engine mounting - Page 2 - 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> Hotrodding Basics
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #16 (permalink)  
Old 10-28-2012, 04:08 PM
Registered User
 
Last photo:
Join Date: Oct 2012
Posts: 101
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Thanks again for all the advice, if anyone has any advice on how to set-up the driveshafts than that would be a big help, I find very little on-line that pertains to having two shafts.

At this point I am setting the engine in place with a level carb which has given me an approx 3-4 degree downward pitch at my tailshaft.

From the little bit I have been able to find and unless I am mistaken you never want the driveshaft to sit level with the carrier bearing ( which is mounted in between the two shafts and hangs off the frame ) If it is level than the bearings within the u-joint never actually get to work and the joint will somehow wear out quicker.

So ( again unless I am mistaken ) you want the two pitches to cancel out one another which sounds to me as if you would want to make sure that the carrier bearing is a bit higher than the tailshaft end of the U-joint so that there is a 3-4 degree pitch upward in other words.

I am still confused though ( maybe on it all ) on how this is all going to affect the rear end driveshaft or secondary shaft pitch.

This is a multi-ton truck and the rear end in it is enormous and I cant imagine trying to fool with adjusting that pitch with shims ect.

I have call Dana, ( or I guess it may have been Spicer ) they have a tech line and they are pretty knowledgeable but they tell me they cant tell me where to even start. The best they can do is tell me how to fix it once it is set-up.

In other words they are telling me to get everything in place, get my driveshafts cut balanced and hung and then measure the different degrees they require and they will tell me where I need to adjust to get the most balance out of the deal.

Dosent make alot of sense to me but at this point it is the most help I have had offered from anyone.

Trucks gonna go down the road at slow speeds, maybe it will see the highway, maybe 60 or 65 MPH tops though I would imagine but I would like it to run as vibration free as possible.

I know this sort of stuff is prob. out of alot of you guys interest but I may as well throw it out there and see what anyone has to suggest.

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #17 (permalink)  
Old 10-28-2012, 07:13 PM
Registered User
 
Join Date: Jan 2011
Location: Hopewell, Va
Age: 62
Posts: 1,168
Wiki Edits: 0

Thanks: 0
Thanked 117 Times in 113 Posts
engine mounting

I just read on this website that you would want the front shaft to sit level with the transmission then then install the rear shaft as a one piece shaft. http://www.iedls.com/asp/admin/getFi...&TID=28&FN=PDF
Reply With Quote Quick reply to this message
  #18 (permalink)  
Old 10-28-2012, 09:40 PM
techinspector1's Avatar
Senior Curmudgeon
 
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Hemet, California, USA
Age: 72
Posts: 12,599
Wiki Edits: 326

Thanks: 701
Thanked 889 Times in 756 Posts
Quote:
Originally Posted by MARTINSR View Post
Wouldn't you want it square with the frame and if the your rear end is off that far, fix it?

Brian
Yes, of course, but that's not what this thread is about, so nobody is gonna be talking about squaring the frame to the diff. I'm just trying to answer the original question.
Reply With Quote Quick reply to this message
  #19 (permalink)  
Old 10-29-2012, 03:28 AM
Registered User
 
Last photo:
Join Date: Oct 2012
Posts: 101
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by cdminter59 View Post
I just read on this website that you would want the front shaft to sit level with the transmission then then install the rear shaft as a one piece shaft. http://www.iedls.com/asp/admin/getFi...&TID=28&FN=PDF
Thanks, can you tell me the specific page where it says ....that you would want the front shaft to sit level with the transmission.......I have read this before but my take on it was that after all was said and done and one cancels out another you would reach a level reading.
Reply With Quote Quick reply to this message
  #20 (permalink)  
Old 10-29-2012, 07:24 AM
Registered User
 
Last wiki edit: General Motors transmissions Last photo:
Join Date: Mar 2006
Location: near Yellowstone park
Posts: 4,217
Wiki Edits: 27

Thanks: 11
Thanked 233 Times in 219 Posts
drive line info

Spicer technical information is a good reference to read and has a chart to calculate when engine centerline and rear pinion are off set both up and down and left to right, check them out " spicer drive shaft installation"

Last edited by timothale; 10-29-2012 at 07:33 AM.
Reply With Quote Quick reply to this message
  #21 (permalink)  
Old 10-29-2012, 02:55 PM
Registered User
 
Last photo:
Join Date: Oct 2012
Posts: 101
Wiki Edits: 0

Thanks: 2
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by timothale View Post
Spicer technical information is a good reference to read and has a chart to calculate when engine centerline and rear pinion are off set both up and down and left to right, check them out " spicer drive shaft installation"
Thanks, will do
Reply With Quote Quick reply to this message
  #22 (permalink)  
Old 10-30-2012, 07:12 AM
1Gary's Avatar
Registered User
 

Last journal entry: 383 dyno sym
Last photo:
Join Date: Oct 2010
Location: Roch,NY
Age: 66
Posts: 1,515
Wiki Edits: 0

Thanks: 201
Thanked 153 Times in 139 Posts
For yrs I was convinced that the trans output had to be in a straight line with the rear end pinon.Some off road guys convinced me that isn't necessary true.That as long as the trans output and the pinion was in the same plane it didn't matter if there was "some" offset of the rear-end.
Reply With Quote Quick reply to this message

Recent Hotrodding Basics 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
Mounting Engine scottyd Hotrodding Basics 4 08-12-2012 02:20 PM
engine mounting in frame gufnstuf General Rodding Tech 24 09-08-2011 02:44 PM
Engine mounting Jimatruckin Engine 3 04-11-2010 03:09 PM
engine mounting angle? mike bryan Engine 3 11-12-2004 05:19 PM
Engine mounting Dutchman Engine 2 08-25-2003 02:12 AM


All times are GMT -6. The time now is 03:28 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.