Spicer Driveshaft initial impression and long term review.

[MattCO4x4]

Here are pictures from a couple of the failures at the tcase side. No vibration, noises or signs when it lets loose. One pic is of a bolt the dealership snapped off during replacement #2.

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[87-Z28]

Might need a different joint for the 2Ds. Seems to be the boot starts to struggle much after 15+ degrees. Especially if you are pushing it hard, lots of articulation and motion near full rebound/extension.

disappointing by ford. Not hard to test and evaluate at expected angle limits. Everything from ford design seems to be right at the bleeding limits. Seems like the 2Ds may have been a bit of an afterthought. Wondering if spicer boots have been tested any better. Especially for lifted 2Ds.

 

[Valhalla]

I still have my bad one my dealer refused to warranty. The second dealer offered to sell me a new one at cost, so I bought it and have it sitting in the box atm. I could send ya the old one after I change it? If your guys come up w/something tell them I want one too, and have them ship it to me? Was waiting till spring to change it, or till it started making noise

That would be awesome! PM me.

 

[BigMeatsBronco]

Some updated shaft angles. For near SAS geometry. 2 door in yellow and 4 door in red. Assumes 2 door shaft is 35” long (don’t have one to measure just scaled wheelbase). Dashed lines for increased angles from a 2” spacer lift or effective shock length increase. Redrilling lower mount up 2” does same lift. Springs and preload will just move equilibrium ride height angle. 0 point for pinion motion.

the 4 door caps out at full droop from 12-14 degrees. 2 door at 17-20 degrees. Plus or minus 1 degree or so. 17 degrees on unmodified SAS 2 door doesn’t seem that high. It’s hard to get the 4 door angles excessive.

This is very accurate.

 

[BigMeatsBronco]

Might need a different joint for the 2Ds. Seems to be the boot starts to struggle much after 15+ degrees. Especially if you are pushing it hard, lots of articulation and motion near full rebound/extension.

disappointing by ford. Not hard to test and evaluate at expected angle limits. Everything from ford design seems to be right at the bleeding limits. Seems like the 2Ds may have been a bit of an afterthought. Wondering if spicer boots have been tested any better. Especially for lifted 2Ds.

The spicer CV boot is the EXCACT same as OEM.

I recently "rebuilt" my spicer one by using the lower Axle side OEM CV and placed it on the upper transfer case side of the Spicer shaft. I left the boot loose on the shaft w/o a clamp, to allow more rubber deflection at max angle ( the rubber slips on the shaft at max angle hopefully preventing the tearing we've seen occurring)

so the spicer CV is identical to OEM.

 

[BigMeatsBronco]

this is the "special" Spicer yoke-flange that comes on the HD driveshaft. it bolts right up to the upper "cup" on the transfer case or the M220 side as well.... It could be used on bothe ends of a custom 1350 (2 joint) shaft.
good luck getting one separately.

 

[Valhalla]

That's exactly what I'm thinking.

 

[BigMeatsBronco]

The spicer HD shaft is the "same" for the U60 version....EXCEPT for the "special" flange pictured. is omitted.

So you can buy the HD spicer shaft and still use it if you upgrade later to the U60

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