Any known alignment issues on 1.5" Eibachs? - TCCoA Forums
 1Likes
  • 1 Post By Tbird1997
 
LinkBack Thread Tools
post #1 of 11 (permalink) Old 10-25-2015, 08:36 AM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
Any known alignment issues on 1.5" Eibachs?

So in September 2014 I bought the GT Bird from Traveler. The tires were rough, worn out in the middle due to being overinflated, and I could see some scrubbing on the inside of the front tires. No worries thought I, as I knew I needed new tires, I'll just get the alignment when I get new tires.

The scrubbing on the inside is much worse than I thought. I noticed that the passenger front was worn through to the cords last week, so she's now parked till I get new tires. I haven't found anything stating that we have any caster/camber issues on a lowered car (1.5" Eibachs with KYB GR2 shocks). I do have the "aggressive" alignment specs from the technical articles, I just want to make sure that I don't need anything special to get it aligned. I know on my 1999 Mustang, it needed caster/camber plates due to lack of adjustment when lowered.
Woodman is offline  
Sponsored Links
Advertisement
 
post #2 of 11 (permalink) Old 10-25-2015, 11:07 AM
5th Gear Poster
 
Join Date: May 2015
Location: Cleveland
Posts: 479
Garage
Quote:
Originally Posted by Woodman View Post
So in September 2014 I bought the GT Bird from Traveler. The tires were rough, worn out in the middle due to being overinflated, and I could see some scrubbing on the inside of the front tires. No worries thought I, as I knew I needed new tires, I'll just get the alignment when I get new tires.

The scrubbing on the inside is much worse than I thought. I noticed that the passenger front was worn through to the cords last week, so she's now parked till I get new tires. I haven't found anything stating that we have any caster/camber issues on a lowered car (1.5" Eibachs with KYB GR2 shocks). I do have the "aggressive" alignment specs from the technical articles, I just want to make sure that I don't need anything special to get it aligned. I know on my 1999 Mustang, it needed caster/camber plates due to lack of adjustment when lowered.
I thought I'd seen something on improved alignment specs at one point but couldn't find it when I went looking for it. Could you point this out so I can write the specs down? I wished I could have found this before I had the car lined up Thursday. I'd like to have them for the next time.
97CatMan is offline  
post #3 of 11 (permalink) Old 10-25-2015, 12:08 PM
Seasoned PostWhore
 
Tbird1997's Avatar
 
Join Date: Feb 2009
Location: Murfreesboro, TN
Age: 27
Posts: 2,134
I've run the 1.5 eibachs for 6? years now and I have had my car aligned many times by Firestone (the only thing I let Firestone touch on my car) without any issues. Haven't bought anything extra. Sounds like the tires are just too big for the fronts. What size are they? Upper ball joints good?
Woodman likes this.

-Patrick
[email protected] on used street tires
See profile for full list of mods

Pics here.. http://forums.tccoa.com/showthread.php?t=129479
Tbird1997 is offline  
Sponsored Links
Advertisement
 
post #4 of 11 (permalink) Old 10-25-2015, 05:36 PM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
Quote:
Originally Posted by Tbird1997 View Post
I've run the 1.5 eibachs for 6? years now and I have had my car aligned many times by Firestone (the only thing I let Firestone touch on my car) without any issues. Haven't bought anything extra. Sounds like the tires are just too big for the fronts. What size are they? Upper ball joints good?
Tires are 255/50/16, they're 1/2" smaller than stock actually. I know the alignment has been off and the tires were not properly inflated before I got it... I think all it needs is a good alignment. I suspect the toe is off.

The fact they're a 10" wide tire on a 7" wheel weren't doing them any favors, but they're being replaced with 255/40/18's on 18x9" wheels. According to my measurements, should fit just fine, but I'll roll the fenders just in case.

Just wanted clarification that there aren't any known issues with lowering the car. Ball joints are good, can yank on the wheel without it moving.
Woodman is offline  
post #5 of 11 (permalink) Old 10-25-2015, 05:36 PM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
Quote:
Originally Posted by 97CatMan View Post
I thought I'd seen something on improved alignment specs at one point but couldn't find it when I went looking for it. Could you point this out so I can write the specs down? I wished I could have found this before I had the car lined up Thursday. I'd like to have them for the next time.
It's in the technical articles section. I have learned to look there first.
alignment
Woodman is offline  
post #6 of 11 (permalink) Old 10-25-2015, 07:19 PM
5th Gear Poster
 
Join Date: May 2015
Location: Cleveland
Posts: 479
Garage
Quote:
Originally Posted by Woodman View Post
It's in the technical articles section. I have learned to look there first.
alignment
Thanks! I looked there first. (Believe it or not). And even by looking at the URL in the link you posted I Still can't find it in the forums.

Your link works just fine. I copied all the info down and saved it. I'm wondering if some parts of the forum aren't displaying on a iPad or showing up in the mobile view.
97CatMan is offline  
post #7 of 11 (permalink) Old 10-25-2015, 07:32 PM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
Actually, I cannot find it in the technical articles either. I know that there is an "archive" of some very old unstickied posts that don't show up in the general view, but show up when you search. Perhaps it's in there, and perhaps we can ask a mod to sticky it?

