U joint lubing
Le Mans Master
Joined: Dec 2007
Posts: 8,000
Likes: 659
From: Puget Sound
Melting Slicks
Joined: Apr 2005
Posts: 2,777
Likes: 105
Same here - 25 years w/zerks in stout big block - no issues! 
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,915
From: Washington Michigan
Here are a couple of examples of U-joint/half-shaft durability that are interesting; the top photo is a brand-new pair of half-shafts with Spicer U-joints after several full-throttle blasts with a very stout L-89 on stock tires (note the twisting, just short of failure), and the bottom photo is from a 540 Merlin on slicks.
Thread Starter
Drifting
Joined: Oct 2008
Posts: 1,901
Likes: 10
From: Woodstock GA
Here are a couple of examples of U-joint/half-shaft durability that are interesting; the top photo is a brand-new pair of half-shafts with Spicer U-joints after several full-throttle blasts with a very stout L-89 on stock tires (note the twisting, just short of failure), and the bottom photo is from a 540 Merlin on slicks.
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,028
From: eastern NC
The last time I ordered a set of U-joints for my '73, the joints came with a hole in one of the caps and had a plug installed. Each had a zerk fitting in a small plastic bag as well. After installing them, I removed the plug and installed a zerk and shot a bit of grease in each. I then removed the zerk and reinstalled the plug. It certainly makes getting to the zerk (when installed) easy once a year or so.
By the way, phasing U-joints was one of the early lessons my Dad taught me back in the day, been doing it ever since.
Good luck... GUSTO
By the way, phasing U-joints was one of the early lessons my Dad taught me back in the day, been doing it ever since.
Good luck... GUSTO
Le Mans Master
Joined: Feb 2008
Posts: 6,429
Likes: 1,854
From: Folsom CA
Good Joints
Spicer
Precision Super Strength, Super Strength is optional to the standard joints offered.
Neapco
These are the three basic manufacturers of Ujoints I am aware of.
These three supply almost all OE Ujoints and all reboxed Ujoints, Carquest, Napa etc. I am sure Spicer and Neapco also offer the super strength ujoints but I know the Precision brand offers them.
Most OEM Ujoints are not greaseable and last 100,000 miles so I would not stress over greaseable or not in one of these cars for longevety.
You may have to wait a couple days to order in the Super Strength design if that is your choice. Standard design Ujoints would be on the shelf of most part stores.
Precision Super Strength, Super Strength is optional to the standard joints offered.
Neapco
These are the three basic manufacturers of Ujoints I am aware of.
These three supply almost all OE Ujoints and all reboxed Ujoints, Carquest, Napa etc. I am sure Spicer and Neapco also offer the super strength ujoints but I know the Precision brand offers them.
Most OEM Ujoints are not greaseable and last 100,000 miles so I would not stress over greaseable or not in one of these cars for longevety.
You may have to wait a couple days to order in the Super Strength design if that is your choice. Standard design Ujoints would be on the shelf of most part stores.
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Pro
Joined: Mar 2005
Posts: 554
Likes: 0
From: ny
The grease fitting should be between the driveshaft or halfshaft first (as it is rotated in normal forward direction), then the grease fitting, then the output (pinion or stub axle). This is so that the grease fitting (hole - the weaken area) is under compression.
Don't have the grease fitting between the output first, and then the input. That puts the hole in tension and can fail at the hole.
Plasticman
Don't have the grease fitting between the output first, and then the input. That puts the hole in tension and can fail at the hole.
Plasticman
Melting Slicks
Joined: Apr 2008
Posts: 2,702
Likes: 166
From: Western Washington
http://www.corvettemagazine.com/tran...placement.html
Enlarge photo 14. When looking at the photo if the driveline turns clockwise it will compress the fitting and is correct. If the driveline turns counterclockwise it will pull the area of he fitting.
Enlarge photo 14. When looking at the photo if the driveline turns clockwise it will compress the fitting and is correct. If the driveline turns counterclockwise it will pull the area of he fitting.
