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Alignment suggestions for daily driving and autoX

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Old Apr 2, 2003 | 04:24 PM
  #1  
sfr4dr's Avatar
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From: Carnelian Bay, CA
Default Alignment suggestions for daily driving and autoX

I'm looking for a good balance between daily driving and autoX specs. The kit to be installed will be a Skunk2 in the front and washers in the back.
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Old Apr 3, 2003 | 08:13 AM
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Default Re: Alignment suggestions for daily driving and autoX (sfr4dr)

As a starting point I'd suggest about 2 degrees negative camber in the front and 1 degree in the back. Give the front about 1/8" total toe out and set the rear to zero toe (ie not toed in or out). That may be a good starting point but you will probably want to adjust based on how your car feels.

1 degree of negative camber all around will help your autocross grip and and tire wear but may negatively affect street driving tire wear. Toeing out the rear of the car will also help the car turn more (oversteer) but the tire wear on the street will be bad. Toeing the rear in will make the car understeer more.

large amounts (more than 1/8") of toe in or out is what really wears your tires out. Camber can cause pre-mature wear but not nearly as bad.

Shawn
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Old Apr 3, 2003 | 10:51 AM
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Default Re: Alignment suggestions for daily driving and autoX (Snapspinnr)

The service manual says the ITR should be -0*30' plus or minus 1* and the rear at -0*45' plus 0*45' or minus -1*15'

I'm not sure what these number mean. Is -0*30' mean 30/100 or 3/10 of a degree? That's plus or minus 1 whole degree so the acceptable range would be -1*30' to +0*70' ????
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Old Apr 3, 2003 | 11:33 AM
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Default Re: Alignment suggestions for daily driving and autoX (sfr4dr)

Cambers are measured in degrees, and toes are measured in inches (or mm in metric system). And for the unit of degree, it can be shown as decimal like -1.5 degrees, or in the format that the service manual use (I forgot the name of this format, is there a name at all?) like -1*30'. * is actually the degree symbol. If my memory serves correctly, I believe -1*30' = -1.5 degrees.

As for alignment for daily driving and auto-x, I prefer to have zero toe front and rear, and setup the suspension for handling (aka chassis tuning). I'm on whatever the cambers are from the drop of the car, but if I can adjust, I would prefer -2.5 degrees front and -1.5 to -2.0 degrees rear.

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Old Apr 3, 2003 | 01:31 PM
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Default Re: Alignment suggestions for daily driving and autoX (vwong)

i believe the 1*30' is the 'minutes' notation. where the minutes part (30') are used for fractional degrees just like you have it.

similar to the longitute/latitude map coordinates..
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Old Apr 3, 2003 | 02:01 PM
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Default Re: Alignment suggestions for daily driving and autoX (illusion)

So, for example -1*45' would be negative 1.75 degrees or -1*15' would be -1.25 degrees?
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Old Apr 3, 2003 | 03:08 PM
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From: SoCali, CA, USA
Default Re: Alignment suggestions for daily driving and autoX (sfr4dr)

So, for example -1*45' would be negative 1.75 degrees or -1*15' would be -1.25 degrees?
Yes, you got it!!!
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Old Apr 3, 2003 | 03:11 PM
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Default Re: Alignment suggestions for daily driving and autoX (vwong)

Correct me if I'm wrong, but for best accuracy, toe should also be done in degrees as well. Since the actual angle would get bigger the smaller the overall diameter is, and vice versa.
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