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Cold fuel
#3015619
02/15/22 12:09 PM
02/15/22 12:09 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Was racing down in Kentucky at a Mopar event last October.
Kinda had a pretty good handle on the numbers the car was running in different conditions at a new track( to me)
Next morning checked my fuel cell, almost out of gas(110)
I had purchased 5 gallons the day before, went back to hotel after racing, left the can sitting outside, dipped down into the upper 30’s over night, like it had the night before.
I dumped the “ cold fuel” into my cell, went up and shortly made a hit…
Car out of nowhere picked up 4 in the 1/8th.
Scratched my head about that, where in the world did that come from?
Only thing i can think of is the literally nearly ice cold fuel was the culprit.
If that situation ever repeats itself…..
Last edited by B3422W5; 02/15/22 12:10 PM.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Cold fuel
[Re: Clanton]
#3015639
02/15/22 12:48 PM
02/15/22 12:48 PM
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Joined: Jun 2006
Posts: 5,161
CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,161
CT
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Thats a lot but yes, I'd bet its the cold fuel. Engine masters did an episode trying to see if icing the intake helped, I forget all of the details but what they found was that it helped but it was because it made the carb bowls cold and the fuel was actually cooling the air charge alot, not that the cold manifold was lowering the IAT. The actual temp of the manifold was almost completely insignificant, but the fuel temp was important. Remember everyone used to run those moroso cool cans? 
Last edited by GTX MATT; 02/15/22 12:49 PM.
Now I need to pin those needles, got to feel that heat
Hear my motor screamin while I'm tearin up the street
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Re: Cold fuel
[Re: GTX MATT]
#3015641
02/15/22 12:59 PM
02/15/22 12:59 PM
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Joined: Aug 2003
Posts: 4,676
On the parachute mount
n20mstr
master
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master
Joined: Aug 2003
Posts: 4,676
On the parachute mount
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My buddy used to race drag bikes, they had small tanks (less than a gallon) He used to keep the fuel in a milk jug, in a cooler full of ice
....BAD A$$ STREET CAR.....
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Re: Cold fuel
[Re: B3422W5]
#3015645
02/15/22 01:08 PM
02/15/22 01:08 PM
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Joined: Dec 2006
Posts: 2,110
Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,110
Byron, NY
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Was racing down in Kentucky at a Mopar event last October.
Kinda had a pretty good handle on the numbers the car was running in different conditions at a new track( to me)
Next morning checked my fuel cell, almost out of gas(110)
I had purchased 5 gallons the day before, went back to hotel after racing, left the can sitting outside, dipped down into the upper 30’s over night, like it had the night before.
I dumped the “ cold fuel” into my cell, went up and shortly made a hit…
Car out of nowhere picked up 4 in the 1/8th.
Scratched my head about that, where in the world did that come from?
Only thing i can think of is the literally nearly ice cold fuel was the culprit.
If that situation ever repeats itself….. Any on e ever hear of a "COOL CAN" it was a 1gal ish sized can under the hood that the fuel line ran through. just before each run you would pack it with Ice to cool the fuel during the run...
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Cold fuel
[Re: GTX MATT]
#3015646
02/15/22 01:08 PM
02/15/22 01:08 PM
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Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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I have a friend that tried a Moroso cool can years ago. He said when he packed it with ice, it would make his fuel pressure drop from 7 to around 3 psi. It still ran fine, but that bothered him so he removed the cool can. I have never used a cool can, but have any of you seen this? It makes sense since the fuel is cooler and denser. Do you reset the regulator so the pressure is back up to normal or what? They're one of those old school hot rod parts nobody uses anymore. 
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: Cold fuel
[Re: an8sec70cuda]
#3015647
02/15/22 01:11 PM
02/15/22 01:11 PM
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Joined: Dec 2006
Posts: 2,110
Byron, NY
W.I.N. Racing
top fuel
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top fuel
Joined: Dec 2006
Posts: 2,110
Byron, NY
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The early ones were nothing more than a can wrapped with cork with a metal lid that that just rested on top. Later versions were better insulated and sealed.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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Re: Cold fuel
[Re: W.I.N. Racing]
#3015650
02/15/22 01:20 PM
02/15/22 01:20 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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I think i actually ran a cool can on a car back in the 70’s it was kinda a thing most everybody did.
That said, the result i had that morning i think was way different than a cool can
I dumped gas in my cell that was probably 42-45 degrees and in short order was sucking that stuff into the motor.
