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Eliminating the double cardan drive shaft

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Old 02-20-2012, 11:06 PM   #1
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Eliminating the double cardan drive shaft

I'm changing the rear double cardan drive shaft to a 1 piece rear shaft from the center bearing mount back to the pumpkin...for those who have done this...Is it a one or two man job and how long should I dedicate for the install.

Thanks again
Old 02-20-2012, 11:23 PM   #2
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Re: Eliminating the double cardan drive shaft

in so i can read later
Old 02-20-2012, 11:35 PM   #3
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Re: Eliminating the double cardan drive shaft

always better to have help if you can get it..and dont worry about how long you should take..just do it right the first time.
Old 02-21-2012, 11:36 PM   #4
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Re: Eliminating the double cardan drive shaft

I plan on having an assistant, my concern is when I start I need to know approximately how long I can expect for the install to take, because I would have to have it done by mid day to go off to work. Am I wishful thinking?
Old 02-22-2012, 02:27 AM   #5
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Re: Eliminating the double cardan drive shaft

I am replacing my double shaft tomorrow with a 1 piece aluminum, tomorrow. And doing it by myself. I will let you know
Old 02-22-2012, 02:30 PM   #6
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Re: Eliminating the double cardan drive shaft

took me 30 mins from jacking to lowering to install shaft

4 - 5/8 bolts
2 - 11/16 bolts

but I do have a rub from the bed support
Old 02-22-2012, 02:36 PM   #7
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by thebiggulp
took me 30 mins from jacking to lowering to install shaft

4 - 5/8 bolts
2 - 11/16 bolts

but I do have a rub from the bed support
Pics????
Old 02-22-2012, 03:04 PM   #8
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Re: Eliminating the double cardan drive shaft




Old 02-22-2012, 06:38 PM   #9
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Re: Eliminating the double cardan drive shaft

Hmmmm
Old 02-22-2012, 11:29 PM   #10
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Re: Eliminating the double cardan drive shaft

Thank you....sure does help me making a decision on when to start the replacement....btw, looks good, congratulations...
Old 02-23-2012, 11:56 AM   #11
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Re: Eliminating the double cardan drive shaft

Rubbing is not good,watcha gonna do ??
Old 02-24-2012, 12:57 AM   #12
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Re: Eliminating the double cardan drive shaft

well, it is finally finished. The one man job turned into a two man job and lift, hammer, sawzall

Once we cut the support out so the drive shaft could turn freely, it than would hit under acceleration on the trans hump, so we had to beat that up about 3/4 of an inch and now I just need to get the shims, so that under HARD WIDE OPEN THROTTLE it does not rub. My shaft is about running even from trans to rear-end and that is not good

So I am getting 2 degree shims or maybe 3 degree, and that will cure the problem
Old 02-24-2012, 01:41 AM   #13
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Re: Eliminating the double cardan drive shaft

I swapped my double cardan shaft with a ref 2 piece shaft and had to change the part on the rear end the shaft bolts to cause the pattern was diff but ended up putting the double cardan shaft back in cause it is noticably smoother at highway speeds
Old 02-24-2012, 01:44 AM   #14
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Re: Eliminating the double cardan drive shaft

This is aluminum, so I am hoping the freeway rpm's it is smooth compare to a steel one piece. Aluminum should absorb some vibration

Will give an update tomorrow
Old 02-24-2012, 11:11 AM   #15
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by thebiggulp
well, it is finally finished. The one man job turned into a two man job and lift, hammer, sawzall

Once we cut the support out so the drive shaft could turn freely, it than would hit under acceleration on the trans hump, so we had to beat that up about 3/4 of an inch and now I just need to get the shims, so that under HARD WIDE OPEN THROTTLE it does not rub. My shaft is about running even from trans to rear-end and that is not good

So I am getting 2 degree shims or maybe 3 degree, and that will cure the problem
Thanx I would get my $ back if it was me.....
Old 02-24-2012, 07:23 PM   #16
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Re: Eliminating the double cardan drive shaft

What's the benefit of changing to a one piece? Sorry for the n00b question...
Old 02-24-2012, 07:42 PM   #17
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Re: Eliminating the double cardan drive shaft

http://www.s10forum.com/forum/f13/al...-piece-198565/
Old 02-24-2012, 11:20 PM   #18
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Re: Eliminating the double cardan drive shaft

Part of me has a real problem with this even though its an interesting idea because of the fact that this is a truck. I mean, don't you use the bed for hauling stuff at times? Doesn't anyone realize that when you haul something with some weight the pinion angle will change and you will have at best rubbing, and possibly a broken drive shaft and a bent up undercarriage?

