U Joint Angle - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-08-2011, 10:32 AM
Bobs36ford's Avatar
Registered User
 

Last journal entry: Video of new upholstery
Last photo:
Join Date: Sep 2010
Location: virginia
Age: 78
Posts: 95
Wiki Edits: 0

Thanks: 57
Thanked 0 Times in 0 Posts
U Joint Angle

Hi
I have additional info about my u joint angle. First of all , i took a closer look at my problem and i think the angle is closer to 10 degrees not 20*. I have (2) questions

#1 see attachment of rear u joint and the 2 inch lowering block
in the background. If i were to change the lowering block to 1 inch wouldn't that change the u joint angle?

#2 see attachment drawing of the yoke. It only measures 5" from rear of trans. Is that OK ?

Bob
Attached Thumbnails
Click image for larger version

Name:	003.JPG
Views:	79
Size:	355.7 KB
ID:	58848   Click image for larger version

Name:	001.JPG
Views:	74
Size:	121.1 KB
ID:	58849  

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-08-2011, 03:04 PM
user151's Avatar
Registered User
 
Last photo:
Join Date: Dec 2008
Location: new england
Posts: 194
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
#1 -- I can't answer this, I do not know, but from the photo it doen't even look like ten degrees - buy an angle finder (about $5) and check.

#2 -- 5" may or may not be OK depending on the length of the yoke splined shaft ... the usual check is to push the yoke all the way in, then pull out one inch - that's where it should be with the car at rest and supported on the rear axle while this check is done.
Now with it out the one inch you can make the measurement you show in the photo and compare it to your 5 inches.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-08-2011, 06:37 PM
Frisco's Avatar
Glad To Be Here
 
Last photo:
Join Date: Nov 2002
Location: Canton, North Carolina
Age: 72
Posts: 2,244
Wiki Edits: 0

Thanks: 0
Thanked 8 Times in 8 Posts
Quote:
Originally Posted by Bobs36ford
Hi
I have additional info about my u joint angle. First of all , i took a closer look at my problem and i think the angle is closer to 10 degrees not 20*. I have (2) questions

#1 see attachment of rear u joint and the 2 inch lowering block
in the background. If i were to change the lowering block to 1 inch wouldn't that change the u joint angle?

#2 see attachment drawing of the yoke. It only measures 5" from rear of trans. Is that OK ?

Bob
Not sure why you started a new thread on this. Original Thread

My last reply to the original thread was numbered as #33.

I have posted a copy of your original pic of the front yoke of your driveshaft below.

To reply to your new questions in this post:

#1. Changing to a shorter lowering block will not change the angle of the front and/or rear u joints enough to correct your vibration.

#2. From your sketch of the front driveshaft u-joint and yoke and from your original pic of that yoke, I would suggest that the yoke is not far enough into the trans to operate correctly. (The rust rings seen in your pic are probably caused by the trans seal when the yoke was installed at some time to the correct depth.) The yoke not being far enough into the trans tail shaft is more than likely the cause of the vibration you have as well as causing the trans tailshaft seal to be in such poor condition. The yoke length is probably correct. The actual problem is that the overall length of the driveshaft is too short and should be corrected.

As I asked in your original thread, how are you determining the angle(s)?

user151 mentioned a method that is commonly used to determine the correct installed depth of the yoke in his post above.
Attached Thumbnails
Click image for larger version

Name:	ujoint.jpg
Views:	48
Size:	174.2 KB
ID:	58854  
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-09-2011, 12:29 PM
prostreet6t9's Avatar
Differential/Driveline
 
Last photo:
Join Date: Sep 2008
Location: oregon
Age: 51
Posts: 1,717
Wiki Edits: 0

Thanks: 5
Thanked 39 Times in 36 Posts
Work on your front angle first as talked about in the other thread. Post a pic's of your new angles. No,, its not 20 deg's, but it's not correct.

After you get better angles check that D/L for being too short.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-09-2011, 01:05 PM
Registered User
 
Last wiki edit: Mopar tapered axle rear brake conversion
Last journal entry: What I'm doing now...
Last photo:
Join Date: Jan 2002
Posts: 4,267
Wiki Edits: 49

Thanks: 0
Thanked 4 Times in 4 Posts
Based on the picture your front driveshaft yoke isn't fully seated on the trans output shaft and that can easily cause driveline vibration.

Centerline
HotRodsAndHemis.com

"Horsepower sells cars, Torque wins races." Carroll Shelby
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-10-2011, 10:37 AM
prostreet6t9's Avatar
Differential/Driveline
 
Last photo:
Join Date: Sep 2008
Location: oregon
Age: 51
Posts: 1,717
Wiki Edits: 0

Thanks: 5
Thanked 39 Times in 36 Posts
[QUOTE=Centerline]Based on the picture your front driveshaft yoke isn't fully seated on the trans output shaft and that can easily cause driveline vibration.

X2.. Get that front angle fixed so when the D/L problem in fixed the shaft will be spot on.
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 10-11-2011, 09:18 AM
S10xGN's Avatar
Gotta love a turbo!
 

Last journal entry: Body on Frame today.
Last photo:
Join Date: Aug 2004
Location: Port Neches, TX
Age: 61
Posts: 1,641
Wiki Edits: 0

Thanks: 0
Thanked 58 Times in 55 Posts
If you don't believe these guys, remove the driveshaft, grab the splined output shaft of the transmission, and give it a good wiggle. Once you see how much movement you get, you'll have more appreciation for what the tailshaft bushing does for stabilizing the rear yoke. On your car, it appears the yoke isn't in far enough to be fully in the bushing. Hopefully, the bushing hasn't been damaged...

Russ
Reply With Quote Quick reply to this message

Recent Transmission - Rearend posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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:

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
steering bell joint = U joint ? user151 Suspension - Brakes - Steering 5 04-23-2011 11:53 AM
U joint pinion angle question vetteman Transmission - Rearend 7 05-09-2009 09:09 PM
driveshaft angle c-v joint rear wheel drive buckhorn Transmission - Rearend 4 01-13-2006 08:41 AM


All times are GMT -6. The time now is 08:06 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.