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View Full Version : Leaky brake proportioning valve



Subzilla
08-18-2010, 10:41
It seems when you let a vehicle sit idle too long, other things start to break. After the turbo/head project, I've now got a brake fluid leak at the proportioning valve on the '83 Sub. I can't really see exactly where the source is but it does leave a good silver dollar size spot on the ground everytime you park it and I'm having to top off the master cylinder quite often. Any thoughts?

Looking on line and I see adjustable proportioning valves for sale. Reading the specs, they recommend these when something on the vehicle has been changed like tire size. Ever since I put on the 35's, I get very easy rear wheel lock-up. I've always compensated with a soft foot but it always concerned me in a panic stop.

So I'm wondering if one of these babies will fix my 2 problems?? Wilwood has a simple one for $50ish and I bet a replacement valve for the Sub would be quite a bit more.