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Hp VS Weight

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Old Sep 22, 2005 | 04:41 PM
  #16  
CANTONRACER's Avatar
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From: North Canton, OH
Re: Hp VS Weight

"Now drop the same weight from the same location"

I did.
Old Sep 22, 2005 | 06:38 PM
  #17  
OldSStroker's Avatar
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Re: Hp VS Weight

Originally Posted by number77
I really want to get a car, lightly mod the engine and do this to it.
http://forums.vwvortex.com/zerothread?id=776885

I suggest you take this to some lounge somewhere else.

Big WOB on Advanced Tech, in my opinion. Big.






(WOB = Waste Of Bandwidth)
Old Sep 22, 2005 | 07:09 PM
  #18  
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Re: Hp VS Weight

Originally Posted by OldSStroker
I suggest you take this to some lounge somewhere else.
Big WOB on Advanced Tech, in my opinion. Big.
(WOB = Waste Of Bandwidth)
Originally Posted by LT193
I was wondering how much weight really plays into drag racing or making a car accelerate at faster rates. I have heard many things, and obveisly weight is a factor, but how much of one? A larger factor? Or maybe a not so large factor? Maybe taking off that extra 5 lbs will get you that much more, or will it make nearly 0 difference? I would love to hear any thoughts, questions, or facts on this topic.
The link shows a direct correlation to 0-60 1/4 mile and 60 ft times (performance standards) vs. weight
Line-by-line it is what he's asking. the direct relationship between "weight" and "drag racing or making a car accelerate at faster rates."

........................Step 1:base Step 2 Step 3 Step 4 Step 5 step6 Step 7
Curb Weight: 2,762 lbs 2,707 2,434 2,252 1,904 1,760 1,674
1/4 Mile: ..... 16.3@84.0 mph 16.0@85.5 15.5@82.5 15.2@89.6 14.7@90.7 14.4@92.2 14.4@92.2
60-foot: ...... 2.9 sec. 2.8 2.7 2.8 2.8 2.6 2.6
0-60 mph: 8.6 sec. 8.1 7.5 7.1 6.3 6.0 5.8



I did remove my post though out of respect.

Last edited by number77; Sep 22, 2005 at 07:26 PM.
Old Sep 22, 2005 | 07:49 PM
  #19  
Stephen 87 IROC's Avatar
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Joined: Mar 2000
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From: 51°N 114°W, 3500' elevation
Re: Hp VS Weight

Originally Posted by CANTONRACER
Same weight loss...same car...but as you can see...the slower car benefited more from the weight loss. The 9.0 car would have to almost lose 300 lbs. to get the same ET benefit.
Weight loss or HP increase changes exponentially the quicker you go. Add a typical 100 hp NOS kit to a 15 second car. It should gain 1 to 1.5 seconds. Add a 100 hp NOS kit to a 9 second car and it "might" gain .5 seconds. That's why you see some of the really fast cars using 2 or 3 stage 400+ hp NOS kits. Less HP off the line then increase it going down the track where it can be used better.

The faster you go, more hp is required to gain the same amount of ET improvement. The slow cars are happy to find ways to gain that extra second or 2 and it isn't that hard. Fast cars are happy to find that extra tenth or 2 because it takes a lot more to get that improvement.

Like I mentioned before, taking 200 pounds off a heavy car is easier to do than taking 200 pounds off an already light car. It can be done but it also costs a lot more. My 260 pound cast iron Dart Big M block can be changed to a 100-150 pound aluminum block. If I only had the money.

Last edited by Stephen 87 IROC; Sep 22, 2005 at 07:51 PM.
Old Sep 23, 2005 | 12:31 AM
  #20  
LT193's Avatar
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Joined: Feb 2005
Posts: 271
From: California
Re: Hp VS Weight

omg i love that crew that cut that car into pieces thats awsome! Dude 2 seconds, weight is a big factor....
Old Sep 23, 2005 | 04:44 PM
  #21  
Johnnynsac's Avatar
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Joined: Sep 2002
Posts: 589
From: Sacramento CA
Re: Hp VS Weight

Originally Posted by LT193
omg i love that crew that cut that car into pieces thats awsome! Dude 2 seconds, weight is a big factor....
http://forums.vwvortex.com/zerothread?id=776885
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