[urq] [s-cars] S-Car Brake system conversion- Read- no more PSpumpintegration <question>

[racingiron at comcast.net]

Cody Forbes wrote: 
> Another route is to delete the assist, leave the stock master cylinder, 
> and increase the size of the brakes. Larger brake pistons have the 
> same effect as smaller master cylinder pistons - travel increases 
> slightly, but so does leverage. Perfect excuse for going for some big 
> reds! 

I'm a little late on this one, but I just wanted to point out that bigger brakes don't necessarily equal bigger pistons. The effective piston diameter of a G60 is (surprise!) 60 mm. All of the 4-pot Porsche calipers I looked at a couple of years ago (including big reds and 996tt) were less than that. Of course, you're still getting a leverage boost with the larger rotor diameter. 

The Boxster calipers I put on my urq were almost identical to stock (G56?) for that car, so pedal travel decreased from the G60s that were mounted--a welcome change for heel-toe action that was icing on the cake for that upgrade. 

Eric R. 
'86 urq 
'92 urS 
'93 urS