|07-12-2011 10:29 AM|
|99 to Life||
I would check your vacuum. I am having some new problems with my sbc 355 as I am having some vaccum issues now. I was running about 18" steady and power brakes worked fine. 7" booster, dual cyclinder with prop valve. Disc brakes front, drum rear. Stopped fine. Now I'm running about 15" of vac and there is virtually no power brakes, they are really stiff, but it does stop.
I would get vac gauge and see where you are at. I have mine connected to the manifold. Does the engine run ok, idle fine, have good response. No bogging etc.
|07-08-2011 10:44 PM|
Answer to the first question about rear tires.....225x75x15. I know that really large tires would play havoc with the system, but I don't think this is the case. Second question answered is that Fatman said that there are only 2 residual valves in their system and no proportioning or metering valves of any kind. They also indicated that the booster may be the problem, but I would have to troubleshoot the system as it may be a combination of several things. Since they have been making the frames they have changed a lot of their technology, such as different types of MC, boosters, etc.... Progress! Thanks for the recommended reading material, truly interesting!
|07-08-2011 08:55 PM|
[QUOTE= CHILD And you STILL are too interested in me - panties - makes me wonder if you are really ..... nah, not our Pepi. The consummate "expert" in my doings [/QUOTE]
I would suggest that you not flatter yourself .
|07-08-2011 07:35 PM|
What did Fatman tell you ?
Are you using huge tires on the rear ?
|07-08-2011 02:11 PM|
|T-bucket23||You may also want to be sure they are in the proper direction in the lines|
|07-08-2011 12:43 PM|
Residual valves are just check valves, there purpose is to help the pads and brake shoes stay close to the rotors and drums.
Instead of me smoking the keyboard have a read here;
you should be able to find the answers you are seeking. Brakes are a simple hydraulic system and power brakes just have the added benefit of vac assist.
|07-08-2011 08:00 AM|
Have been pondering this situation over and over and am wondering if the residual is bad? If I pound the brakes hard and the rears do not lock up, is it the residual valves fault? If there were no residuals in the system and no proportioning valve either then wouldn't the fronts brake last and the fronts first. I tried a hard brake situation and the rears did not lock up! Been researching all info. on this and there are so many conflicting reports. Some say you don't need residuals if the MC is on the firewall, but do when the MC is lowest. Others say the contrary. Some say you don't need a proportioning valve when running residuals, others say you do. Still others say don't use an adjustable proportioning valve, use a stock GM. Do you need residuals if you have just a proportioning valve, be it adjustable or non-adjustable? Where is the middle of the line in all this research and what will guarantee to work?
|07-08-2011 07:23 AM|
|T-bucket23||Pull the master off the booster, start the car and see if the pedal moves freely. If it doesn't the booster is bad.|
|07-08-2011 05:24 AM|
|07-07-2011 09:15 PM|
Tisk, tisk irelands CHILD has his panties in a wad ........... again.
So sorry I should read every word you post twice so as to not miss such relevant pertinent all encompassing information, from a hotrodders.com hotrod expert.
Now the question am I serious?
|07-07-2011 05:53 AM|
|Irelands child||You sure as heck didn't read my post #9 !!!!!!!!!|
|07-06-2011 11:48 PM|
Yes, there are different pad materials and compounds. Organics tend to be soft, semi-metallic are more aggressive, and carbon tend to be harder yet, but some of them work very well cold (amazing stuff!). Many race pads don't start to work well until they get up to temperature so consequently are not typically the best for street driving.
|07-06-2011 10:27 PM|
Bedding the Pads?
I've never heard of this procedure. Is it something that is applicable to Wilwood pads only or is this a recommended procedure for all disc brake pads? Also is it possible that my disc pads are too hard for this application? In the past they used to sell different grades of pads (soft and hard - economy and heavy duty) and I wonder if this still is a practise today.
|07-06-2011 09:16 PM|
Just a thought, doing a little reading of your post 6, you say new. it may very well be that the pads need to be bed. It is a common practice. Said the booster was checked out and working, that is pretty much all there is to hard brakes. They built it, and most likely has parts that match, not familiar with the company so I give them the benefit of the doubt.
|07-06-2011 08:32 PM|
Did you bed the pads or just drive them out of the box?
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