Half-shaft U/J Fitting - Grease?
Thread Starter
Burning Brakes
Joined: Jan 2001
Posts: 1,219
Likes: 448
From: Loir Valley Sarthe, France
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Half-shaft U/J Fitting - Grease?
Hi
I have never read anything to suggest it, but I wondered if anyone ever ads a smear of grease to U/J cups before they press them into the shafts or flange?
I ask because the U/Js I am removing are “blued”, but the new ones are untreated and I was concerned about possible rust! So I was wondering about copper grease??
I have never read anything to suggest it, but I wondered if anyone ever ads a smear of grease to U/J cups before they press them into the shafts or flange?
I ask because the U/Js I am removing are “blued”, but the new ones are untreated and I was concerned about possible rust! So I was wondering about copper grease??
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Hi
I have never read anything to suggest it, but I wondered if anyone ever ads a smear of grease to U/J cups before they press them into the shafts or flange?
I ask because the U/Js I am removing are “blued”, but the new ones are untreated and I was concerned about possible rust! So I was wondering about copper grease??
I have never read anything to suggest it, but I wondered if anyone ever ads a smear of grease to U/J cups before they press them into the shafts or flange?
I ask because the U/Js I am removing are “blued”, but the new ones are untreated and I was concerned about possible rust! So I was wondering about copper grease??
Don't waste your time with the grease. It'll get wiped clean when pressed into the yoke.
Thread Starter
Burning Brakes
Joined: Jan 2001
Posts: 1,219
Likes: 448
From: Loir Valley Sarthe, France
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
Le Mans Master
Joined: Jan 2006
Posts: 6,506
Likes: 139
From: Butler Pa
Thread Starter
Burning Brakes
Joined: Jan 2001
Posts: 1,219
Likes: 448
From: Loir Valley Sarthe, France
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
I'm using U/Js with grease zerks. (yes I know, I'll wait for all the reasons why these are bad
) There is some grease in the cups, but I will be adding grease when they are installed. But it seems like greasing the outside of the cups is a "no-no" then.
In reality, our car is more about "cruising" than rubber burning, so I have no worries about the strength, or lack of, of the greasable U/Js.
) There is some grease in the cups, but I will be adding grease when they are installed. But it seems like greasing the outside of the cups is a "no-no" then.In reality, our car is more about "cruising" than rubber burning, so I have no worries about the strength, or lack of, of the greasable U/Js.
Race Director
Joined: Apr 2009
Posts: 19,294
Likes: 2,754
From: Charlotte NC
The grease I use is made for use in universal joints. And not that I will EVER use them...but if a universal joint has a grease fitting...and it is being re-greased....just like tie-rod ends and ball joints...as long as the grease is approved for those applications....it really does not matter if you 'blend' them.
YES there is grease in the caps...but you do as many universal joints as I have ...you will learn to apply a thin layer to keep the pins aligned and stay put. Because that super transparent layer that you can see when you remove the cap is not enough and a pin can fall down and then you are screwed. I have been there so many times...that I do what I have mentioned.
A person can use whatever method they feel works for them the best. I am not here to judge...I am passing along what I do.
I will write that I use solid SPICER universal joints. NO grease fittings.
DUB
YES there is grease in the caps...but you do as many universal joints as I have ...you will learn to apply a thin layer to keep the pins aligned and stay put. Because that super transparent layer that you can see when you remove the cap is not enough and a pin can fall down and then you are screwed. I have been there so many times...that I do what I have mentioned.
A person can use whatever method they feel works for them the best. I am not here to judge...I am passing along what I do.
I will write that I use solid SPICER universal joints. NO grease fittings.
DUB
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