Caster
Thread Starter
Instructor
Joined: Jun 2010
Posts: 165
Likes: 0
From: concord ohio
Caster
After installing the Borgeson steering box, I has the 78 aligned to facitory specs. The car wondered quite a bit and did not feel stable. The good people at Borgeson recommended that I have the caster increased to 3-4 degrees positive. If I understand, it is a removal of shims. The passenger side has plenty, but the drivers side only has one thin shin. What can I do to gain the adjustment flexibility to have the shop alainged it to Borgeson recommendation?
Race Director
Joined: Sep 1999
Posts: 11,358
Likes: 379
From: Plano TX
The best way is to replace the upper control arms with aftermarket arms with more caster built in (VBP, SpeedDirect). With the stock arms you will have lots more shims in the back than front to get to 4 dgr.
Drifting
Joined: Mar 2011
Posts: 1,886
Likes: 9
After installing the Borgeson steering box, I has the 78 aligned to facitory specs. The car wondered quite a bit and did not feel stable. The good people at Borgeson recommended that I have the caster increased to 3-4 degrees positive. If I understand, it is a removal of shims. The passenger side has plenty, but the drivers side only has one thin shin. What can I do to gain the adjustment flexibility to have the shop alainged it to Borgeson recommendation?
Le Mans Master
Joined: Aug 2010
Posts: 9,272
Likes: 17
with the borge, it isnt as much for straight line driving as it is for being a bit to sensitive to steering corrections and tracking the road imperfections a bit to closely. another issue with some installs is that when you turn a corner , the steering doesnt return to center as quickly with out input from the driver. Thats why they recommend setting the caster to 3-4 degrees left to right positive. There are a few other things you can do to aid this, but the caster change is the easiest and least costly. A good shop can get it to 'within' specs. so it drives straight and doesnt chew tires. hope this helps
btw, depending on current settings , its probly an 1/8" shim per side taken from the front and installed in the rear, if that
btw, depending on current settings , its probly an 1/8" shim per side taken from the front and installed in the rear, if that
Last edited by oldalaskaman; Sep 16, 2012 at 09:29 AM.
