Residual Pressure Valve problems

Anybody ever use the speedway or wilwood brand residual pressure valves with drum brakes.
Have you ever had to replace them repeatedly?
What causes them to fail?
which one is better?

 

I use Wilwood and have NEVER had one fail. I have also used the ones from Speedway but again, I've never had a bad one. If you have ANY contamination, debris or dirt in your system.....it can cause the RPV to stick just like any pressure valve.

 

The wilwood ones I bought leaked, had to use teflon tape to seal them. Not impressed with the quality.

 

Got my Wilwoods from Speedway. Work just fine.

 

I've bought them from willwood and others - never had a problem. You can (probably not reccomended though) take them apart to clean them out if by chance you got some dirt/debris in there.

 

outta curiousity, did ya' run the brake lines into the 1/8th inch npt adapters, for the threads on the rpv? I KNOW they leak like a seive, if ya' just thread brake line fittings in 'em! ( yeah...so...I KNOW NOW!)

 

I used Willwood from Speedway...they are absolute junk! I'm on my second one on the front. (which was the original leaky one, as the 'new' one disentegrated as soon as I tried to put the brass adapters in it.)

If you try to 'clean' one...don't use brake cleaner....It DESTROYS them...

I finally had to JB Weld the brass adapters on it to keep it from leaking!

The brakes still aren't right, and I suspect that all the fancy, leaky, expensive, parts are to blame.

I bought the Speedway branded ones for the coupe...but I'm skeptical of them as well.

I've talked to a few people, that said their brakes were never right with them on there, until they pulled them off.

 

I've used 100s of Wilwood valves on the chassis we build and had only 1 2lb valve fail. Leaking is another problem. We finally provide a tube of hydraulic sealer from Locktite which seems to solve the problem if used on clean 1/8 pipe fittings and allowed to cure for at least 24 hrs before installing any fluid.

 

i've got one hope it works!!

 

I've used 100s over the years, never had any fail.

 

my speedways are good!

 

We just put the Speedway branded ones on the coupe's chassis. (probably made by Wilwood) They didn't leak...but...we used the most expensive, heavy duty-style brass fittings that we could find...from an industrial supply house. The parts store/hardware store ones are too thin, and with all the pressure you have to put on them to get them tight, I think they lose their 'roundness', and end up bottoming out against the insides of the valves.

 

I used the wilwoods from speedway on our roadster, didn't have a problem with external leakage, but I am wondering if they are leaking back towards the master cylinder. Gotta pump them 3 times to hold a good pedal. bleed the shit outa them, no air in there. maybe i got some debris in em.

 

I am confused, folks...I wanna understand why some folks valves leak, and some don't...I'm damn curious, now, in other words...
I did not have to over tighten mine at all, the line fit into the pipe thread adapters just fine, and sealed up good...are they brake fittings everyone is using for each end of the valve ? with an inverted flare?
they will thread all the way in until they finally DO tighten, sorta, and def. still leak, if they are not. no whadda mean?

 

I'm using aluminum ANs with SS line and I think the fittings might be changing shape as we tighten them, hence the sometimes leaking problem.

 

I really think the problem is with the adapters that you have to use... the brass being tightened into the aluminum fittings are ripe for all kinds of trouble occuring.

The people that didn't have problems are the ones that happend to come across some decent brass fittings. The ones that had problems, had bad fittings, or had a leak, and tightened the fittings some more to compensate, and then bottomed out the fittings, and/or got the brass fittings, or aluminum valves out of round.

Here's a crazy thought....If they are BRAKE parts...why not have them allready set up for BRAKE lines...you know...inverted flare...3/8 24 thread... Just "thinking outside the box".

 

I use Speedway Valves in my shop and only ever had 1 dud, I never use the adaptors suppied but use Aluminium AN fittings.

 

i dont use that shit or porportioning valves and i have no problems with them either

 

Only used the 10lb willwoods, never any problems with them.

 

I dont like the sound of anything that has to do with brakes failing!!

 

Im using the Wilwoods 10lb with no problems at all even using the brass adapters. Not leak or any problems. But they are still new though. Still have time to fail. Make sure you don't over tighten when installing.

 

Even the one eci leaked i think im gonna use locktite....you would the for 24 bucks they would test this crap every one million at least . pissed in boston jake