Maybe I'm misunderstanding something here, but the risks WAY outweigh the benefits as I see it.
Old 02-24-2012, 11:29 PM   #19
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Re: Eliminating the double cardan drive shaft

I'm so glad that my ext cab doesnt have the double cardan driveshaft. Does anyone swap over to the 2 piece driveshaft? 3 u-joints and a carrier bearing is better than worrying about stuff rubbing if it's a daily driver
Old 02-25-2012, 12:06 AM   #20
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Re: Eliminating the double cardan drive shaft

sooooo, wait. A stock height S-10 has no carrier bearing, but an xtreme does? That makes alot of sense actually.
Old 02-25-2012, 12:42 AM   #21
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Re: Eliminating the double cardan drive shaft

No EXTENDED CAB has bearing, EXTREME/ZQ8 has CV JOINT Driveshaft
Regular Cab, has straight driveshaft
Old 02-25-2012, 12:53 AM   #22
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Re: Eliminating the double cardan drive shaft

Isn't this the carrier bearing?



If so, my extended cab def has one.....

Sorry for the random picture, I just googled for one.

Last edited by tytotheler92; 02-25-2012 at 12:54 AM. Reason: spelling correction
Old 02-25-2012, 01:13 AM   #23
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Re: Eliminating the double cardan drive shaft

If you are EXTENDED CAB, you defintley have one. They do not come any other way from factory. You have 2 drive shafts, connected in the middle with a Carrier/Center Supoort Bearing
Old 02-25-2012, 01:14 AM   #24
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Re: Eliminating the double cardan drive shaft

^^ my zq8 has the carrier bearing as pictured above
Old 02-25-2012, 01:16 AM   #25
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Re: Eliminating the double cardan drive shaft

Why is everyone confused
Old 02-25-2012, 02:47 PM   #26
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Re: Eliminating the double cardan drive shaft

Ok, just finished my install...went smooth, done in about an hour....no more double cardan shaft...runs real smooth. I had installed the JTR alignment kit last week and the vibration all but disappeared, but with the shaft changed out the noise (rattle) and minimal vibration disappeared....time for another beer...
Old 02-25-2012, 03:36 PM   #27
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Re: Eliminating the double cardan drive shaft

Quote:
No EXTENDED CAB has bearing,
Quote:
Why is everyone confused
Thats why.
Old 02-25-2012, 05:43 PM   #28
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by ineedabeeah
Ok, just finished my install...went smooth, done in about an hour....no more double cardan shaft...runs real smooth. I had installed the JTR alignment kit last week and the vibration all but disappeared, but with the shaft changed out the noise (rattle) and minimal vibration disappeared....time for another beer...
One piece driveshaft ???
Old 02-25-2012, 08:59 PM   #29
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Re: Eliminating the double cardan drive shaft

No still a two piece...just the rear shaft with the double cardan was changed.
Old 02-25-2012, 10:31 PM   #30
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Re: Eliminating the double cardan drive shaft

Where did you get it at ??
Old 02-26-2012, 11:14 AM   #31
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Re: Eliminating the double cardan drive shaft

I got it from:
http://stores.ebay.com/Trans-Axle-Dr...id=p4340.l2563

All I can say, Greg at that store is a very stand up kind of guy! Great communication and fast shipping.
Old 09-10-2012, 08:27 PM   #32
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Re: Eliminating the double cardan drive shaft

I have the same conversion as you, but I've got a 3 inch drop in the back 2 inch in the front. I have massive vibration issues at high speed but i haven't shimmed it yet. PLEASE tell me what degree shim kit you used or exactly what you did to eliminate vibration
Old 09-11-2012, 11:24 AM   #33
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Re: Eliminating the double cardan drive shaft

Best $ ever spent !!

