Brake Caliper Piston Alignment

[PorschePilot]

I am rebuilding the brake calipers on my 74 911 and I want to know how close do I have to be to the 20 degree piston alignment. Can I eyeball it or do I have to get it exact? What happens if it's off by a little?

[Bill Verburg]

As w/ most things in life the closer to spec the better. It's easy enough to make a tool that will allow fairly exact orientation.

[Neilk]

Print the picture out, cut out the angle and trace it onto a a piece of cardboard. Voila!! You have a tool.

Angle courtesy of MS Paint.

[PorschePilot]

Thanks!