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Drag racing ONLY....To run a thermostat or not? #1110943
11/10/11 06:24 PM 11/10/11 06:24 PM
Joined: Jan 2005
Posts: 45
Forest Grove,Oregon
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beepbeepdon Offline OP
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beepbeepdon  Offline OP
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I wanted to get a consensus as to what you all think regarding running a thermostat.Who runs one,who doesnt and who runs one with the center cut out( attemping to "slow" the flow as I was told by someone.Obviously we should always run straight water and maybe Water Wetter but no coolant.....My question is should I run one or not?....Thanks for your time
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110944
11/10/11 06:28 PM 11/10/11 06:28 PM
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Posts: 20,626
in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
I do not run one but I have the center cut out of one so I can build some heat. Electric water pump and fan, it's the only way to really control the temp. I like to start my burnout at 130, around 140 when I stage.

"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110945
11/10/11 06:30 PM 11/10/11 06:30 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline
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I run one with the center out of it and distill water. But I think this depends on your car and cooling sys. and how you run the car. Do you have elec fan..water pump ? are they tie together and run both at the same time ? I do beleve that you need something in there to help keep it in radiator so it will cool it ?
Re: Drag racing ONLY....To run a thermostat or not? [Re: VernMotor] #1110946
11/10/11 06:33 PM 11/10/11 06:33 PM
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Posts: 20,626
in a cattle trailer down by th...
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Guitar Jones Offline
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in a cattle trailer down by th...
With an electric pump you aren't moving the water that fast, I could do with out the restrictor but I don't like leaving the water pump off with the engine running. The fan and pump should be able to work seperately. I run just the pump to get to temp and then turn the fan on. It's on a 3 position rocker switch, off, pump only or fan and pump.

"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110947
11/10/11 06:39 PM 11/10/11 06:39 PM
Joined: Jan 2003
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Renton Washington
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Triple Threat Offline
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Renton Washington
I run nothing at all.

-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110948
11/10/11 06:40 PM 11/10/11 06:40 PM
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
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If you have an electric water pump, don't run a thermostat or a restrictor.

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
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110949
11/10/11 06:46 PM 11/10/11 06:46 PM
Joined: Jan 2005
Posts: 45
Forest Grove,Oregon
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beepbeepdon Offline OP
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Forest Grove,Oregon
Thanks everyone...I run a stock aluminum water pump and electric fan ( summit's with relay on a toggle)....No cooling problems unless I sit and idle too long (Havent let it get higher than 200 yet so not sure if I have the right setup or not....Just got the car at the track this past summer than cam failure set in....Thats a whole different story tho.....Thanks again
Re: Drag racing ONLY....To run a thermostat or not? [Re: an8sec70cuda] #1110950
11/10/11 06:48 PM 11/10/11 06:48 PM
Joined: Aug 2004
Posts: 2,128
sweden
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sshemi Offline
top fuel
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Quote:

If you have an electric water pump, don't run a thermostat or a restrictor.



please explain why not.
Doesnt an electric pump move more water than a mech at idle?
Im about to use both a stat and the heater.
Re: Drag racing ONLY....To run a thermostat or not? [Re: sshemi] #1110951
11/10/11 07:01 PM 11/10/11 07:01 PM
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
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Marion, South Carolina [><]
Quote:

Quote:

If you have an electric water pump, don't run a thermostat or a restrictor.



please explain why not.
Doesnt an electric pump move more water than a mech at idle?
Im about to use both a stat and the heater.


You can leave the pump running and completely cool the motor down. If the thermostat closes, you can't circulate water.
Meziere says NOT to run a thermostat w/ any of their pumps.

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
Re: Drag racing ONLY....To run a thermostat or not? [Re: sshemi] #1110952
11/10/11 10:09 PM 11/10/11 10:09 PM
Joined: Oct 2010
Posts: 2,405
Ambridge, Pa.
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rickraw Offline
top fuel
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Ambridge, Pa.
i have a electric pump. mainly street driven. no heater. 180 stat with a 1/8 hole drilled near opening. been running this for years, 170 down the road, 200 sitting in traffic. racing, 180. no problems. stay safe, seeya.
Re: Drag racing ONLY....To run a thermostat or not? [Re: an8sec70cuda] #1110953
11/10/11 10:31 PM 11/10/11 10:31 PM
Joined: Feb 2004
Posts: 6,257
acworth / N. georgia - south e...
cheapstreetdustr Offline
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acworth / N. georgia - south e...
Quote:

Quote:

Quote:

If you have an electric water pump, don't run a thermostat or a restrictor.



please explain why not.
Doesnt an electric pump move more water than a mech at idle?
Im about to use both a stat and the heater.


