Rebuilt brake booster

My OEM booster died recently. Time for a rebuild.

I sent it to Power Brake Booster, PDX, Ore.

What a difference!

I've not had consistent brakes for decades. They 'went away' with the install of a 292º/.508" cam. I always figured the poor brake operation a result of that cam. Having put in a bit less cam years ago (HE-3844), I wasn't surprised that the brakes didn't work much better. I would get two, maybe three pedals out of them before the booster quit. I added a storage canister...not to much better effect.

I got used to it.

The rebuilt booster? I have pressed/released the pedal SIX times at idle, on a slight slope, to have the brakes work every time. It's a huge improvement.

Vacuum at idle has not changed (6.5in/hg, 850rpm, 12º BTDC), that being an indication the OEM booster had not been merely leaking for years. I'll give it to a 'better' if not simply just 'new' booster.

If your brakes are iffy...and maybe always have been...and you figure it's your cam's fault, you might be surprised at the positive effect you will get from a rebuilt booster.

Wish I had done it years ago. My brakes were never a problem, really. I just knew I could count on an iron-leg approach from time to time. Still, them working 'mo-better' is 'mo-useful'.