Launching help

[93 Red Ty #1805]

The brakes on my 1993 Typhoon won`t hold past about 4 psi of boost.
What can I do to make them hold better? I`ve tried revving the engine to build up vaccum but that only helps for about 2-3 psi. Should I get new brakes? The truck has only 20,000 miles on it.

 

[WS6Clint]

Truck in neutral, pat gas to vaccum down brakes(makes them holt better), put tranny in drive, build to proper amount of boost, sidestep brake, stab throttle. Also, stand on brake, literally. If that don't help buy some Hawk brake pads for the front, the street/track ones (HPS I believe). I have those on my Sy, with normal pressure on the pedal they preform like normal pads, when on 'em hard they are like racing pads. They hold my Sy to about 13lbs of boost.

 

[bdubb]

or try changing the brake fuild.

 

[SyTyJedi]

How do your brakes behave otherwise? Have you recently changed anything and not bled the system properly?

 

[InvisiBill]

When you rev it up, you want to let off the gas quickly to snap the throttle blades shut and create a vacuum spike. You should feel the brake pedal sink down when it does that. A few people have said that their trucks just won't hold as well as others too...

 

[NIGHTMARE]

I'm heading to the track tomorrow night for the first time. When exactily do you guys lock up the stall. I'm just using a wire to jump the terminals.

Thanks

 

[93 Red Ty #1805]

SyTyJedi, I haven`t done anything to the truck. I`m not sure if the guy before me had them changed or not. The brakes act like they should with regular driving. I`ll try to find some of them Hawk pads.

Thanks

 

[93 Red Ty #1805]

I found the Hawk brake pads. They are $44.00 and should be here next Wed.

 

[sy2185]

The S-10 manual rear brake cyl.s help, and have you tried the e-brake launch ? F**k it- get a transbrake. You can hold the truck against the the transbrake to as much boost as you want w/o even touching the brakes, and unloading off the line with the push of a button. Not exactly that simple and you'd need a trans that's built to the max to take the strain of the launch, but it's an option. I hate all the crap we have to go through to build enough boost for a good launch.Once the guys at the track realized if they blasted through the burn out box and got staged as quick as I did I'd have no time to build brake pressure before the lights started to count down, and would creep over 4psi. They're in trouble when I get back.
Jeremy
What about a 9/11 torque conv.? You'll spool so fast it'll blow your mind.

 

[myclone]

Also use two "primary" shoes for the rear. It means buying two sets of brake shoes at a time but it seems to help me keep from spinning the rear tires and slipping the xfer case on boosted launches (is their any other kind of launch?? :wink: ).

BTW. Primary shoes are the ones with the most friction material on em. You'll see the diff when you open the box and pull the shoes out. One set has friction material on ~2/3 of it while the other two have material covering almost the entire shoe. Thats the "primary" shoe. You want to put two primary shoes on each side hence having to buy two complete sets of rear brake shoes.

HTH.