Thread: 3/16" vs 1/4" brake line

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Denny,

I respectfully disagree. I can't see any reason why 3/16 tube would decrease the pressure. The only effect it could have is a little more friction. Fluid velocity would change (increase) in smaller tubing, but the pressure won't change.

Hal,

In my experience, using 3/16" line will not cause a problem or decrease your braking power in any way. I have used it on every street rod / muscle car / custom I've ever built. Even used it on a 170 mph super comp drag car.

The main factors in brake systems are the master cylinder size, the wheel/caliper cylinder size and the brake pedal ratio. Line size could hurt if you went very, very small, but as long as you stick with 3/16", you're fine.