Archdukeferdinand said:Hence my question. I'm well aware that XJ TC crossmembers are all the same... Someone else posted that it wasn't a question of angles, but of support. I thought they meant support for the TC in general and that it was manifesting itself in vibes at the output shaft, which is where the crossmember comment came from.
It is a question of support and angles. The transfer case output shaft on later models is not supported as well as earlier models because of a different, shorter, transfer case tail cone design.
.Archdukeferdinand said:If it isn't a question of angles, then how did dropping the T-case fix the output shaft problems? I fail to see how dropping the t-case down does anything to increase the strength of any involved parts, unless by doing so you alleviate stress that was there (still not increasing the stregth, but at least longevity/durability)..
The idea with lowering the transfer case in to reduce the angle of drive line operation & therefor reduce the amount of angle that the front unijoint has to work through. Then reducing the amount of load the output shaft has to work with.
Archdukeferdinand said:What I think I'm hearing from people right now is that there was a problem with the support of the output shaft (undersized bearings?) and that the fix was to do NOTHING to address the actual design, and was to MOVE the transfer case, with the same shaft/bearing/tailcone problems...
You are right, by lowering the TC case it doesnt fix the actual design (which remember, doesnt cause a problem untill you start messing with the suspension height), but it does alieviate some drive line angles.
archdukeferdinand said:I'm not trying to be difficult, just trying to learn more, can someone please explain how this works out as a fix if the original problem had nothing to with angles?
To fix this sitiuation correctly to suit our lifted needs, you need to split the angle the front uni joint has to wok through by installing a double carden drive shaft(two front unijoints) that work together to reduce the angle put on 1 single joint. Also by installing a SYE you reduce the lenght of the output shaft of the TC which helps also.
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