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View Full Version : Flanged 9" Yoke ?


SHINTON
09-06-2005, 11:49 AM
Ok, I have searched for the above term and not seen much on here and wanted to see if we can get some general discussion of the "merits" of this, where you can find them and if it is "worth" it?

My issue has been spitting out the caps on the yoke side of the ujoint, during a waterfall ascent. (Well attempted ascent, heh)

My problem, is the lack of anti-wrap protection and that will prob 'fix' most of my issues, but during this voyage I ran across the flanged yoke and was told they are stronger, etc. I have put some pictures up at webshots under BUG Diff so you can see what I am talking about. (Will also try to upload a picture or two here) [oh yeah, I am adding antiwrap 'ladder' if that wasn't obvious in the above stmt]

Ok...so I bought this flanged yoke from a wheeler who took it off a 9". My guess is it was a Lincoln or possibly a Mustang since every truck axle I have seen has the normal yoke, that you secure the ujoint with Ubolts.

When I attempted to install it on Sat, the spline sizes are different (the flanged yoke is bigger in diameter) so it will not work. IF I can find a source of this style yoke that will work I would prefer to try it...so if anyone has some thoughts on that, I am all ears

[NOTE...it also looks too 'short' and that the spline/bolt would stick too far thru this and interfere with the ujoint? In other words whatever this came off would have a much 'shorter' end on the pinion gear?]

I guess my second question is....is all this worth it? Is securing the ujoint via "snap rings" vs the Ubolt method...really that much better? Is there even one that will fit (tall enough)? Just forget it and just slap in a 4140 alloy yoke?

Ok, looking forward to the comments! EDITED to say, my rear axle is a 1978 Ford Bronco... was regeared by PO to 4.56...and no I wasn't bright enough to measure the diameter of the splines on Sat...sigh

http://community.webshots.com/user/shinton1970

(You may notice that I have chipped a place in my dshaft yoke as well, I am thinking of welding in that area and then grinding in a new groove? Assuming this piece is not cast which I suspect it might be?)

Quick & Dirty
09-06-2005, 02:17 PM
I have a rear from a '76 Lincoln Mark IV that uses that style of yoke. AFAIK, it should be a standard 9" diff, no different from the Bronco one. I don't know what your yoke would have come from to be different, except some Lincolns and Mercs (I thought late 60's) used a "9 3/8" rear, which looks similar, but uses all different parts.

8.8 rears also used a 30 spline flange yoke, vs 28 spline for 9", could be from one of those.

http://www.sandstruck.com/catalog/driveline/flangeyokesfordgmc.htm
The part # from this site shows that 79 to 85 trucks could have come with one.

JEEPRZ
09-06-2005, 02:43 PM
I bet you have an 8.8 yoke.

FWIW, I have seen the flange style on late 70s/ early 80s Ford vans as well. They are not as common as the standard yoke tho

broncman
09-06-2005, 06:19 PM
I had the same problem. then I cured my antiwrap and by that time my yoke was deformed. Spent the money on a GOOD yoke and same joint has been under their for awhile. Even had to replace my driveshaft because I bent it on Lower 2 but did not break the joints... I had much rather have an easily accesible part than a hard to locate part.