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Author Topic:   brakes
AC156
Dirt Full Roller

Total posts: 40
posted May 28, 2001 07:39 PM
I am building a car to run on a big 3/8 mile track(Batesville AR). Someone told me that I should just plug off the rear brakes because I wouldn't need them. What do you all think about this?

Pickel
Dirt Freak

Total posts: 239
posted May 28, 2001 09:16 PM UIN: 25419780
I wouldn't block off the rear brakes. If you are going to block off any you want to block off the right front only. Keep at least 3 brakes. Your brakes are very important for handling. I run 3 brakes.

jammin
Dirt Administrator

Total posts: 3279
posted May 28, 2001 09:18 PM UIN: 16262997
If you block off the rear brakes your gonna head straight into the wall.....those are what help you turn the car. They were messing with you.

pappyoutlaw
Dirt Roller

Total posts: 18
posted May 28, 2001 09:30 PM
I agree with jammin and pickel, I run 3 wheel brakes on my car and it definately helps me turn left. I have heard of some people runnin left side only. But I haven't tried it.

[This message has been edited by pappyoutlaw (edited May 28, 2001).]

dirtracer4u2
Dirt Full Roller

Total posts: 42
posted May 28, 2001 09:38 PM
Never heard of blocking off the rear but I can tell you that if you apply the brakes with only the front working,the car will continue to go straight even with the wheel turned,just as jammin said........been there, done that.......never again.

4s racing
Dirt Forum Racer

Total posts: 77
posted May 29, 2001 06:38 AM
jammin is rite when i bought my car it only had two breaks left front right rear. it took me about 3 hot laps to figure out i needed more brake .now i have all 4 with a block valve for the right front. works really well when you need all 4.

flyinsquirrel
Dirt Roller

Total posts: 14
posted June 01, 2001 05:59 PM
AC156, i would run all four brakes. run a bias valve front to rear (if rules allow). also run a shut off to the right front. this way you only have to run brake lines one time. if you cant run the shut off or bais and your rear-end is welded you can run with only one rear brake. this is of course if you have to much rear brake. i like the right front brake when the track starts to get slick.

widebody
Dirt Full Roller

Total posts: 74
posted June 04, 2001 12:19 PM
What master cylinders are everyone running?
Whats the best M/C for a 4 wheel disk setup with manual brakes?

Pickel
Dirt Freak

Total posts: 239
posted June 04, 2001 08:46 PM UIN: 25419780
if you can run something like willwood or afco go that way but if not what I use is one off a 74 corvette..its only $25 at auto zone..works good jus make sure your run same size brake line from front to rear or you will have probs.next year I hope to run willwood brake system..

34Racing
Dirt Full Roller

Total posts: 42
posted June 15, 2001 12:52 PM
Hey Pickel I'm running a 78 buick regal and I took the power brakes off and I have been trying to make it work on manual brakes. Since I took the p/b off I have had no brakes. With the 74 corvette M/C would you have to keep the original proportioning valve? When you say run the same size lines from the front to the rear do you mean the same size line to the front brakes and the rear brakes? My car has disc front and drum rears.

Pickel
Dirt Freak

Total posts: 239
posted June 15, 2001 08:22 PM UIN: 25419780
34 racing,
When you got one for a corvette did you get it for disc brakes, drum brake or did you get one for four wheel disc? Take the proportioning block off the car. Yes I mean run the same size lines to the master cyl. to the wheel cyl. If you can go with rear disc..get away from the drums they don't work well at all. What kind of rear end are you running? I can tell you a cheap way to make a set of discs for it. On your brakes you may have to apply a little more pressure when using a master cyl.

Hobbystocker
Dirt Roller

Total posts: 19
posted June 16, 2001 02:57 AM
We just recently put a Corvette M/C on our car and it is for a 4 wheel disc set up as that is what we run.I agree with Pikel about the drum brake on the rear.Disc brakes are relatively easy to install on any rear end be it GM or Ford 9". Best thing you can do is look around the pits at your track and see what other people are running. Also if your track rules do not allow a shut off/brake bias valve on your car do what we do..put a BB in the right front brake line where it bolts to the caliper.Unless the tech men shoot the rotors with a pyrometer they will never know what is going on.

