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Author Topic:   Adjusting trac bars
mustangboy
Gearhead

Posts: 1147
From: Ont, Canada
Registered: Mar 2002

posted 04-15-2002 01:28 AM     Click Here to See the Profile for mustangboy     Edit/Delete Message   Reply w/Quote
Need some advice on adjusting my trac bars.I had the springs on my 68 stang rearched and had an extra leaf put in,the problem is now the rubber bumpers on my bars are about 2 inches below my spring eye.The guy at the speed shop told me the little wedges you can buy are for fine tuning and won't take up that much clearance(I was running them right against the spring).I have just bolted a little peice of square tubing on top of the bars and the rubber to the top of that,but it looks very mickey mouse.Is there someway to adjust the bars back up there or is it time to get out the welder.I have the competition engineering trac bars that attach to the rear end U-bolts

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steve'66
Gearhead

Posts: 9533
From: Sonoma,CA,USA
Registered: Mar 2000

posted 04-15-2002 12:39 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
Yes the shims work fine. You'll need them to reposition your pinion angle, which should correct your traction bars too. Your bars are hanging down too far which is dangerous, and your pinion angle is way too steep too. I found a 4X4 shop that carries steel shims in 2, 4, and 6 degrees. The cheesy aluminum one can break up and loosen up your u-bolts. Good luck,

SteveW

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n2oMike
Gearhead

Posts: 2831
From: Spencer, WV
Registered: Jan 2001

posted 04-15-2002 02:10 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Putting the shims between the leaf spring and the spring perches of the axle housing will change pinion angle. (above the leaf spring on an early mustang)

Placing the shims between the springs and the tracton bar will change the angle of the traction bar without changing the pinion angle. (under the spring on an early mustang)

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

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mustangboy
Gearhead

Posts: 1147
From: Ont, Canada
Registered: Mar 2002

posted 04-15-2002 02:13 PM     Click Here to See the Profile for mustangboy     Edit/Delete Message   Reply w/Quote
Will the shims take up that much clearance though(roughly 2 inches)and any idea which ones I would need,2 ,4 or 6 degree?

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n2oMike
Gearhead

Posts: 2831
From: Spencer, WV
Registered: Jan 2001

posted 04-15-2002 02:29 PM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
Assuming the distance from the housing to the snubber is 18 inches (I don't have one to measure) the 6 degree shim should raise the snubber 1.9 inches. If the distance is further, it will raise it more. If it gets raised too much, you can always cut off part of the snubber.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220

[This message has been edited by n2oMike (edited 04-15-2002).]

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F551
Gearhead

Posts: 266
From: Manitoba, Canada
Registered: Nov 2000

posted 04-15-2002 02:36 PM     Click Here to See the Profile for F551   Click Here to Email F551     Edit/Delete Message   Reply w/Quote
You may have to use a combo of shims - they are also easy to find at a frontend shop for heavy trucks. When I used them on CE bars, just got a couple of each and shimmed it till it looked right. You can also buy different height snubbers, you can adjust height by trimming the rubber or inserting flat washers between the bar and rubber.
Keep in mind Steve's comment about the front of the bar being low! Would suck if you hit a speed bump or rail track etc.

------------------
Fred
68 Mustang 500CID/Powerglide - "No Tubs"
86 Mustang GT Cobra

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