Harmonic Balancer problem - The 1947 - Present Chevrolet & GMC Truck Message Board Network

skokie · 07-15-2007, 07:13 PM

Well I thought I had snagged the right balancer and I did but I forgot to compare the old and the new. On the old balancer the keyway slot and the timing mark are almost lined up. On the new balancer the timing mar is at about 10 degrees. Besides swapping the balancer is there another way to fix this?

Thanks

jhow66 · 07-15-2007, 07:44 PM

Get you a bolt on timing tab for that year balancer.

skokie · 07-15-2007, 08:25 PM

What postion would I need to put it in? The current one is at 2 o clock.

piecesparts · 07-15-2007, 09:07 PM

I woud turn the engine over to TDC on #1 cylinder and see where the pointer needs to be.

**70C10Toejam** · 07-15-2007, 10:23 PM

At some time, GM moved the keyway on the crankshaft, creating your (and my)situation with new balancers on old engines, (or old balancers on new engines. I have a Goodwrench 350 in my truck, put in by a previous owner. The original balancer was then remarked with a new timing mark. It lines up with 0 at TDC.

jhow66 · 07-15-2007, 11:31 PM

Quote:

Originally Posted by 70C10Toejam

At some time, GM moved the keyway on the crankshaft, creating your (and my)situation with new balancers on old engines, (or old balancers on new engines. I have a Goodwrench 350 in my truck, put in by a previous owner. The original balancer was then remarked with a new timing mark. It lines up with 0 at TDC.

Good idea here-easier also.

skokie · 07-16-2007, 01:46 AM

Quote:

Originally Posted by 70C10Toejam

At some time, GM moved the keyway on the crankshaft, creating your (and my)situation with new balancers on old engines, (or old balancers on new engines. I have a Goodwrench 350 in my truck, put in by a previous owner. The original balancer was then remarked with a new timing mark. It lines up with 0 at TDC.

Yep that is what I was thinking about doing. Something else that I found out tonight when looking at the balancers up at summit racing. I found that the 8 inch balancer would line up with my motor assuming that the picture is correct

After work tomorrow I will head out and get it to TDC then create a new mark.

Thanks

07-15-2007, 07:44 PM	#2
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Re: Harmonic Balancer problem Get you a bolt on timing tab for that year balancer. __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer

07-15-2007, 08:25 PM	#3
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,354	Re: Harmonic Balancer problem What postion would I need to put it in? The current one is at 2 o clock. __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234

07-15-2007, 09:07 PM	#4
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Re: Harmonic Balancer problem I woud turn the engine over to TDC on #1 cylinder and see where the pointer needs to be.

07-15-2007, 10:23 PM	#5
70C10Toejam Hellasick Join Date: Jul 2006 Location: Death Moans, IA Posts: 876	Re: Harmonic Balancer problem At some time, GM moved the keyway on the crankshaft, creating your (and my)situation with new balancers on old engines, (or old balancers on new engines. I have a Goodwrench 350 in my truck, put in by a previous owner. The original balancer was then remarked with a new timing mark. It lines up with 0 at TDC. __________________ I keep two MAGNUMS in my desk. One's a gun, and I keep it loaded. The other's a bottle and it keeps ME loaded. I'm Tracer Bullet. (Calvin and Hobbes) This life was a test. It was only a test. If this had been an actual life, you would have received instructions on where to go and what to do. RED meat is not bad for you...FUZZY BLUE/GREEN MEAT is bad for you!!!!!!!!!!!!! BUILT FORD TOUGH WITH CHEVY STUFF--sticker at Goodguys

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07-15-2007, 07:13 PM	#1
skokie Registered User Join Date: Oct 2003 Location: San Jose Ca. Posts: 3,354	Harmonic Balancer problem Well I thought I had snagged the right balancer and I did but I forgot to compare the old and the new. On the old balancer the keyway slot and the timing mark are almost lined up. On the new balancer the timing mar is at about 10 degrees. Besides swapping the balancer is there another way to fix this? Thanks __________________ RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234



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