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[Z06] BFG burnout question

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Old Nov 12, 2006 | 04:45 PM
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Default BFG burnout question

Trying to get some better 60s here. I have a stock 02Z on 315/30/18 BFGs. I'm wondering If it possible to do a 2nd gear burnout. Want to get more heat to the tires see if it helps. also, what tire pressures are you guys find to be your sweet spot?
I run 27psi in mine. averaging 1.85 60fts.
Help, trying to break the 11s here
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Old Nov 12, 2006 | 07:15 PM
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Heavy 2nd gear burnout, 15psi and a best of 1.653 60', on stock clutch, and 1.531 with Aussie clutch.
Robert

Last edited by Robert56@RNS; Nov 12, 2006 at 10:43 PM.
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Old Nov 12, 2006 | 07:28 PM
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k thanx, wasnt sure the stock gearing and power will turn them.
guess I'll start at 20psi and see how it goes
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Old Nov 12, 2006 | 10:16 PM
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Lower limit of a stock LS6 clutch is about 1.60 no matter the tires.

Burnout Procedure Without a Line-lock

1) Put car in Competitive Driving mode (C5) or TC-Off (C6)
2) Drive around the water.
3) Back into the damp area, not the wet area. Back up enough to get 3/4 or more of the tire tread damp. Don't spin the tires in the water. You just want to get most of the tread with a sheen of water.
4) Roll forward to the leading edge of the damp area. Start the burnout there. Do NOT roll so far as to put the rear wheels onto the heavy sticky rubber/VHT prepped area. [After driving aroung the water, I open my door and look down at the rear wheel and verify the proper positioning of my rear wheel in the damp area. I keep the door open until I've pulled forward to the spot for starting the burnout.]
5) The car should start and finish the burnout with no more that a foot or so of forward movement.
6) Put the tranny in 2d gear. This will enable the tires to heat faster, because they’ll spin at a higher indicated mph. Since the tires are damp, they spin quite easily in 2d.
7) Drop the clutch, feed the throttle and immediately lightly apply the brakes with your left foot. The brakes are helpful for keeping the rear-end from walking sideways.
8) Bring the rpm to about 5000 and hold it there until the tires smoke strongly and start to drag down the rpm. At that point, back out of the throttle and release the brakes. You'll roar forward. The tires are heated.
9) It is helpful if you adjust the driver’s outside mirror to view the left rear wheel/smoke.
10) Warning, if you botch the burn-out, DON'T retry it with dry tires. Doing that will likely glaze the clutch...or…break an axle.
11) Practice will help get the synchronization of the foot movements.

You can practice in a level asphalt parking lot with water from a couple gallon jugs.Draw a couple lines with chalk to help establish an alignment guide. Pour out three or four gallons of water generally at the wheel points. Voila. You’ve got a pseudo water-box. An observer/spotter is a plus.

Don’t worry about brake wear. Four seconds on the brakes is like braking 60-10. You do that every time you drive the car.

Here is a link to a video of Ranger's Burnout without a Line-lock Please right click save as......

In the vid I'm on DRs. Would have spun the stock tires just to first decent smoke.

Backed into the damp area just past the concrete stripe and then pulled forward to the leading edge of the damp area.

Play it slow-mo. I drop the clutch and hit the brakes. You can see the brake lights. I spun them to strong smoke; and when the rpm began to be drawn down...then backed out of the throttle and released the brakes. You can see the two marks in the surface where the tires spun. The whole process took four seconds.

Ranger
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Old Nov 12, 2006 | 10:23 PM
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I personally do 1st gear burnout on 2 runs and later just do a little roll burnout before I line up. I run 15psi in them too.
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Old Nov 12, 2006 | 10:44 PM
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Forgot about my clutch, edited last post.
Robert
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