How to stage a carbed car with a t-brake and 2 step??

[White90GT]

Guys, I'll be making the maiden voyage to the track on Friday night for T&T with the new setup. I have an index race on Saturday and along with tuning the car to the number, I need to figure out the best method for staging and cutting a good light.

With the old EFI 347 setup, I was consistently cutting .45-.47 lights on the pro tree with the t-brake which was good enough for a points championship in the 7.00 index.

I've never dealt with carbs before, so I have no idea how it will act when I go up to the line and stab the throttle on the t-brake and 2 step.

I usually hear cars blip the throttle a few times before they pull up to the line. I'm sure there is a reason for that, can someone explain? I assume it is to clean out the carb bowls after the burnout, or something like that. I assume I'll need to do that, but do I just rap it a few times at half throttle where only the front blades open, or do I nail it to the floor where all four blades open.

Will the carb start flooding and bog off the line if I sit on the two step and transbrake for more than 2-3 seconds?

The carb was just built buy Steve Taylor www.prccarbs.com. Its a modified 750 holley, modified to 950HP specs, square bore, 4 corner idle, jet extensions, etc... He built it for my combo.

Typically with my EFI setup, the way I adjusted my reaction times were to bring the RPMS up a bit on the 2 step (if it was a little slow) and bump in a little more after the 2nd stage bulbs come on. So I'll still use this method with the new setup.

[OrangeChevyII]

Dependind upon your burn out, the bowls useually do tend to want to flood. Hit the throttle a couple of times, roll up stage the brake and let it go. If your tune on the carb is good then dont worry about it, everything els will take care of it's self.

[lbt]

Practice differant things. Find what your set up likes and does not like.

............LBT

[Big Thumper]

Pull up and mat it....that is what I always do.

[Pro Trash]

I usually hear cars blip the throttle a few times before they pull up to the line. I'm sure there is a reason for that, can someone explain? I assume it is to clean out the carb bowls after the burnout, or something like that. I assume I'll need to do that, but do I just rap it a few times at half throttle where only the front blades open, or do I nail it to the floor where all four blades open.

Will the carb start flooding and bog off the line if I sit on the two step and transbrake for more than 2-3 seconds?

The carb was just built buy Steve Taylor www.prccarbs.com. Its a modified 750 holley, modified to 950HP specs, square bore, 4 corner idle, jet extensions, etc... He built it for my combo.

Typically with my EFI setup, the way I adjusted my reaction times were to bring the RPMS up a bit on the 2 step (if it was a little slow) and bump in a little more after the 2nd stage bulbs come on. So I'll still use this method with the new setup.

If the carb is built properly you won't bog because of it. The reason I flash the throttle prior to entering the lights is to push cooler fluid through the tranny and converter, t/b's build a lot of heat when engaged.

As for the rev limiter I always bring the rpm's up to where the two step kicks in and hold it there, it is half throttle for my car, that way I am not inducing to much fuel and air into a system that is limiting spark. It is not the carb you'll load up at full throttle on the limiter/brake it is the cylinders because with a limiter it pulls spark thus leaving more unspent fuel and air in the chamber. So rev it a few times before you hit your second staging light to push the coller fluid through the tranny and clean out the intake essentially.

[gravygraber59]

The way I do it is, after the burnout hit the gas once or twice to clean out the motor and check the gauges. Pre-stage and waite for the other guy to pre-stage, stage and get on the t-brake button, wh en the other guy stages put it on the mat and watch the lights. If he has already staged as soon as I go in I hit the button and the floor in that order, just keep your eye on the light. By not getting on the t-brake hard so quick it helps keep the heat down. Hang on and have fun. :D

Some guys like to go in the lights fast and get on the trans-brake to be ready, the problem with that is some will let you just sit there and take there time to stage.

[White90GT]

The way I do it is, after the burnout hit the gas once or twice to clean out the motor and check the gauges. Pre-stage and waite for the other guy to pre-stage, stage and get on the t-brake button, wh en the other guy stages put it on the mat and watch the lights. If he has already staged as soon as I go in I hit the button and the floor in that order, just keep your eye on the light. By not getting on the t-brake hard so quick it helps keep the heat down. Hang on and have fun. :D

Some guys like to go in the lights fast and get on the trans-brake to be ready, the problem with that is some will let you just sit there and take there time to stage.

I prefer to pre-stage last and fully stage first. Since courtesy staging is always in effect at the events I go to, I use that to my advantage.

Basically I would do my burnout (even with the EFI I would blip the throttle a couple times), stop and wait on the other guy to pre-stage. Once his top bulb is on, I roll all the way in to light my second bulb and I get on the t-brake (and off the footbrake, just a little over idle). I don't mat the throttle until his 2nd bulb comes on, down comes the late, off goes the t-brake button. I found using this method has helped me the most this past year on the .400 tree.

[way2fast4u]

the bump you hear is sometimes people purging nitrous in the motor for two things, one: to clean the plugs, and two: to test for air in nitrous line if they are two tight to buy a purge solinoid!

[gravygraber59]

I prefer to pre-stage last and fully stage first. Since courtesy staging is always in effect at the events I go to, I use that to my advantage.

Basically I would do my burnout (even with the EFI I would blip the throttle a couple times), stop and wait on the other guy to pre-stage. Once his top bulb is on, I roll all the way in to light my second bulb and I get on the t-brake (and off the footbrake, just a little over idle). I don't mat the throttle until his 2nd bulb comes on, down comes the late, off goes the t-brake button. I found using this method has helped me the most this past year on the .400 tree.


I would keep doing it just like that. Some times you will sit at the water box a long time and a carb motor may load up. Hit the gas once maybe twice just to clean it out and go. Everyone has there own idea about how it should be done, my best advice is do what feels good for you.

[michaelts71]

After I fully stage and hit the trans brake button, I like to bring the rpm up to about 1500 or so and wait for them to fully stage, that way when we are both fully staged and I deck the throttle I know it wont bog. When I started I would deck the throttle from an idle and sometimes if it is cold or something it would try to die so bringing the rpm's up a little over idle before you deck the throttle is a good habit to get in!

[lbt]

That's the same i why i do it

............LBT