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Well I tested the original unit vs a rebuilt unit.
This original never held any vacuum and the rebuild held vacuum. It does take many pumps using a hand pump, but I was able to get 14" of vacuum before I stopped.
So for me this was a valid test off the car.
Next I will see if the brakes behave better when I re-install everything.
Hydro boost that thing. Im just waiting on my booster to kick. When it does im goin hydro.
I was looking at that option, but all the extra fluid lines, cooling etc, is something I am not ready for. I hate leaks, and I am not convinced the system is realable enough. Reliable meaning leak free. I cannot get reliable power steering hoses that dont leak every 3 years.
Well I now had a chance to pull the car out of storage and test the brakes.
All I can say is the brakes now work much better.
The previous problem was when I would run WOT and then go to the brakes quickly I would need a lot of pedal travel to get the brakes to start working. Steady driving the brakes seem to work normal.
With the test using the vacuum pump the original unit fails, while the replacement unit works / holds vacuum.
Now the road test the brakes work consistently reguardless of how I drive.
This same test also works while on the car. Same result as off the car.
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.
If you want to repeat the test, pullout the seal, check for damage, and and put some grease around where it seals to the housing.
Test brake booster off the car.
