U Joint Question
I'm not a very good technical writer, but I'll try to convey what I did. Maybe it'll help someone when they search.
One problem is that I don't know what the shaft is from. I took the entire driveline from a D150 Pro Street truck.
I ended up using a combination of 2 Moog 429's and a 7260.
The originals turned out to be 429's. Number is cast into them. Duh. They show as being for early 60's Fords. The 429's are wider overall than the 7260's, but the originals have wider c-clip grooves than the ones I bought to replace them. Thus, the original 429's fit, but the new one's, well, I couldn't get both c-clips in.
I solved the problem on the front by using a 7260. It's caps are 1.062. The holes in the yoke and shaft are 1.078. The caps on the 429 are 1.078 and fit on the 7260. So, I used the 429 caps on the narrower 7260. No problem getting the caps in because the 7260 is narrower. The one thing I don't get is: Why do the 1.078 caps fit the yoke in the trans? I have to figure it's a Mopar yoke, but the 7260's of course, are 1.062, and the other Mopar u-joint is a 7290, which measures 1.125.
I used a 429 in the rear joint. I used 7260 caps where the u joint sits in the yoke. (Ford 9") I couldn't use the 7260 with 429 caps (as in the front joint), because the 7260 joint was too narrow, and wouldn't fit snugly in the pinion yoke. (Between the locating tabs.)
The bugaboo is that I had to use two caps from the original 429's because they have the aforementioned wider c-clip grooves.
So if I ever need a u-joint, I'd have to know where the caps with the wider groove came from. It might be easier to bite the bullet and buy a new shaft if that ever becomes a necessity.
Left to right in pic:
-New 7260 cap.
-New 429 cap. (Marking is from having been installed.)
-Used 429 cap. The one that fits my shaft and has wider grooves than the new 429 cap.
I'm not a very good technical writer, but I'll try to convey what I did. Maybe it'll help someone when they search.
One problem is that I don't know what the shaft is from. I took the entire driveline from a D150 Pro Street truck.
I ended up using a combination of 2 Moog 429's and a 7260.
The originals turned out to be 429's. Number is cast into them. Duh. They show as being for early 60's Fords. The 429's are wider overall than the 7260's, but the originals have wider c-clip grooves than the ones I bought to replace them. Thus, the original 429's fit, but the new one's, well, I couldn't get both c-clips in.
I solved the problem on the front by using a 7260. It's caps are 1.062. The holes in the yoke and shaft are 1.078. The caps on the 429 are 1.078 and fit on the 7260. So, I used the 429 caps on the narrower 7260. No problem getting the caps in because the 7260 is narrower. The one thing I don't get is: Why do the 1.078 caps fit the yoke in the trans? I have to figure it's a Mopar yoke, but the 7260's of course, are 1.062, and the other Mopar u-joint is a 7290, which measures 1.125.
I used a 429 in the rear joint. I used 7260 caps where the u joint sits in the yoke. (Ford 9") I couldn't use the 7260 with 429 caps (as in the front joint), because the 7260 joint was too narrow, and wouldn't fit snugly in the pinion yoke. (Between the locating tabs.)
The bugaboo is that I had to use two caps from the original 429's because they have the aforementioned wider c-clip grooves.
So if I ever need a u-joint, I'd have to know where the caps with the wider groove came from. It might be easier to bite the bullet and buy a new shaft if that ever becomes a necessity.
Left to right in pic:
-New 7260 cap.
-New 429 cap. (Marking is from having been installed.)
-Used 429 cap. The one that fits my shaft and has wider grooves than the new 429 cap.
