1970 U-joints

[Alan S.]

Re: 1970 U-joints

H Stephen,
I'm sorry, I don't have a picture. My camera situation is horrible right now.
I'm sure the u-joints left St. Louis on the drive shaft.
The end of the bearing cap has a VERY shallow recess in the center. It starts about 1/8" in from the perimeter of the cap. Again... it's VERY shallow.
Around the perimeter of the recess it says SPICER around the top, and USA around the bottom, with no periods for the initials, and in the center is P621. These letters and numbers are raised... not stamped. (In this case a picture would have been worth 65 words!)
I hope this helps, if I can look any more please just let me know.
Regards,
Alan

[Stephen B.]

Re: 1970 U-joints

Thanks Alan

[Alan S.]

Re: 1970 U-joints

Greg-----


Several things. The apparent size of the bearing caps, the apparent width of the fingers, the "depressions" in the center of the body of the joint, and the fact that they have "Spicer" on the end caps.

Hi Joe,
Where the 'fingers' typically exposed as in Greg's picture or were they sometimes covered with the 'rubber'? seal that you see between the fingers? Did it vary with application ?
Thanks very much!
Regards,
Alan

[Joe L.]

Re: 1970 U-joints

Hi Joe,
Where the 'fingers' typically exposed as in Greg's picture or were they sometimes covered with the 'rubber'? seal that you see between the fingers? Did it vary with application ?
Thanks very much!
Regards,
Alan

Alan-----


I'm not sure I know exactly what you mean. However, the seals seen on the u-joints in Greg's pictures are typical of the seals used for all Corvette u-joints of the 63-82 period. Just how much of the finger that is "exposed" depends upon the width and overall size of the particular u-joint. For example, the u-joints in Greg's photos are a 1330 series u-joint. These have a wider diameter than, for example, the 1280/1310 series u-joints used for all 53-67 and all 68-70 with manual transmission applications. So, for the latter, it may appear that more of the finger is covered by the seal simply because the fingers are shorter.

[Alan S.]

Re: 1970 U-joints

Hi Joe,
I guess I'm not sure about what the finger is.
I'm looking at the rubber ring covering the SS that the 4 caps butt up against when you push the cap on. You can see the silver (SS ?) intermittently between the black rubber. I thought that's what you meant by finger.
The u-joints on my 71 are solid black rubber between the cap and the body of the u-joint. I guess the SS is underneath?
Thanks Again!!!
Regards,
Alan

EVERY time I see your posts I think of LOBSTER!

[Joe L.]

Re: 1970 U-joints

Hi Joe,
I guess I'm not sure about what the finger is.
I'm looking at the rubber ring covering the SS that the 4 caps butt up against when you push the cap on. You can see the silver (SS ?) intermittently between the black rubber. I thought that's what you meant by finger.
The u-joints on my 71 are solid black rubber between the cap and the body of the u-joint. I guess the SS is underneath?
Thanks Again!!!
Regards,
Alan

EVERY time I see your posts I think of LOBSTER!

Alan-----


There's no stainless steel on any of these u-joints. I think what you're referring to is the machined steel bearing CAP. This is the cup-like CAP which contains the roller bearings and fits over the trunnion. The seal fits onto a machined area of the cap. The fit of the seal differs a bit between u-joints. In some cases it fits in such a way that base of the machined area on which the seal fits cannot be seen. Other times, such as is the case of the joint in Greg's photos, there is a small amount of the base of the machined area visible. I don't know why the difference, but I've often observed it.

[Alan S.]

Re: 1970 U-joints

Thanks Joe.
It's the difference in the SEAL that I was seeing.
Again, thanks for your patience.
Regards,
Alan