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#1 |
Tasty Cakes!
Join Date: Apr 2003
Location: Gilbert, AZ
Posts: 2,112
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Which Universal Joints?
Was looking at the Napa website, and they have greaseable and non-greaseable U-joints. Which ones do I want? Are the non-greaseable ones made w/some sort of space-age lube so they don't ever go dry? Or are they for lazy people that aren't ever going to grease them anyway?
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I'm a little ![]() ![]() Ground beef: A cow with no legs. ---------------- '66 Chevy SWB "Penny" '67 Chevy Big Window SWB- aka "Pearl" '72 Burb- "Betty" "It's not a hearse dammit" '99 Chevy Ext. cab Silverado |
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#2 |
Chevy Truck Addict
![]() Join Date: Aug 2006
Location: Kelowna, BC
Posts: 1,176
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Re: Which Universal Joints?
I'd go with greasable... Anything you can lube should last longer, shouldn't it? I would also go with the higher quality, or heavier duty u-joints... I had a buddy with an '80 K-10 who was going through u-joints way faster than he should... Bought a Spicer product and hasn't replaced it since.
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. 1970 Chev C/10 SWB, 355 SBC, 700R4, 3.73 Posi, Air Ride (Click to view Build Thread) (SOLD) 1978 Chevy C/10 SWB 1970 Pontiac Lemans . |
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#3 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: Which Universal Joints?
3 reasons I prefer a sealed U-joint;
1. A sealed U-joint will be stronger than one with a hole for a zerk fitting. 2. If stock U joints without a zerk last 100,000 miles (which they usually do) then it'd good enough for my junk. 3. I'm lazy and don't like the messy grease gun. |
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#4 |
Senior Member
![]() Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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Re: Which Universal Joints?
If you have to install a u-joint with a grease fitting hole in its casting, install the u-joint so the driveshaft torque pushes the hole shut, rather than trying to pull it apart. Takes a little head scratching to get it right. The grease hole is the weak spot in the casting.
No grease holes should be stronger and they really don't need much grease, so non greaseable is better, but harder to find around here anyway. Napa and likey others have a greaseable HD u-joint that has a needle grease fitting in one of the caps ends, the joint is still cross-drilled but does not have the hole in the middle for the zerk that makes it weak. Below is an example. http://www.napaonline.com/MasterPage...t+Transmission
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 Last edited by Green Machine; 09-06-2008 at 10:54 PM. |
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#5 |
Registered User
![]() Join Date: Jul 2007
Location: Toppenish, WA
Posts: 15,514
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Re: Which Universal Joints?
Unless you are racing or running a serious 4x4 I would believe that the strength thing is a non issue. I've been working on cars and trucks for 46 years and have never seen a u-joint fail through the zerk hole except on the drag strip in a vehicle that was running a lot of horsepower and slicks.
The three reasons that I have seen most U joints fail is that they are run at and excessive angle, lack of lubrication and the third is that the cheap ones with the fatter rollers in the cups (the correct name slips my mind at the moment) tend to fail quicker than the spicer type with the thin rollers. That excludes racing and dairy farm employee abuse as all bets are off then. If I were building a rig for racing or serious off road use I would run the high performance U-joints w/o zerks though. Last edited by mr48chev; 09-06-2008 at 11:06 PM. |
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#6 |
Tasty Cakes!
Join Date: Apr 2003
Location: Gilbert, AZ
Posts: 2,112
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Re: Which Universal Joints?
Ok, now I'm more confused than I was before. This must be like a Ford vs. Chevy debate. LOL I take it that either will work and which ever ones I get my hands on will be fine, as long as they aren't the cheapy ones....
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I'm a little ![]() ![]() Ground beef: A cow with no legs. ---------------- '66 Chevy SWB "Penny" '67 Chevy Big Window SWB- aka "Pearl" '72 Burb- "Betty" "It's not a hearse dammit" '99 Chevy Ext. cab Silverado |
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