http://www.jagsthatrun.com/Pages/Par...aft-Align.html
Old 09-11-2012, 12:14 PM   #34
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Re: Eliminating the double cardan drive shaft

I too have changed my driveshaft out so I don't have the double cardan joint. I have the 3 degree shims but haven't installed them yet because my u-bolts are rusted on pretty bad. Does anyone know where I can get new u-bolts?? It is a stock height xtreme.
Old 09-11-2012, 02:49 PM   #35
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Re: Eliminating the double cardan drive shaft

You should be able to get universal u-bolts at any parts store and cut the length down after install.
Old 09-11-2012, 02:51 PM   #36
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by Neeseius
I have the same conversion as you, but I've got a 3 inch drop in the back 2 inch in the front. I have massive vibration issues at high speed but i haven't shimmed it yet. PLEASE tell me what degree shim kit you used or exactly what you did to eliminate vibration
You'll need to measure the degree of the driveshafts at different points to determine how far you are off and the shims you will need. The 3 degree shims usually work for most but you may need more or less depending on how bad the alignment is of the driveshafts.
Old 09-14-2012, 10:40 PM   #37
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by ZQ8LS1
I did purchase this and I got the 3 degree shim kit. I threw the carrier bearing spacer in the trash obviously. I can't decide whether or not to use the tranny mount spacer since this setup was designed for the 2 piece shaft with a center piece. Also, trying to measure angles under my truck using a basic angle measure proved to be too difficult. I couldn't find flat surfaces other than the drive shaft and I couldn't read the needle.

My motor mounts are broken so I got a set of energy suspension polly's. Does anyone know if using polly motor mounts with a regular tranny mount puts the bell housing in danger of cracking?
Old 09-15-2012, 08:29 PM   #38
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Re: Eliminating the double cardan drive shaft

I misread this thread. I actually have a 1 piece drive shaft. I got rid of the 2 piece shaft, double cardan, and carrier bearing completely
Old 09-16-2012, 08:39 AM   #39
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Re: Eliminating the double cardan drive shaft

Whan i bought my 2002 xtreme ( 4.3 , auto , extcab ) someone had taken out both parts of the 2 piece shaft including center bearing and put in a 1 piece but it rubbed sometimes and had a bad shake on deacceleration on the highway. After some salvage yard hunting and info from this site, i got a 2 piece shaft ( with no cardan joints )with center bearing out of a 91 s-10, 2wd, 4.3, auto , ext cab and grabed the yoke while i was there. I got it balanced just to be sure and proceeded to put it it in. After about a 1 hour install ( including 3 degree pinion shims from jtr) , I took it for a run, no vibrations at any speed and no rubbing. Didnt seem to need the rest of the kit from jtr, go figure .Best of all next time a joint goes its easy and cheap to change. By the way this install means no beating or cutting on floor or cross members and no cutting of the drive shaft.
Old 09-21-2012, 09:23 PM   #40
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Re: Eliminating the double cardan drive shaft

Quote: Originally Posted by burnt rubber
Whan i bought my 2002 xtreme ( 4.3 , auto , extcab ) someone had taken out both parts of the 2 piece shaft including center bearing and put in a 1 piece but it rubbed sometimes and had a bad shake on deacceleration on the highway. After some salvage yard hunting and info from this site, i got a 2 piece shaft ( with no cardan joints )with center bearing out of a 91 s-10, 2wd, 4.3, auto , ext cab and grabed the yoke while i was there. I got it balanced just to be sure and proceeded to put it it in. After about a 1 hour install ( including 3 degree pinion shims from jtr) , I took it for a run, no vibrations at any speed and no rubbing. Didnt seem to need the rest of the kit from jtr, go figure .Best of all next time a joint goes its easy and cheap to change. By the way this install means no beating or cutting on floor or cross members and no cutting of the drive shaft.
Wish I had your luck! I just installed my 3 degree shims from JTR, but I still have some vibrations. I'll probably make my own spacers (for trans. and carrier bearing) and see if that makes them go away.
Old 10-14-2012, 09:21 PM   #41
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Re: Eliminating the double cardan drive shaft

just get a single cardan drive shaft i just got one and its working just fine. i had gotten the shims for 3* but didn't end up needing it once i had changed to a single.
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