Burnout method for carby car

[wkd-windza]

Ive been told to start burnout in 2nd gear (p/glide) but i find it takes a fair bit of pedal to break traction then it hits the limiter. Its also hard to hold the car still before it starts to spin. Ive been goin from 1st to second for years no probs. Car weighs 3000lbs and has 850 d/pumper and 31 1/4 x 12.5 x 15 slicks. My limiter is not a burnout limiter its an over rev limiter set at 7200.

What are other racers with heavy carb cars doin, ive noticed a lot of super sedans going from 1st to second? Is it carby vs load thing??

Cheers

[dsyfer]

Do you use a "line locker" on the breaks?

[wkd-windza]

no line locker and no burnout limiter

[GTP owner]

If its a powerglide you MUST start in 1st, then go into second if it has the power. You will burn out clutches pretty quick starting in 2nd in an auto.

[noukid]

how bout for a rwd carby car with a manual and no line locker? any tips for a static burnout?

[GTP owner]

second gear, 4,000rpm dump clutch then quickly onto the brake pedal, but not too hard on the brake or you will stall it. It is a fine balance between throttle (not flat to the floor), brake (not stopping wheel spin, but not allowing it to roll forward) and steering to make sure you do not go too sideways - which will require you to roll forward a bit.
It takes a lot more control and practice in a manual. A line-locker and locked diff makes it so much easier - no roll forward and no sideways slewing.

[Tomo boss 260]

i have an auto burnout rig which used to be manual, and i changed it for that reason, i was sick of sitting sideways in the seat putting my right foot on both the brake and accelerator.

i agree with GTP owner either remove the rear brakes if its dedicated burnout car or get a linelocker, and not much point if u do not have a locked diff or tight lsd.

also a low ratio diff will help u grab second easier

[northey]

Originally Posted by wkd-windza

Ive been told to start burnout in 2nd gear (p/glide) but i find it takes a fair bit of pedal to break traction then it hits the limiter. Its also hard to hold the car still before it starts to spin. Ive been goin from 1st to second for years no probs. Car weighs 3000lbs and has 850 d/pumper and 31 1/4 x 12.5 x 15 slicks. My limiter is not a burnout limiter its an over rev limiter set at 7200.

What are other racers with heavy carb cars doin, ive noticed a lot of super sedans going from 1st to second? Is it carby vs load thing??

Cheers

I used to do that in a lightweight car (top gear start) and it was easy.
But I suggest that if it's not working in yours go back to your way.

Get wheels spinning in low in water then at around 3500 - 4000 change to top gear. It's probably what you were doing before anyway.

Change up as soon as the engine wants to shift up.

[tex]

Pardon my ignorance, but what does a carby have to do with it?

Won't any powerful car, regardless of induction, turn the tires?

[GTP370]

Originally Posted by tex

Pardon my ignorance, but what does a carby have to do with it?

Won't any powerful car, regardless of induction, turn the tires?

Hi Tex,

When my BA II GTP was PD super charged making 440kw at the rears, with 4.11 diff gears, 6 speed manual, MT streets is was hopeless getting decent heat into the tyres, hence the crap times and 60 footers.

We checked the tune and altered the torque tags but no improvement. The car was making a bucket load of torque!

My friend who has a wealth of experience steering manual applications also could not overcome the issue?????

Cheers, Paul.

[jcxr]

You can make a "hockey stick" type hand operated brake lever like the old dragsters used to use, Had one on my old manual drag car. Or just install a line locker.

[Falcon Coupe]

Originally Posted by tex

Pardon my ignorance, but what does a carby have to do with it?

Won't any powerful car, regardless of induction, turn the tires?

Yes it will, as long as the driver knows what he's doing.

[GTP owner]

Originally Posted by tex

Pardon my ignorance, but what does a carby have to do with it?

Won't any powerful car, regardless of induction, turn the tires?

Maybe Tex. If you have a tunnel ram and twin big carbies and big cam it will have a huge load of grunt up in the rev range, but nothing down low. In that case you can get into trouble if you don't have enough revs on board- the car will bog down. An auto being stressed at low rpm in a high gear (ie second in the powerglide) will result in stuffed clutches. Much the same as riding the clutch in a manual to take off in third gear. So you need to start in 1st, then into 2nd to make sure the converter is locked up and you do not bog down.

If you have efi, then it is much less likely to bog down and backfire through the inlet system. There will be more grunt available at lower revs. But ultimately, it is the revs and the power produced at those revs, and the gearing that dictates whether it will bog down.

So a 1000hp NA monster with 2.9 diff gears, 2,000rpm stall and a 3 speed auto will bog if you try to take off in third, then backfire through the carbies and likely damage something. Efi would reduce, but not eliminate this problem.

[tex]

Thanks Jas, makes complete sense.

How many weeks months off from your beast turing a tire in anger?

When do us Tassie lads get a 'private' viewing at your place? A couple of beers and maybe demonstration ? hahahahaahahah.

[GTP owner]

Originally Posted by tex

Thanks Jas, makes complete sense.

How many weeks months off from your beast turing a tire in anger?

When do us Tassie lads get a 'private' viewing at your place? A couple of beers and maybe demonstration ? hahahahaahahah.

High fill today, colour on by friday for a check for any problems, and hopefully final painting next week.
I think i may be able to get it together for tassienats - 1 month away. I need to do a private track test beforehand. I will keep everyone updated with the build thread. I am too scared to test it on the drive, but a few beers when done sounds good. Ian will be in that too.

[tex]

1200hp unleashed on your driveway would be a grand way to spend a sunny arvo with a refreshment in hand.

cheers

[Tomo boss 260]

i agree with tex, can't go wrong with a refreshment