34Racing
Dirt Full Roller

Total posts: 42
posted June 16, 2001 11:26 AM
Pickel,
I haven't bought a M/C yet. Which one is the best? Right now I'm using the stock M/C with no booster and I really have no brakes unless I press down really hard on the pedal and even then it is very little brake. I am running a stock 7.5 rear end. If I take the proportioning block off what is the best/cheapest way to run my brake lines? Thanks for the help.

racer17j
Dirt Maniac

Total posts: 165
posted June 16, 2001 09:13 PM UIN: 54865418
look for one off a 68-72 gm truck with manual brakes

Pickel
Dirt Freak

Total posts: 239
posted June 16, 2001 09:46 PM UIN: 25419780
hey 34racing
the one for 4 wheel disc is best..manule if you can ..where is your pedle at? is it at the top or to to the floor? if you have a hard pedle and its at the top break a line loose and see of the pedel gose down..if it dont check your lines for a clapsed hose or pinch line..I know my pedle is kind of hard but works good..

[This message has been edited by Pickel (edited June 16, 2001).]

Reign
Dirt Full Roller

Total posts: 54
posted June 17, 2001 01:08 AM UIN: 28044483
From My personal expierence i dont like 3 wheel brakes ...... well they work fine getting into the corners when all is well but i cant count the times i have ended up in the hook because of a spin or a pile up in front of me that i slid in to sideways
broke many centerlinks and steering boxes
now i run a bias adjuster front to rear and a lf cut off valve wich i never use unless the track is super super heavy and im really pushin hard

Just my say on it

34Racing
Dirt Full Roller

Total posts: 42
posted June 17, 2001 08:09 PM
Pickel,
My pedal is at the top and it is very hard to press. When I press the pedal it only goes down maybe half a inch. If I go with the M/C for the 4 wheel disc brakes will that work alright with the drum rear brakes that I am using? What will taking the proportioning block off help me to do?
Thanks Again 34

Pickel
Dirt Freak

Total posts: 239
posted June 17, 2001 08:45 PM UIN: 25419780
The shaft from the pedal to the master cyl. is it straight in line with the master cyl? If you take the proportional block off I think it evens up the pressure between the rear and the front.

Racer77
Dirt Roller

Total posts: 22
posted June 19, 2001 08:25 AM
In order to stay "stock" and still travel around to differant tracks. We took the booster apart (Remove internal baffels) put back in the centers and left the proportioning valve in. The car brakes great only slightly higher pressure is needed but you can really feel the brakes! If you want the car to pull slightly to the left grind grooves in the pad (same direction as rotor rotation) The more you grind the more it pulls. Then if the track goes real dry slick you can just put on non-ground pads for the feature.(If your car is loose going in)

34Racing
Dirt Full Roller

Total posts: 42
posted June 19, 2001 07:39 PM
Pickel,
I believe the brake rod is straight in line with the master cylinder. If I jack the car up and push the brakes it will stop the wheels from turning but when I'm on the track it will not stop me at all. I guess the weight of the car makes the difference. I tried a M/C from my jeep which has manual brakes and they still would not work. Will the Corvette M/C make that much of a difference?
Thanks 34

Pickel
Dirt Freak

Total posts: 239
posted June 19, 2001 09:07 PM UIN: 25419780
The reason I believe that they won't stop the car on the track is when drum brakes get hot they only slow the car down they don't like to lock up. I am not sure if the master cyl. will make a whole lot of difference. I've always run rear disc brakes. Find out if you can run rear disc brakes and I'll tell you how to convert it over in about 2 or 3 hours and will cost you about 50 to 60 dollars.

Racer4
Dirt Forum Racer

Total posts: 93
posted June 20, 2001 12:57 PM
The best all stock factory Brake setup I ever used was on my Hobby Stock Nova, we used a master cyl from a mid sixties chevy truck like 65 model, no rf brake at all, no valves anywhere, split the front and back at the master with a tee, ran drums in the rear and a single front disk brake. Make sure you have your rear shoes properly adjusted. Works great, no real mods needed and not any fancy doodads to mess you up or confuse you. Good Luck.

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