LUVTruck.com

whats the deal on the bore size on the brakes what significance is that cause im gonna swap my brake booster out for a willwood unit but it has so many diff bore sizes any help would be great and thanx ahead of time

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Epic Fabrication.
KAOS

Bigger bore pushes more fluid, but the pedal will feel spongy. Too small a bore, the pedal will feel really hard, but you more or less roll to a stop...

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FIAA!

SFPP!

its all in surface area the bigger the piston the more volume but takes more leg to make it work (or a booster) the smaller bore has more pressure but less volume per stroke.

Confused yet?
When i first built my truck as well as several others i adapted a Pinto master cyl (Manuel brakes) for the brakes (small bore) and had plenty of brake pressure and volume per stroke .

Something to remember is small bore/big piston = less pedal pressure
big bore/small piston = more pedal pressure

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1978 pro street step/side 455Buick, 4sp,4.11s, 31/18.5s

ok well imma try and make this easy for me..whats a 2000 s10 run far as brake bore in the master cyclinder

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Epic Fabrication.
KAOS