Mustang II IFS initial caster adjustment - Hot Rod Forum : Hotrodders Bulletin Board -- Hot Rod Forum

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

LinkBack Thread Tools
  #1 (permalink)  
Old 08-15-2009, 07:06 PM
Registered User
Last photo:
Join Date: Apr 2008
Location: Waldport, Oregon
Posts: 22
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Mustang II IFS initial caster adjustment

I am installing a TCI Mustang II IFS into my '37 Chev coupe.

I have the crossmember bolted in, and the upper spring supports tacked onto the frame rails, and the spindles and rotors temporarily installed, to make sure the wheels are centered in the fender openings.
So far, it looks good.

TCI says 0 deg.camber, and 1 deg. caster.

Camber, no problem, Starrett dial level on rotor, with frame level, side to side,0 deg.

Here is the question.

How can I measure initial caster?

I have the frame level set for about the ride height and rake.

Here is what I did, I set a small straight edge onto the flats of the top and bottom nuts that attach the spindle to the upper and lower arms, and placed my dial level on them.

The nuts are only finger tight, so getting the flats parallel was easy.

I seem to be on target with the 1 deg. caster, after some fiddling back and forth, to get 0 deg. camber, and 1 deg. caster.

Is there another way to set the initial caster???

I just want to make sure my wheels will be centered in the openings.

P.S. I did a search, but turned up nothing, probably my search skills are not too good...

Thanks for any advice!

Reply With Quote Quick reply to this message
Sponsored Links
  #2 (permalink)  
Old 08-16-2009, 11:25 AM
aosborn's Avatar
Registered User
Last wiki edit: Suspension: designs, shapes, sizes Last photo:
Join Date: Oct 2008
Location: Lakewood, WA
Posts: 621
Wiki Edits: 7

Thanks: 0
Thanked 18 Times in 17 Posts
If the spindle is constructed with the upper and lower ball joints and the spindle shaft in the same vertical plane (which it likely is), all you would need to do is put a straight edge between the upper and lower joint shafts and measure the angle with the wheels in a straight ahead position. If the upper ball joints is more toward the rear than the lower, it is positive caster.

As a side note, even though TCI recommends 0 camber and 1 degree positive caster, those figures are pretty conservative. I have set up dozens of these front ends and have found that 1/2 degree negative camber and around 2 degrees positive caster for manual steering works very well. The negative camber helps considerably with reducing under-steer, and the increased caster improves tracking on the highway. These settings are for manual steering. 1/8" to 3/16" toe-in is typical.

Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 08-16-2009, 01:26 PM
Registered User
Last photo:
Join Date: Apr 2008
Location: Waldport, Oregon
Posts: 22
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the reply!

I just went out and checked things out, and I seem to be in the ball park for caster.

I just wanted to be sure before I finish welded the upper spring supports, and to make sure my wheels would be centered in the openings.

Strangely enough, By scrolling down the page, I see that I had posted about the same question before.

Sorry for posting about the same thing again.

I swear that I used the search function, and didn't turn up anything...
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
TCI mustang II IFS caster adjustment Rick4070 Suspension - Brakes - Steering 10 07-20-2008 03:16 PM
Mustang II IFS chevykid33 Hotrodding Basics 14 08-30-2007 07:32 PM
Mustang II IFS Tom 55Chevy Suspension - Brakes - Steering 0 06-05-2007 03:31 PM
Mustang II IFS Steering Adjustment horvath Suspension - Brakes - Steering 14 05-08-2004 11:25 PM
mustang II ifs specs Blob Suspension - Brakes - Steering 1 12-24-2003 09:48 AM

All times are GMT -6. The time now is 12:56 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.