Magic driveshaft? - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 5 Old 08-22-2011, 05:26 PM Thread Starter
Premium Member
 
sargar's Avatar
 
Join Date: Jul 2011
Location: Monroe, Georgia
Posts: 3,873
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 22 Times in 21 Posts
Feedback Score: 1 reviews
Magic driveshaft?

Is anyone running a driveshaft with a cv or double cardan behind the center bearing? I have what feels like a driveshaft imbalance at 40-45 mph and was considering a new shaft if I could find some positive feedback on this setup.

Tuned, Deleted, Filtered, Monitored...all the usual stuff.
sargar is offline  
post #2 of 5 Old 08-23-2011, 08:49 AM
Compression Ignition Addict
 
badyota82's Avatar
 
Join Date: Sep 2008
Location: Wichita, KS
Posts: 344
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Is it throttle sensitive? Have you had your driveshaft checked for balance? If your truck is not lifted sky high , there should be no need for double cardon joint, especially with a two piece shaft. How is the condition of you carrier bearing?


Sent from my Autoguide iPhone app

2006 F250 Lariat CC FX4

Current Mods:
4" MBRP Exhaust
58v FICM w/ performance flash
Blue FPR Spring
SCT w/ tunes from Matt (SRL, 8k Tow, Unlim. Tow)
Edge Insight CTS
1200rpm High Idle
Coolant Filtration System
6.4 Banjo Bolts
ARP Head Studs
EGR Delete

Sold: 1997 F250 PSD 4x2 5 speed
badyota82 is offline  
post #3 of 5 Old 08-23-2011, 11:02 AM
Compression Ignition Addict
 
Join Date: Apr 2008
Location: Wellington Nevada
Posts: 8,703
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 1
Thanked 42 Times in 41 Posts
Feedback Score: 5 reviews
When lifting over a certain height the adding of a CV will solve all the problems..from the DS angles..I've used them and end result is the smoothest DS I've had on a lifted truck
CT Performance, Inc. is offline  
post #4 of 5 Old 08-23-2011, 04:49 PM Thread Starter
Premium Member
 
sargar's Avatar
 
Join Date: Jul 2011
Location: Monroe, Georgia
Posts: 3,873
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 1
Thanked 22 Times in 21 Posts
Feedback Score: 1 reviews
Quote:
Originally Posted by badyota82 View Post
Is it throttle sensitive? Have you had your driveshaft checked for balance? If your truck is not lifted sky high , there should be no need for double cardon joint, especially with a two piece shaft. How is the condition of you carrier bearing?


Sent from my Autoguide iPhone app
It is not throttle sensitive, I get it at a steady cruise speed, accelerating up through it and decelerating down through it. It is there regardless of trans gear selected, even vibrates in neutral until the truck slows to less than 40. The center bearing looks fine as does all three joints. I have measured angles on transfer case output and pinion flange and they are within 1/2 degree of one another. I have played with shimming the center bearing down and that lessened the intensity of it but spread it over a larger speed range. I have adjusted the center bearing toward the passengers side of the truck to try to eleminate any compound angles, this was done by mounting a laser pointer on the damper at the pinion and taking measurments to get the shaft in a straight line. I want it to ride like a 3/4 ton truck, not a 3/4 ton truck with something wrong with it. The really sad part of this is that the truck only has a leveling kit on the front, zero lift on the rear. I am looking at mail order due to simplicity, I can't miss work to hang out at a driveline shop half a day. Besides all the driveline shops are an hour or so away. I have a buddy that had one of these local driveline shops make a one piece shaft for project and they didn't do their math right. Too long and too small of diameter equals exploded shaft which busted trans case, removed fuel lines and other mean, nasty stuff to the bottom of the car. Minor trust issues there.

Tuned, Deleted, Filtered, Monitored...all the usual stuff.
sargar is offline  
post #5 of 5 Old 08-24-2011, 03:28 AM
Compression Ignition Addict
 
badyota82's Avatar
 
Join Date: Sep 2008
Location: Wichita, KS
Posts: 344
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I don't blame you on that one bit, hard to find people that do good quality work these days unfortunately. I was hoping you would not have tried anything you already have, since that is what I was going to suggest you check. I am having the EXACT SAME problem with my 82 Toyota that you are having with your truck. All I can think of at this point, and what I am in the process of checking on my Toyota, is the transfer case input and output bearings. I have double cardan joints on this truck and have double and triple checked everything except the t-case bearings. Wished I was done with it now to offer you more advice based on my experience, but I'm waiting on parts right now so it will be awhile yet before I know if that is the cause of the problem is.

Let me know if you find anything or have any luck figuring out your pain in the arse!


Sent from my Autoguide iPhone app

2006 F250 Lariat CC FX4

Current Mods:
4" MBRP Exhaust
58v FICM w/ performance flash
Blue FPR Spring
SCT w/ tunes from Matt (SRL, 8k Tow, Unlim. Tow)
Edge Insight CTS
1200rpm High Idle
Coolant Filtration System
6.4 Banjo Bolts
ARP Head Studs
EGR Delete

Sold: 1997 F250 PSD 4x2 5 speed
badyota82 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome