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Re: Tall vs. Short Spindles
[Re: 69 Road Runner]
#17935
11/09/05 03:03 AM
11/09/05 03:03 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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adding more say I change my 70 duster to the tall spindle w/ matching discs and bracket, caliper, etc. after changing the UCA to newer Large UBJ. Would this spindle at http://www.piratejack.net/spindle.htmlfit if I wanted to restore my original suspension geometry?
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Re: Tall vs. Short Spindles
[Re: Rick_Ehrenberg]
#17939
11/26/07 01:13 AM
11/26/07 01:13 AM
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Joined: May 2003
Posts: 819 Central Ohio
rtidd440
super street
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super street
Joined: May 2003
Posts: 819
Central Ohio
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I'm a little late to this party but I have a question for Rick. If using the taller spindles raises the ball joint end of the upper arm in relation to the pivot point of the arm, could you use the moog offset bushings to raise the rear of the arm 3/8 to compensate? If so would that make the geometry acceptable? I believe there would still be a difference in the roll center but would all else be ok?
Rob
70 Swinger 340 4spd FC7 4 sale
69 Charger auto Q5
14 Challenger SRT8 Core 6spd black
Deposit on Hellcat
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Re: Tall vs. Short Spindles
[Re: rtidd440]
#17940
11/26/07 02:23 AM
11/26/07 02:23 AM
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Joined: Jan 2003
Posts: 27,560 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,560
So Cal
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Quote:
... If using the taller spindles raises the ball joint end of the upper arm in relation to the pivot point of the arm, could you use the moog offset bushings to raise the rear of the arm 3/8 to compensate? If so would that make the geometry acceptable? I believe there would still be a difference in the roll center but would all else be ok?
The factory alignment eccentrics themselves allow for 3/8" of movement up/down/in/out in the upper control arm inner pickup point. When you adjust your alignment the roll center is changing. Very few of these cars on the road will have the same exact roll centers.
If you installed the offset 7103 UCA bushings to move the UCA chassis pickup point up, the ball joint angle and a-arm angle will be closer to stock. But the roll center still will not be the same exact place as with the shorter spindle.
The newer ball joints take a little more angle than stock OE NOS. And the lower control arm will have to smash through the frame an INCH or TWO to make the ball joint start to lock up.
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