How much gas gets used in a qtr mi run? - Dodge Challenger Forum: Challenger & SRT8 Forums
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#1 (permalink) Old 11-19-2011, 04:00 PM
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How much gas gets used in a qtr mi run?

A funny thought crossed my head whilst enjoying Hemi goodness on a curvy black ribbon...I wondered if I was able to floor it for a short stretch of road, would I notice a distinct change in the fuel gauge, afterward? Then I thought, do people who do qtr mi runs notice the fuel needle drop by a visible tick after each new run? If so, how much gas would you estimate that is?

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#2 (permalink) Old 11-19-2011, 04:32 PM
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Never really tested it but in 10 runs im out almost a 1/4 tank. That includes the drive back to the pits and drive to the staging lanes.

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#3 (permalink) Old 11-19-2011, 06:37 PM
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I made 4 passes running C16 fuel and used just over 5 gallons on 4 passes plus trip to staging lanes, good burnout, and return road back to my pit. So just over 1 gallon per run.

My car doe not run on the street however.

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#4 (permalink) Old 11-19-2011, 08:52 PM
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This is neat info! I had wondered if it could possibly be on the order of 1 gal per run, but couldn't convince myself if that could actually be the case.

SRT8Tech, sounds like half a gallon or so per run could be a typical value for a 392 putting down full-rated output for most of 1/4 mi (or full-rated output for 12.5-13 sec)?

Last edited by randycat99; 11-19-2011 at 08:55 PM.
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#5 (permalink) Old 11-20-2011, 09:42 AM
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Nowhere close to that much. And if you're worried about gas mileage during racing, you probably shouldn't be racing

Quote:
Originally Posted by randycat99 View Post
This is neat info! I had wondered if it could possibly be on the order of 1 gal per run, but couldn't convince myself if that could actually be the case.

SRT8Tech, sounds like half a gallon or so per run could be a typical value for a 392 putting down full-rated output for most of 1/4 mi (or full-rated output for 12.5-13 sec)?

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#6 (permalink) Old 11-20-2011, 11:08 AM
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I also use around 1/4 tank 10 passes for a day at the track. 104 at 6.99 gal
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#7 (permalink) Old 11-20-2011, 07:48 PM
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Nowhere close to that much. And if you're worried about gas mileage during racing, you probably shouldn't be racing
No, that's not what I was getting at, at all.

I was purely curious about how much is actually consumed in a 1/4 mi pass. The EPA spends so much time figuring out what is a representative mpg that occurs during light and part throttle loads while marketing spends so much time chanting about pk hp, it is then inevitably intriguing to explore what sorts of mpg occurs at sustained loads at rated hp. A 1/4 mi pass presents an interesting scenario in that we naturally have a distance and elapsed time that can be directly tied to the hp that is coming out of a given engine. It is fascinating that we may actually be talking about 1 mpg or even less than that.

Last edited by randycat99; 11-20-2011 at 07:53 PM.
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#8 (permalink) Old 11-20-2011, 10:25 PM
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I'm not sure what it would work out to, but I typically leave home with a half tank of gas on race day. I then drive roughly 50 miles to the track, make 12-22 quarter mile runs, at that point I'm usually down to a 1/4 tank. I then fill up on the way home.

My 1968 340 Dart usually averaged about 7 miles per gallon, unless I got on it a lot then it got less. I would swear you could see the gas gage going down when you would stomp on it.

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#9 (permalink) Old 11-21-2011, 01:17 PM
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I reset my MPG calculator and got 14mpg at the track after running 12 runs.

not to bad.


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#10 (permalink) Old 11-21-2011, 02:27 PM
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just for comparison the car in my avatar,
nitro funny car burns 12 gallons per pass
oh yea its a Dodge Charger with a Hemi
500 cubic inches

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