Another carrier bearing question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LilJohn72 · 08-13-2016, 02:26 PM

I'm sorry for asking another one of these questions, I've read other threads on the topic and have heard no definitive answer. So I've got a stock suspension, lwb 72 and I've had to replace the carrier bearing twice in about 20,000 miles. I've still got the stock drive shafts and everything. They always break at the mounts on top of the frame with everything else in good shape. Would switching to a billet bearing as opposed to the stock one do me any good or do I have some other problem that is causing me to break the bearings? Thanks for any advice!

Baddflash · 08-13-2016, 03:33 PM

Any chance the driveshaft is out of balance?

Sicklajoie · 08-13-2016, 03:50 PM

This happened 5 years ago to me.

Sicklajoie · 08-13-2016, 03:51 PM

Then I got one from NAPA and this happened 2 years later. Cheap Chinese crap.

Sicklajoie · 08-13-2016, 03:52 PM

So now it's pretty beefed up.

Baddflash · 08-13-2016, 03:54 PM

I would say the driveshaft needs to be balanced, if the orientation of the two shafts was changed when the bearing was replaced it will be out of balance.

firedemon · 08-13-2016, 09:12 PM

that does look like it could be a torque problem and a billet bearing would help then have it balanced just in case worth the expense

LilJohn72 · 08-14-2016, 12:44 AM

I'm not making a lot of torque by any means but since the drive shaft is original to the truck it may be due for a balancing. I know that it still has some of the balancing weights on it and I can't notice that any are missing but it wouldn't hurt to have it balanced since I need to replace the bearing anyway. The problem that sicklajoie was having is the same thing that has happened to me. So should I go ahead and throw some real welds on it for good measure?

Sicklajoie · 08-14-2016, 06:10 AM

Quote:

Originally Posted by LilJohn72

I'm not making a lot of torque by any means but since the drive shaft is original to the truck it may be due for a balancing. I know that it still has some of the balancing weights on it and I can't notice that any are missing but it wouldn't hurt to have it balanced since I need to replace the bearing anyway. The problem that sicklajoie was having is the same thing that has happened to me. So should I go ahead and throw some real welds on it for good measure?

If anything I would beef it up with more welds.

08-13-2016, 02:26 PM	#1
LilJohn72 Registered User Join Date: Nov 2015 Location: Springfield, MO Posts: 23	Another carrier bearing question I'm sorry for asking another one of these questions, I've read other threads on the topic and have heard no definitive answer. So I've got a stock suspension, lwb 72 and I've had to replace the carrier bearing twice in about 20,000 miles. I've still got the stock drive shafts and everything. They always break at the mounts on top of the frame with everything else in good shape. Would switching to a billet bearing as opposed to the stock one do me any good or do I have some other problem that is causing me to break the bearings? Thanks for any advice!

08-13-2016, 03:33 PM	#2
Baddflash Registered User Join Date: May 2015 Location: Edmonton,Alberta, Canada Posts: 103	Re: Another carrier bearing question Any chance the driveshaft is out of balance?

08-13-2016, 03:50 PM	#3
Sicklajoie The Niner Join Date: Nov 2010 Location: Broad Brook, CT Posts: 2,499	Re: Another carrier bearing question This happened 5 years ago to me. Attached Images __________________ "A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/

08-13-2016, 03:51 PM	#4
Sicklajoie The Niner Join Date: Nov 2010 Location: Broad Brook, CT Posts: 2,499	Re: Another carrier bearing question Then I got one from NAPA and this happened 2 years later. Cheap Chinese crap. Attached Images __________________ "A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/

08-13-2016, 03:52 PM	#5
Sicklajoie The Niner Join Date: Nov 2010 Location: Broad Brook, CT Posts: 2,499	Re: Another carrier bearing question So now it's pretty beefed up. Attached Images __________________ "A good racer is one whose head is in communication with his balls." - Richie Evans 1970 C/20 - 402/TH400/3.54s - 74K miles 2003 GMC Sierra 2500 - Wheatland Yellow Niner Progression Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=697183 Classic Trucks article: https://www.motortrend.com/features/...et-c20-driven/

08-13-2016, 03:54 PM	#6
Baddflash Registered User Join Date: May 2015 Location: Edmonton,Alberta, Canada Posts: 103	Re: Another carrier bearing question I would say the driveshaft needs to be balanced, if the orientation of the two shafts was changed when the bearing was replaced it will be out of balance.

08-13-2016, 09:12 PM	#7
firedemon Registered User Join Date: Jun 2015 Location: @ Posts: 890	Re: Another carrier bearing question that does look like it could be a torque problem and a billet bearing would help then have it balanced just in case worth the expense

08-14-2016, 12:44 AM	#8
LilJohn72 Registered User Join Date: Nov 2015 Location: Springfield, MO Posts: 23	Re: Another carrier bearing question I'm not making a lot of torque by any means but since the drive shaft is original to the truck it may be due for a balancing. I know that it still has some of the balancing weights on it and I can't notice that any are missing but it wouldn't hurt to have it balanced since I need to replace the bearing anyway. The problem that sicklajoie was having is the same thing that has happened to me. So should I go ahead and throw some real welds on it for good measure?

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