Evo VI – Caster Angle Check

(First posted on MLR forum in July 2015)

After spending a while tweaking the ride height and camber of the new coilovers I thought I’d check the caster to make sure everything is as it should be.

The mount for the camber caster gauge is magnetic so I made some steel plates and extended wheel nuts with studs to fit the plates over the wheel.

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I set the plate parallel to the wheel by spinning the wheel and adjusting the plate until the plate was spinning flat with no sideways movement.

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To measure the caster you have to steer outwards a certain angle, zero the instrument, then steer the same amount back the other way and read the value. Easy enough to do by myself on the driver side…

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not so easy on the passenger side so I had to fetch my ‘glamorous assistant’

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The values I got.

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I didn’t spend too long setting the plates perfectly square as that doesn’t effect the caster reading but it is why the camber reading isn’t quite right. I know the camber is about 1.3 degrees on both sides from my other measurement method which I trust more. Happy the caster is as it should be and even both sides. Also the angle of rotation, lock to lock, matches both sides too.

Got a couple of pictures of it at work, as it sits now.

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