You take a typical day, the fuel is never that cool, even a cool can( i doubt) will cool all the inbound fuel to that temp..although i could be wrong
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Cold fuel
[Re: B3422W5]
#3015664
02/15/22 02:25 PM
02/15/22 02:25 PM
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Joined: Oct 2015
Posts: 570
UK
rb446
mopar
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mopar
Joined: Oct 2015
Posts: 570
UK
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Carb heat plates, Cool cans, wooden carb spacers etc......The Rossi Challenger run by the Hausers over here had a cool can, watched a guy@ Santa Pod running 10.10's pack the manifold with Ice before a run and went into the 9's.....cool it, it works, has done for yonks.
1969 'Cuda 446ci, best 9.96@133.9 in 1990
1971 340 'Cuda, best 11.01@122.8 in 1987
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Re: Cold fuel
[Re: W.I.N. Racing]
#3015671
02/15/22 02:43 PM
02/15/22 02:43 PM
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Joined: Jan 2003
Posts: 19,363
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,363
Las Vegas
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Speaking in a glittering generality here but the colder the fuel the quicker you will be...We make every effort possible to keep the fuel as cold as possible in the heads up car. In a bracket car its not very practical honestly.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Cold fuel
[Re: justinp61]
#3015674
02/15/22 02:50 PM
02/15/22 02:50 PM
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Joined: Jan 2003
Posts: 11,711
Portage,michigan
B3422W5
OP
I Live Here
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OP
I Live Here
Joined: Jan 2003
Posts: 11,711
Portage,michigan
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Don, did the gas in the car and the can come from the same source? Was the carb tuned in hot weather? Same stuff. I tune for shoulder weather, early and late summer. Leave it alone for spring and fall. Bracket car..moves around the least doing that seems like.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight
418 BPE factory replacement headed stroker, 565 lift solid cam
Best so far, 10.40 @127 1/4
1.41 best 60 foot
6.60 at 103.90 1/8
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Re: Cold fuel
[Re: B3422W5]
#3015681
02/15/22 03:05 PM
02/15/22 03:05 PM
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Joined: Jan 2003
Posts: 17,844
S.E. Michigan
ZIPPY
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 17,844
S.E. Michigan
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I can't hang a number on it as I don't have that kind of experience.
But I remember seeing a someone else's test a little while back, entire intake and carb was iced during a dyno test.
Temp guns on the manifold showed it heated back up to where it was almost instantly,
as did the air temperature, But the carb and the fuel did not.
It picked up and they pointed to cold fuel, given all else.
Seems to agree.
Rich H.
Esse Quam Videri
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Re: Cold fuel
[Re: ZIPPY]
#3015702
02/15/22 04:29 PM
02/15/22 04:29 PM
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Joined: Jan 2003
Posts: 1,606
westerly, ri. usa
440lebaron
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,606
westerly, ri. usa
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cool cans are legal in nhra stock, moroso makes a polyurethane 65125, cannot be mounted on firewall, plumbing my stocker for one
65125 was 3/8 npt now 65127 #8 AN
Last edited by 440lebaron; 02/15/22 04:41 PM. Reason: #8
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Re: Cold fuel
[Re: dragracedr]
#3015816
02/15/22 09:36 PM
02/15/22 09:36 PM
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Joined: Jan 2003
Posts: 693
Dunnellon, FL
longram60
mopar
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mopar
Joined: Jan 2003
Posts: 693
Dunnellon, FL
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don't forget dry ice in the fuel cell. At a NHRA divisional race a couple of years ago, my fuel check after a qualifying run was marginal. The tech guy asked me if I had put dry ice in the fuel cell. It happens.
1979 AMC Spirit, NHRA Q/SA
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Re: Cold fuel
[Re: longram60]
#3015862
02/16/22 12:41 AM
02/16/22 12:41 AM
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Joined: Jan 2003
Posts: 20,177
Park Forest, IL
slantzilla
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,177
Park Forest, IL
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When we were racing my Buick we had a cool can on it. One day I pulled into staging when it was about 100 out. My buddy Russell pops the hood open, and pulls a can of Pepsi out of the cool can. People freaked out.
Last edited by slantzilla; 02/16/22 12:42 AM.
"Everybody funny, now you funny too."
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Re: Cold fuel
[Re: longram60]
#3015944
02/16/22 11:52 AM
02/16/22 11:52 AM
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Joined: Aug 2008
Posts: 4,069
Mo.
racerx
master
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master
Joined: Aug 2008
Posts: 4,069
Mo.
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don't forget dry ice in the fuel cell. At a NHRA divisional race a couple of years ago, my fuel check after a qualifying run was marginal. The tech guy asked me if I had put dry ice in the fuel cell. It happens. Dry ice .....interesting who does this work?
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