Balancer wobble question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

evilways · 02-20-2010, 07:07 PM

Can this type balancers go bad? Mine has a little shimmy to it, and now my crank pulley is chattering on the water pump pulley.

cdowns · 02-20-2010, 07:15 PM

yes they can go bad //was common in the 80's autoparts stores used to have a kit to repair the damage to the crank a wobbler balancer caused

evilways · 02-20-2010, 07:23 PM

Now will a worn balancer cause the pulleys to wobble too?

71swb4x4 · 02-20-2010, 07:30 PM

It can mess up the crank if you run it like that. Replace it before you run the engine any more.

evilways · 02-20-2010, 08:10 PM

Were the old cast crank pulleys prone to wobble? I want to get everything smoothed out down there, and this is the only pulley I have found that lines up with my PS pump.

ole red · 02-20-2010, 09:23 PM

I had one that the rubber started going out and it made it viberated and shook, sure made a differance with a new one that cost about $50.00

GASoline71 · 02-21-2010, 12:18 AM

Quote:

Originally Posted by 71swb4x4

It can mess up the crank if you run it like that. Replace it before you run the engine any more.

Yup... if it has been run for some time like that... damage has prolly already been done.

It's not uncommon for those old 2 piece dampners to have the rubber go bad. Causing the ring to slip, or in severe cases... wobble.

I would say this is a severe case. I've never seen one wobble that far off of the hub before.

Gary

hayhauler71 · 02-20-2010, 10:55 PM

Whats up with the bolts on the lower pulley in your pic.

evilways · 02-20-2010, 10:59 PM

The center bolt is going through all the pulleys to hold the balancer, as it would not seat on the balancer without affecting the pulleys. The black pulleys hole is not big enough for a washer to set in the middle of it.

**mr48chev** · 02-20-2010, 11:20 PM

I think he means, the odd ball bolts and all the mismatched washers behind them.

Is the damper it's self wobbling or is the pully setup you have doing the wobbling.

evilways · 02-21-2010, 01:22 PM

Quote:

Originally Posted by mr48chev

I think he means, the odd ball bolts and all the mismatched washers behind them.

Is the damper it's self wobbling or is the pully setup you have doing the wobbling.

Not a single odd ball washer nut on it, all three bolts for the pulleys (1flat, 1lock, all same thickness) and the center bolt is for the crank, it looks as though they are mismatch, but they are not. I wasn't sure if using the lock washer was needed, but I used them anyway.

The damper has a slight wobble to it, but the pulleys seem to wobble more, that was my main concern, since I used a cast pulley from a 327 engine, it was the only pulley I could get to line up my power steer.

evilways · 02-21-2010, 01:27 PM

Here is a top pic. the damper is flush with the rear of the unit.

Leviticus · 02-21-2010, 02:04 PM

Quote:

Originally Posted by evilways

Here is a top pic. the damper is flush with the rear of the unit.

If I am seeing that pic right, it looks like the rubber dampening material between the hub and outer ring is squeezing out, this = bad news.

I would not drive that thing anywhere until you get that changed out, as stated above.

The pulley is mounted to the center hub of the balancer and shouldn't wobble, even if the material is shot. You might just be seeing the general wobble from the balancer being bad, but I would put a new crank pulley on when you do the balancer, just to be safe.

Good luck, keep us posted.

evilways · 02-21-2010, 02:19 PM

Going to place an order for a new balancer, and I am trying to upload a vid for viewing pleasure, if I can get it to load.

Leviticus · 02-27-2010, 06:52 PM

Glad you got her fixed up, its a good thing you caught it early. Now go enjoy your truck!

02-20-2010, 07:07 PM	#1
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Balancer wobble question Can this type balancers go bad? Mine has a little shimmy to it, and now my crank pulley is chattering on the water pump pulley. Attached Images __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project

02-20-2010, 07:15 PM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Balancer wobble question yes they can go bad //was common in the 80's autoparts stores used to have a kit to repair the damage to the crank a wobbler balancer caused __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

02-20-2010, 07:23 PM	#3
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Re: Balancer wobble question Now will a worn balancer cause the pulleys to wobble too? __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project

02-20-2010, 07:30 PM	#4
71swb4x4 Senior Member Join Date: Nov 2003 Location: Brookings, SD Posts: 10,497	Re: Balancer wobble question It can mess up the crank if you run it like that. Replace it before you run the engine any more. __________________ Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs.

02-20-2010, 08:10 PM	#5
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Re: Balancer wobble question Were the old cast crank pulleys prone to wobble? I want to get everything smoothed out down there, and this is the only pulley I have found that lines up with my PS pump. __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project

02-20-2010, 09:23 PM	#6
ole red Registered User Join Date: Sep 2000 Location: C-WY Posts: 236	Re: Balancer wobble question I had one that the rubber started going out and it made it viberated and shook, sure made a differance with a new one that cost about $50.00 __________________ 69 stepside, 1/2ton, 4X4, 350/350/205

02-20-2010, 10:55 PM	#8
hayhauler71 Registered User Join Date: Aug 2009 Location: St. Paul MN. Posts: 1,996	Re: Balancer wobble question Whats up with the bolts on the lower pulley in your pic.

02-20-2010, 10:59 PM	#9
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Re: Balancer wobble question The center bolt is going through all the pulleys to hold the balancer, as it would not seat on the balancer without affecting the pulleys. The black pulleys hole is not big enough for a washer to set in the middle of it. __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project Last edited by evilways; 02-20-2010 at 11:07 PM.

02-20-2010, 11:20 PM	#10
mr48chev Registered User Join Date: Jul 2007 Location: Toppenish, WA Posts: 15,640	Re: Balancer wobble question I think he means, the odd ball bolts and all the mismatched washers behind them. Is the damper it's self wobbling or is the pully setup you have doing the wobbling.

02-21-2010, 01:27 PM	#12
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Re: Balancer wobble question Here is a top pic. the damper is flush with the rear of the unit. Attached Images __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project

02-21-2010, 02:19 PM	#14
evilways Registered User Join Date: Mar 2008 Location: Lafayette, IN Posts: 226	Re: Balancer wobble question Going to place an order for a new balancer, and I am trying to upload a vid for viewing pleasure, if I can get it to load. __________________ Mark 1967 C/10 stepside lwb daily driver 1968 C/10 fleetside lwb parts truck 1971 Cheyenne Super swb project

02-27-2010, 06:52 PM	#15
Leviticus Shake and Bake! Join Date: Feb 2010 Location: Central Coast, CA Posts: 609	Re: Balancer wobble question Glad you got her fixed up, its a good thing you caught it early. Now go enjoy your truck! __________________ "All tyranny needs to gain a foothold is for people of good conscience to remain silent." Thomas Jefferson "You are remembered for the rules you break." General Douglas MacArthur "Support Our Troops And The NRA"

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