Adding weight, but don't want a big wheelie....

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flyfish

flyfish

C8H18+N2O = :-D
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So, I have a 10.5 index race coming up in about a week and a half and I need to slow the car down. I'm currently spot dropping at the 1000' mark and it's still too quick (darn cool air, lol). I have the ability to safely add weight in my trunk, but I'm a little worried about putting the car on the bumper. The car currently pulls the front wheels about 12-14 inches on launch, which is fine, no drama....my question is, will adding another 100-150lbs to the trunk put this on the bumper? I'm just a little nervous about hurting my car.

Any experience with adding weight would be appreciated.
 
How fast are you? (if 100# is good for a tenth)
 
on the rear passenger floor depending on what the weights are and how to secure them.
 
I wouldn't add weight. As mentioned, throttle limit plate and pull some rpm's out - short shift I mean. Easier on the car components.
 
Currently I'm lifting at the 1000' marker, coasting through the lights and it is running 10.38, so another 100lbs should get me close enough. I have spot to safely secure weight in the trunk, I just haven't used it in years. If I put the weight anywhere else I would have to figure out a mount.

I tried throttle limiting stuff years ago, but I don't have that kind of time to find the sweet spot (plus it I really didn't like it).

Short shifting unfortunately only gets me about 2 hundredths.
 
I have to say I agree with Mike and 318, throttle stop and change your driving a little, post 5 is simply my direct answer to the question.
 
flyfish said:
Currently I'm lifting at the 1000' marker, coasting through the lights and it is running 10.38, so another 100lbs should get me close enough. I have spot to safely secure weight in the trunk, I just haven't used it in years. If I put the weight anywhere else I would have to figure out a mount.

I tried throttle limiting stuff years ago, but I don't have that kind of time to find the sweet spot (plus it I really didn't like it).

Short shifting unfortunately only gets me about 2 hundredths.
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full roll cage?
 
flyfish said:
Currently I'm lifting at the 1000' marker, coasting through the lights and it is running 10.38, so another 100lbs should get me close enough. I have spot to safely secure weight in the trunk, I just haven't used it in years. If I put the weight anywhere else I would have to figure out a mount.

I tried throttle limiting stuff years ago, but I don't have that kind of time to find the sweet spot (plus it I really didn't like it).

Short shifting unfortunately only gets me about 2 hundredths.
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sum-791040_it_ml.jpg
:lol:
 
If short shifting doesn't help, pull some timing out of it. Guys in Stock and Super Stock do it all the time, to 'position' themselves in qualifying to draw a more favorable opponent in first round.
 
'63GT said:
If short shifting doesn't help, pull some timing out of it. Guys in Stock and Super Stock do it all the time, to 'position' themselves in qualifying to draw a more favorable opponent in first round.
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True, I could pull timing and get it there. I'm currently at 34°, setting at 30-31° would probably do it (along with the spot drop)....only problem is I don't have any practice time between now and the race next weekend, so I would only have my 2 qualifying passes to get it right. Definitely doable in a pinch.
 
flyfish said:
True, I could pull timing and get it there. I'm currently at 34°, setting at 30-31° would probably do it (along with the spot drop)....only problem is I don't have any practice time between now and the race next weekend, so I would only have my 2 qualifying passes to get it right. Definitely doable in a pinch.
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You could try wiring a switch on your shifter to activate your timing retard.. say -4-6°, and if you spin for some reason, you could put your timing back in at the flick of a switch to recover from it.
 
'63GT said:
You could try wiring a switch on your shifter to activate your timing retard.. say -4-6°, and if you spin for some reason, you could put your timing back in at the flick of a switch to recover from it.
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I don't have anything fancy like that, I have to turn my distributor to change the timing...but yes, that would be a neat way to do it if I did.
 
Drop launch rpm and shift rpm. Couple of time trials and you should be close enough. Of course the more TT’s the better.
 
lilfontleroy said:
100 pounds of weight equals 1/10sec. (aprox), if you are running 10.19 (call it .20) you would need at least 300 pounds of weight to get to 10.5, and if you don't want to chance breaking out maybe a little more, can you add the weight to the front or inside of the car?
Clamp On Lead Ballast Weight Bar, 25 LB
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Yeah that's a fat woman in the trunk. Definitely bumper draggin material.
 
flyfish said:
Short shifting unfortunately only gets me about 2 hundredths.
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Then shift like it’s a diesel, 4500ish. Just really joking with that statement but needing to slow a car down is better then wishing you had a little more power on shitty days.
 
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