| Upper A-arm offset bushing [message #121372] |
Sat, 09 April 2011 04:56  |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma:
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OK - I'm getting ready to put the bushings into the upper arms and I've collected a lot of information. Maybe too much but I'm missing one bit of info.
What I do have is that an offset bushing in the front should have the arrow pointing TOWARDS the ball joint.
An offset bushing in the rear should have the arrow pointing AWAY from the ball joint.
A picture of one of these MOOG busings is at:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=38442
A picture of one of the offset bushings (NAPA) without an arrow is at:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=38399
Comparing these two pictures shows that the "arrowhead" on an arrow-less bushing is the flat side of the rubber.
Another bit of passed on wisdom is that only one bushing is needed AND that using offset bushings in both the front and rear of the A-arm may interfere with with being able to set proper camber.
The one bit of info I don't have is, when using only one offset bushing, is it best to install it in the front or the back?
Another bit of info I recall reading, but don't have it marked or copied, is that camber should be very close to 0 or even negative. Is this correct?
Now - playing around with the arm it would appear that putting the offset bushing in the rear would enhance the setting of camber towards negative while installing it in the front would enhance camber towards positive. Does anyone have any thoughts or experience with this?
Also I note that the bushing I have do not have the end washers (shown in the picture of the MOOG bushing) that center the bolt in the bushing. I'm planning on sleeving the bushing and using Gr8 washers as needed to duplicate the function of the MOOG washers.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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