Hurst Line Lock problems.

[Rory McNeil]

Wondering if anybody else has experienced any problems with their Hurst Line Lock solenoids . Last year, I installed a brand new Hurst Line Lock in my street strip car, and although it would hold pressure fine, after about 5 or so seconds, it was acting as if it had an internal leak, or was losing holding power. If you were on a hill, or the starting line, it would hold the car still, but then you could feel it slowly releasing on it`s own. There was no signs of brake fluid leaks, it just would not maintain pressure. So I bought another Hurst Line Lok, and installed it over the winter, and for the past couple of months, it has been working perfectly. But a few days ago, I noticed a small puddle on the garage floor, about a foot behind the drivers front tire. The brake pedal still felt fine, but the chamber for the front brakes was a bit low. The bottom of the Line Lock solenoid was damp, so I wiped it all up, and went over all the brake line fittings for the solenoid, which were all still tight. So I wiped it dry again, and had my wife step on the brake pedal, while I watched with a light and a mirror. Not leaking from any fittings, but appears to be leaking from the solenoid body itself, between the center chrome body, and the bottom seam. This is the Hurst Line Lock that has a finned body, and is chrome and polished aluminum. In my race car, I have a much older Hurst Line Lock, which looks totally different, and has been working flawlessly for almost 35 years. Just curious if these newer Hurst units are trash, or if I have just been unlucky.

[Keith 944]

not sure of your particular issues but i had one go bad but i think that was me, i would sometimes push the button, set it, and push brake harder, was told that was a no-no. but who knows, i just bought a cheaper one (without the heat sink) been working for many years....

[65signet]

All the ones i have installed or friends have installed leak, went to the Biondo and no problems for many years of service.

[Eman]

I've had one on my car for over 20 years. only problem I ever had was operator installer error. I made the mistake of using teflon tape on the fitting threads. A piece of tape broke off and was on the needle valve. I disassembled and rebuilt it, no problem. They are simple and easy to rebuild.
The Hurst Line Lock is designed so that you can activate it and then pump more pressure as it is designed for that. Some don't work that way like the Moroso I had where you had to stand on the pedal then activate it.