slip yoke relocation?

[Joopin]

Well I got my D44 back today from "mr. driveshaft" and I told him how i was going to order a CV shaft and SYE from Tom Woods... I asked him how much he would charge for the same thing and he said that they don't use the SYE kit. They use an adaptor that attaches to the transfer case so the extention in the driveshaft isn't in the actuall shaft but above the CV joint into the transfer case. They said alot of people do it and it does the same thing as the SYE.
The reason I am considering this is because I would save $125 and I wouldn't have to crack open the transfer case to install it.
Has anyone heard of this type of thing? I was wondering if it is the same as a "hack and tap" but he didn't mention anything about hacking or tapping... Any thoughts?

 

[jeepin916]

hey do you have any pictures or a link of what your talking about? taht sounds kinda interesting but i never heard of it.

 

[Snitty]

it COULD be the "hack and tap" method.. but i'm not quite getting a good picture from your description

 

[Joopin]

Okay I'll try to explain it better... first, look at this picture of a Tom Woods CV driveshaft...

Now see the middle part of the driveshaft that has the rubber boot on it??
Under that boot is a "piston" type thing that allows the driveshaft to extend and retract when the jeep is flexing.
The thing this mr. driveshaft showed me takes that "piston" idea and puts it coming out of the transfercase. So the driveshaft will have the Double Cardan U Joint, but a solid, one piece main shaft.
Now look up at the picture again, that little piece above the DC U joint (left side) usually comes out of the Sye to connect to the driveshaft. Well imagine that piece has a longer shaft extending out to the left another 5 inches or so. THAT is where the "piston" will be extending and retracting... totally bypassing the need for a SYE kit, and he said you don't even have to open the transfercase!
I hope this explained it better... this will only work with a CV shaft I was told... and is just as good as the SYE.
No hacking or tapping!!! I don't think anyway... thats why I posted this!

 

[Bounty__Hunter]

You're describing the stock slip yoke and bolting on a CV driveshaft. It's not the hack and tap, the hack and tap yoke does not move on the output splines.

The setup you describe would work on a longer wheelbase vehicle, but one of the main benefits of a SYE is being able to shorten the transfer case output and add length to the driveshaft, thus reducing the angle of the driveshaft.

I'll be using a hack & tap SYE and a TJ or XJ stock front driveshaft shortened to the length I need. I'll be set up with only about $150 out of pocket, maybe $200 after shortening the CV shaft.

 

[Snitty]

yeah.. that is EXACTLY a stock setup... but using a DC joint rather than a single Ujoint... which will actually worsen the drive angle due to the extra distance of the DC joint.

 

[Joopin]

I knew it was too good to be true... I guess it would work to a certain extent, but like Bounty said... it would work on a vehicle with a longer wheelbase. Coincidently all I saw were XJs and full size trucks being worked on. The only Short wheelbase I saw there was a stock CJ-5.
Back to Tom Woods!!!