SUPPORT OUR SPONSOR

Go Back   Club Cobra > Club Cobra Tech Areas > Shop Talk

Welcome to Club Cobra!  The World's largest non biased Shelby Cobra related site!

  •  » Representation from nearly all Cobra/Daytona/GT40 manufacturers
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and nearly 1 million posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

Keith Craft Racing
Nevada Classics
MMG Superformance
Main Menu
Nevada Classics
Nevada Classics
Advertise at CC
Banner Ad Rates
MMG Superformance
MMG Superformance
MMG Superformance
Keith Craft Racing
March 2024
S M T W T F S
          1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31            
  #1 (permalink)  
Old 04-30-2015, 03:51 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2015
Location: Matthews, NC
Cobra Make, Engine: CMC Ford big block
Posts: 3
Not Ranked     
Default Rear spring geometry

I purchased a CMC frame and body and just started installing a 1990 8.8 rearend. The spring mount on the lower control arm is 1 5/8 inch behind the upper spring mount on the frame. So the spring sits on an angle and does not look correct. I will try to add a picture. Is this misalignment O.K. or do I need to cut the upper spring mount off and re weld it back further? The rear end did bolt right up and is centered in the frame. Thanks for the help!!!!!
Attached Images
 
Reply With Quote
  #2 (permalink)  
Old 04-30-2015, 04:17 PM
joyridin''s Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2009
Posts: 1,689
Not Ranked     
Default

What lower control arms did you use? They look wrong. They were supposed to be from a Mustang 2. Are yours from the 1990 Mustang?
Reply With Quote
  #3 (permalink)  
Old 04-30-2015, 04:30 PM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2015
Location: Matthews, NC
Cobra Make, Engine: CMC Ford big block
Posts: 3
Not Ranked     
Default

Well, I read that the axle needed to be 59.5 inches wide and from a late model mustang 8.8. The manual was printed in the 90's so I used the entire rear suspension from a 1990 mustang. Is that wrong? Was I suppose to get the upper and lower control arms from a mustang II and will they bolt up to the rear end that I have? Thanks.
Reply With Quote
  #4 (permalink)  
Old 04-30-2015, 04:35 PM
mickmate's Avatar
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Sep 2000
Location: Holderness, NH, US of A, NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
Not Ranked     
Default

Check your wheelbase, it looks like the arms are too long as Joyridin points out.
__________________
mickmate
http://www.actoncustom.com/
Reply With Quote
  #5 (permalink)  
Old 05-01-2015, 04:53 AM
joyridin''s Avatar
CC Member
Visit my Photo Gallery

 
Join Date: Feb 2009
Posts: 1,689
Not Ranked     
Default

I believe the length of the arms are the same, but they moved the spring perches rearward on the later Mustangs. Your best bet is to get a set of aftermarket upper and lower control arms and modify the spring perch on the lower arm. I grabbed a set of Factory 5 tubular arms, removed the perch, and welded it in the correct spot. It worked fine. Also, it looks as though you are using the spring from a later Mustang. You would have to shorten the spring or find a shorter one from a Mustang 2. I do not think you can remove the upper mount and move it back as it will hit the body. You would have to cut holes in the trunk.

The easiest fix if you can do it is find a set of QA1 coilovers from a Mustang and mount them on the rear. Then you can remove the upper spring perch altogether. They are relatively easy to find.
Reply With Quote
  #6 (permalink)  
Old 05-02-2015, 09:19 AM
CC Member
Visit my Photo Gallery

 
Join Date: Jan 2015
Location: Matthews, NC
Cobra Make, Engine: CMC Ford big block
Posts: 3
Not Ranked     
Default

Wheelbase is 90 inches so the length looks correct. Instead of moving the lower control arm mounts forward, which would be easier, I think that I will cut out the upper mounts and re weld them back about 1 3/4 inch. That way the spring will be closer to the axle and I expect my ride to be a little smoother. This will be a street car. Thanks for the responses.
Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 05:31 PM.


Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: CC Policy