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Discussion Starter #1
I'm looking for some opinions and to see what everyone else is using. 3300lb street/strip car with wilwood dynalight 2 piston calipers up front and d52 single piston in the rear. Manual brakes and plan on staying that way. I have a stock cast iron type MC now and looking to upgrade to a lighter weight and one that may improve the stopping ability of car. Low 6s in 1/8 mile.
 

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Nothing wrong with a cast iron master cylinder.

Couple of questions:
1) do you know what the bore diameter of the master cylinder is?
2) is the master cylinder for 'manual brake' applications?
3) do you know what your current pedal ratio is?
 

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Discussion Starter #3
My current MC, which is 20 plus years old, is a 1 inch bore and I'm assuming it is for manual brakes. Not sure. It does have a non- adjustable proportional valve on it. My ratio is 6 to 1.
 

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Okay, as long as the master cylinder isn't leaking, I'd continue to use it.

First and easiest place to look to gain stopping power is to see if you can improve the pedal ratio by moving the master cylinder pushrod up closer to the pivot. I like as close to 7:1 myself. If you can't, then you'll need to replace the master cylinder with one with a smaller diameter. Start with a 7/8" bore unit first and see how that works.
 

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Welcome
 
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