Hack n Tap SYE, Drive Shaft always Fully Collapsed
99 XJ 4.0 AW4
4.5 RC X-Series I installed the IRO HnT SYE a few months back and used a stock front drive shaft to replace my stock rear drive shaft. I have noticed recently that my driveshaft APPEARS to always be fully collapsed. Will this cause me any problems? Is there an ideal amount of extension that my DS should have? What are the risks here? Thanks! |
its too long, it should be at about the center of its travel. just remove it & take a measurement from yoke to yoke, then have a driveshaft shop shorten it, they will know how long to make it by the measurement you give them. if its a jy / old used ds i would have them rebuild it. then you know what you got. you could damage the tc w/ it too long.
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Did you actually measure the length when you cut the part off the T case, or just guessed and cut? Me and my buddy both have front drive shafts in the rear, with IRO hack and tap and had to both cut way different amounts off.
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Wow, I definitely don't want to damage the TC because of this. When I put it in, I didn't have to force it in, but it just barely fit. I will post up some pics tonight.
@Brandonrcm: Yes, I measured (twice at least) the amount that I cut off the output shaft, and did exactly what the directions from IRO said. It's a 29 spline, so I figured they would have it down... Apparently not. |
https://cimg1.ibsrv.net/gimg/www.che...290fd0401c.jpg
Here's whay I'm working with... What do you guys think? |
Originally Posted by t_long
(Post 2985473)
https://cimg1.ibsrv.net/gimg/www.che...290fd0401c.jpg
Here's whay I'm working with... What do you guys think? |
Alright, here's a photo of my t-case... Plenty of room to take more off of the output shaft but then I'll need to re-drill and re-tap the hole. Not sure I have enough there to do that and cut the entire currently drilled hole off. Thoughts?
https://cimg1.ibsrv.net/gimg/www.che...66da1af8f1.jpg |
Originally Posted by t_long
(Post 2986277)
Alright, here's a photo of my t-case... Plenty of room to take more off of the output shaft but then I'll need to re-drill and re-tap the hole. Not sure I have enough there to do that and cut the entire currently drilled hole off. Thoughts?
https://cimg1.ibsrv.net/gimg/www.che...66da1af8f1.jpg |
before you cut that output & yoke off too short find out what the minimum recommended spline engagement lenght is. i think its 1 1/2 " ? maybe, ask who supplied the kit.
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ps. it maybe easier to have the ds cut down a little shorter & rebalanced.
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Instructions say 1.25 of spline should be left on shaft.
https://cimg6.ibsrv.net/gimg/www.che...af2f5def95.jpg |
Originally Posted by srb53150
(Post 2986366)
before you cut that output & yoke off too short find out what the minimum recommended spline engagement lenght is. i think its 1 1/2 " ? maybe, ask who supplied the kit.
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I foresee a problem with cutting the shaft shorter, redrilling and retapping the hole because I think that doing that without ruining the existing threads will be near impossible. Am I off base on this one?
Everyone is right though... Looks like I should have cut it shorter to begin with. Lesson learned! :oops: Is there a spec for maximum spline engagement on the DS? (Couldn't think of a better way to phrase that)... Basically the minimum gap between the 2 pieces. |
i have the same h & tap on mine, i had my old rear ds retubed & rebuilt to fit properly between the yokes . they left me 1" for in travel , which leaves about 2 1/2 " out travel. which is just right, you need more travel out for droop then needed for compression. looks like you need to shorten the ds by 1 " , its a simple job for a shop, cut, reweld spline shaft back in & balance. under $100 i would think.
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i would cut the output shaft shorter, it would help with the drive shaft angle.
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