Last edited by Woodman; 10-25-2015 at 08:05 PM.
Woodman is offline  
post #8 of 11 (permalink) Old 10-26-2015, 06:57 AM
5th Gear Poster
 
Join Date: May 2015
Location: Cleveland
Posts: 479
Garage
Quote:
Originally Posted by Woodman View Post
Actually, I cannot find it in the technical articles either. I know that there is an "archive" of some very old unstickied posts that don't show up in the general view, but show up when you search. Perhaps it's in there, and perhaps we can ask a mod to sticky it?
Not a bad idea. Any forum that's been updated tends to have some stuff fall through the cracks. I feel alittle better if you couldn't find it either. The search functions hit or miss for me.

It would be nice if the Ford Overdrive Transmisions 101 article was available in something other than Flash. Which doesn't work on the iPad. I'm trying to download it via my PC and convert it to PDF or something.

I KNEW I'd seen something. I was going to ask here on the forum but when I had the GF call around to check alignment prices my local Firestone countered with the offer of 20.00 off the regular alignment price if I brought it in that day. And they had a open spot to do it immediately. So I jumped. With stock wheels and tires I wasn't worried about getting the improved specs. But it would have been nice to have them.
97CatMan is offline  
post #9 of 11 (permalink) Old 10-26-2015, 11:39 AM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
I find using Google to search instead of the built in search to be more effective. When I found the alignment specs, I had typed "Alignment issues lowered 1997 Thunderbird" into Google and it was one of the first to pop up.
Woodman is offline  
post #10 of 11 (permalink) Old 10-26-2015, 08:33 PM
The Parts Guy
 
racecougar's Avatar
 
Join Date: Jul 2002
Location: Imperial, Missouri (near St. L
Age: 36
Posts: 7,265
As far as recommended specs go, this is what I would suggest:

Front:
Camber: Negative 0.8-1.3 You can go further, but you'll start wearing the insides of the tires. I typically prefer mine at ~ -0.8-1.0.
Caster: Positive 5.0-6.0
Toe: Positive .05-.15 On a autocross car, you can go slightly negative, but you'll give up stability at speed. I keep mine at ~ +0.1.
Cross Camber: As close to zero as possible.
Cross Caster: 0 to -0.3 Going negative helps on crowned roads, but will cause a slight drift to the left otherwise.
Total Toe: Positive 0.1-0.3 Once again, this is for a car you'll be driving on the street. If it's an autocross car, a little negative toe will help on turn in.

Rear:
Camber: Negative 0.5-1.0 Same as the front, you can go further, but you'll start wearing the insides of the tires. Also keep in mind that as the rear squats, the camber will tend to go further negative. I like mine set at ~ -0.5.
Toe: Zero to +0.15 I'd lean toward +0.1 on both sides with Delrin LCA bushings and toward zero with the stock LCA bushings, as they'll allow an increase in toe when under power.
Cross Camber: Same as front. Keep it close to zero.
Total Toe: 0-0.3


These settings have worked well for me as an all-purpose alignment (drag racing, corner carving, and highway cruising) on this chassis without any real adverse effects on tire wear. If the intended use was autocross-type events only, drag racing only, etc., I'd set things a bit differently. These are just my recommendations.

Rod @ AzzKicker Cars
[email protected]
90 XR7-The Meth Addict-KB SC'd 5.0L DOHC Stroker
2004 Mustang GT-The Driver-Intake/Exhaust/3.73's
1995 F150 4x4-The Mud Toy-5.0L/4R70W/33's/Warn 8274 Winch
94 LX w/Splitport 3.8L from 2000 Mustang - SOLD
2 - 90 35th Anny Ed SC's
And a TON of parts cars!
racecougar is offline  
post #11 of 11 (permalink) Old 10-26-2015, 10:27 PM Thread Starter
PostWhore
 
Woodman's Avatar
 
Join Date: Jan 2010
Location: Duluth, MN
Age: 45
Posts: 1,906
Garage
Quote:
Originally Posted by racecougar View Post
As far as recommended specs go, this is what I would suggest:

Front:
Camber: Negative 0.8-1.3 You can go further, but you'll start wearing the insides of the tires. I typically prefer mine at ~ -0.8-1.0.
Caster: Positive 5.0-6.0
Toe: Positive .05-.15 On a autocross car, you can go slightly negative, but you'll give up stability at speed. I keep mine at ~ +0.1.
Cross Camber: As close to zero as possible.
Cross Caster: 0 to -0.3 Going negative helps on crowned roads, but will cause a slight drift to the left otherwise.
Total Toe: Positive 0.1-0.3 Once again, this is for a car you'll be driving on the street. If it's an autocross car, a little negative toe will help on turn in.

Rear:
Camber: Negative 0.5-1.0 Same as the front, you can go further, but you'll start wearing the insides of the tires. Also keep in mind that as the rear squats, the camber will tend to go further negative. I like mine set at ~ -0.5.
Toe: Zero to +0.15 I'd lean toward +0.1 on both sides with Delrin LCA bushings and toward zero with the stock LCA bushings, as they'll allow an increase in toe when under power.
Cross Camber: Same as front. Keep it close to zero.
Total Toe: 0-0.3


These settings have worked well for me as an all-purpose alignment (drag racing, corner carving, and highway cruising) on this chassis without any real adverse effects on tire wear. If the intended use was autocross-type events only, drag racing only, etc., I'd set things a bit differently. These are just my recommendations.
Thank you! My car will be 99.9% street driven. It'll go down the local 1/8th street drags once or twice in the next few years, and if I can get it out to Brainerd International Raceway, I'd love to run the road course, but I don't think that would justify going to a full autocross alignment setup.
Woodman is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the TCCoA Forums 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











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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

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