a couple of days.
http://www.summitracing.com/search/...O/Engine-Size/5-0L-302/Year/1974/?Ns=Rank|Asc

Steve83 · Apr 12, 2012

With everything else installed normally, pull the #1 plug & drop a plastic drinking straw into the hole so you can watch the piston's movement as you turn the crank by the HB bolt. When the straw stops rising, back the HB off and approach it again slowly to get it at the EXACT TDC, then make a mark on your HB where the 0 pointer is. If it's not where the factory mark was, replace the HB.

harmonic balancer timing mark

triracer67

Sr. Member

blubuckaroo

Grease Monkey

nrramse

Sr. Member

lillsteve

Jr. Member

Stroppe-Envy-77

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gearida

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gr8scott

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Steve83

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