2nd Gear Burnout ?
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I know guys that do burnouts in second gear, but that is because they are making tremendous power, and have a first gear that is over as soon as it begins. These are first gears in the neighborhood of 12:1. With your combination of tires and gearing I would think it better to start out in first gear. The 2.20 and 3.73 get a 8.21:1 1st. Second gear on the M21 would be 1.64, multiply that by 3.73 and you get 6.12:1. I think there would be quite a bit less strain on the drive train to start out in first gear, and then hit second if need be.
If I am wrong I am sure someone will correct me.
If I am wrong I am sure someone will correct me.
Its all about wheel speed ...... as has been said you may be better with a 1st gear ...... if you can maintain decent wheel speed in 1 st then your fine ...I use 2nd as first is just too low for my combo its on the limiter before I can build any heat
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I guess the better question is why would you want to start in a lower gear? The whole point of burnout in a waterbox is to heat the tires so as long as you're doing that, what does it matter what gear you are in?
That said, watch a NHRA pro-stocker do a burnout from an in car camera. They start in 2nd, shift to 3rd, then 4th and then 5th. I'm guessing you're putting a touch less HP though...
That said, watch a NHRA pro-stocker do a burnout from an in car camera. They start in 2nd, shift to 3rd, then 4th and then 5th. I'm guessing you're putting a touch less HP though...
G
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·Could 1500 plus hp make a difference:boring::boring::boring:
And for that matter the trans they use is just a little different
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I'm sure you're right but it's still damn impressive to watch!
The answer as to why you would want to start in a lower gear is simple. Less load on the gear train. If there is a somewhat lack in power ,combined with sticky tires, having an unnecessarily high (lower numerically) overall gear ratio it could lead to unnecessary damage. Or so I am thinking. Perhaps I am wrong.
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See I was thinking the opposite but you could be right. Typically, the tire traction is the weakest link in the whole system. I.e. you'd rather brake the tires lose then brake something else. If you make it more difficult to brake the tires lose, braking something else seems more logical to me. Of course, your theory could be right too. That's just what I was thinking.
What you are saying is right, but when in a higher gear you are getting less torque multiplication to the back tires. With normal street tires that would be a non issue, since most of them will break loose without any trouble. I'm just thinking it might be a different story when you add in some stickier tires like the drag radials mentioned.
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Fair enough... a drag racer I am not and certainly don't have the power to break lose drag radials with my current set-up... lol!
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Don't forget, with the close ratio box, it's actually even worse than that:
--------- 2.73 x 2.20 (1st) = 6.006 total torque multiplication --------
But, on the bright side, those u-joints may last forever! :yes:
My old 4 speed 70 SS had an M20 and 4.10 gears...2nd gear burnouts were very nice
I am quite well aware of my crippled launching ability given my current gearing. I'm going to put the 12 bolt in next week. That will help a lot. It should drive off ok after that.
ChrisMy old 4 speed 70 SS had an M20 and 4.10 gears...2nd gear burnouts were very nice
I agree,doing your burnout in 2nd worked well with my 4sp just make sure you get the tires wet and dump the clutch and not try to ease into a spin. Second gear should get them hot enough without shifting.
My problem now is with an automatic, which gear to start burnout in and do you shift during it?
John..doing a burnout with a TH400 I leave the trans in 2nd,and let it shift from 1-2 automatically during the burnout.
Chris
With the manual VB it won't shift on it's own and I hear guys that shift from 2nd to 3rd on the burnouts. I don't know how this is going to work for me being new.
I did the swap this off season because of bad knees and surgery. Other than that I would be known as Mr 4 sp jr. Lol
With the manual VB it won't shift on it's own and I hear guys that shift from 2nd to 3rd on the burnouts. I don't know how this is going to work for me being new.
I did the swap this off season because of bad knees and surgery. Other than that I would be known as Mr 4 sp jr. Lol
John..I'd start in first and immediately shift into 2nd with a manual VB
Mine still has the stock VB but a well programmed governor
Mine still has the stock VB but a well programmed governor
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