boost
- Thread starter jerrad
- Start date
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The benefit of a line loc is that when you do a burnout only the front brakes are engaged. This makes it easy to do a burnout and lets the rear brakes stay cool so that they can hold more boost when you get ready to launch at the line. Without the line loc, when you do your burnout the back brakes will be engaged also and will get heated up. With hot rear brakes you will not be able to hold much boost. And if you don't do your burnout your tires won't stick very well.
I would test to see how much boost you can hold without doing a burnout first, when the brakes are nice and cold. If you can hold 4-5lbs and then can't hold any boost after doing a burnout, then you'll benefit from a line loc.
On the other hand, if you can't hold boost even without doing a burnout, you may need to upgrade your rear brakes shoes, maybe get bigger rear wheel cylinders, or even look at other thing such as a different chip or even a higher stall convertor if all else fails.
To build boost (nothing to do with a line loc - thats for doing burnouts) you should press the brakes as hard as you can and just ease into the throttle until hopefully boost starts building up without spinning the tires. You will only give partial throttle to do this. Too much throttle and you'll spin for sure. Some people find they can hardly build any boost at all, or not enough as they'd like so they floor the gas pedal an instant before letting off the brake so that they build boost right before the car takes off (has to do with flashing the convertor).
On my GN I can't build a lick of boost. It has weak brakes and I think it needs a higher stall convertor or have the stock convertor re-stalled. If the convertor stalls at too low a speed the tranny will start to move the rear tires at a lower rpm than what is needed to build boost. My T Type has a high stall convertor, soft rear brake shoes, bigger rear wheel cylinders, and a line loc. I can build 15+ lbs of boost no problem. This is with a stock turbo. A bigger turbo will usually have problems building boost without a high stall convertor.
Hopefully this answers your question and plus some.
I would test to see how much boost you can hold without doing a burnout first, when the brakes are nice and cold. If you can hold 4-5lbs and then can't hold any boost after doing a burnout, then you'll benefit from a line loc.
On the other hand, if you can't hold boost even without doing a burnout, you may need to upgrade your rear brakes shoes, maybe get bigger rear wheel cylinders, or even look at other thing such as a different chip or even a higher stall convertor if all else fails.
To build boost (nothing to do with a line loc - thats for doing burnouts) you should press the brakes as hard as you can and just ease into the throttle until hopefully boost starts building up without spinning the tires. You will only give partial throttle to do this. Too much throttle and you'll spin for sure. Some people find they can hardly build any boost at all, or not enough as they'd like so they floor the gas pedal an instant before letting off the brake so that they build boost right before the car takes off (has to do with flashing the convertor).
On my GN I can't build a lick of boost. It has weak brakes and I think it needs a higher stall convertor or have the stock convertor re-stalled. If the convertor stalls at too low a speed the tranny will start to move the rear tires at a lower rpm than what is needed to build boost. My T Type has a high stall convertor, soft rear brake shoes, bigger rear wheel cylinders, and a line loc. I can build 15+ lbs of boost no problem. This is with a stock turbo. A bigger turbo will usually have problems building boost without a high stall convertor.
Hopefully this answers your question and plus some.
When staging and building boost, I hold the brakes fairly hard while pre-staged and build about 3# to 5# of boost. When I light the second bulb I hold the brakes until I look like this 
and build up to 14# of boost. depending on the track conditions.
and build up to 14# of boost. depending on the track conditions.