You can leave the pump running and completely cool the motor down. If the thermostat closes, you can't circulate water.
Meziere says NOT to run a thermostat w/ any of their pumps.



you cant circulate water in and or out of the radiator..but it still circulates through the pump-engineblock-heads and intake..fwiw.
cheapst
If you street drive the car id expect you'll realise you need a thermostat.. but this was stated race only in the heading..

cheapst

365" Iron J heads,,3480lbs best 1.39 60ft on SS springs.10.54,124 mph ...6.67 1/8th et.average 60fts 1.46 w/ small cam &.063 no2 pill tagged & insured
[image][/image]
Re: Drag racing ONLY....To run a thermostat or not? [Re: cheapstreetdustr] #1110954
11/10/11 11:36 PM 11/10/11 11:36 PM
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Triple Threat Offline
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Quote:


If you street drive the car id expect you'll realise you need a thermostat.. but this was stated race only in the heading..

cheapst



My car gets driven year round, with no thermostat.

-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110955
11/11/11 12:49 AM 11/11/11 12:49 AM
Joined: Oct 2003
Posts: 7,506
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Crizila Offline
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Crizila  Offline
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Az
Race only, forget the stat.

Fastest 300
Re: Drag racing ONLY....To run a thermostat or not? [Re: Crizila] #1110956
11/11/11 12:58 AM 11/11/11 12:58 AM
Joined: Nov 2004
Posts: 16,471
On the run…
BloFish Offline
I Live Here
BloFish  Offline
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On the run…
Street strip, leave it in?

It really doesn't matter whether you win or lose…
as long as you look good doing it!

‘65 A100
‘69 ‘Cuda
‘73 Vega GT
‘06 Mega Cab
‘14 Mercedes SLK
Re: Drag racing ONLY....To run a thermostat or not? [Re: BloFish] #1110957
11/11/11 03:09 AM 11/11/11 03:09 AM
Joined: Jul 2011
Posts: 180
long island newyork
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Abodyjohn88 Offline
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long island newyork
no thermostat in mine either and i drive it year round. takes a few minutes to warkm up but rarley gos above 200 in bumper to bumper traffic
Re: Drag racing ONLY....To run a thermostat or not? [Re: Abodyjohn88] #1110958
11/11/11 09:40 AM 11/11/11 09:40 AM
Joined: Oct 2006
Posts: 4,590
Indy
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joshking440 Offline
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Indy
you dont need a thermostat....and you dont need a restrictor. the holes in the heads will restrict the water
Re: Drag racing ONLY....To run a thermostat or not? [Re: beepbeepdon] #1110959
11/11/11 09:59 PM 11/11/11 09:59 PM
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
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Just-a-dart Offline
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Glendora Ca.
To me this is not a one answer fits all question, depends on your set-up. Small rad & gas - no stat. Big rad & e85 bracket car makes it easier to keep it at the same starting line temp.


"Just a Bracket car dressed up like a streetcar"
Re: Drag racing ONLY....To run a thermostat or not? [Re: Just-a-dart] #1110960
11/12/11 02:23 AM 11/12/11 02:23 AM
Joined: Jan 2003
Posts: 7,477
Minnesota
Hemi_Joel Offline
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Minnesota
The only reason to restrict flow is to make the engine run hotter, or to prevent pump pressure from blowing the cap open on a top tank radiator. You can not make the engine run cooler by restricting flow. That is an old wives tale that has been disproven by scientific testing. Higher flow = lower, more consistant temps in the heads, reduces steam pockets and reduces detonation. Proceed acordingly.

[img]http://i.imgur.com/boeexFms.jpg[/img]
31 Plymouth Coupe, 392 Hemi, T56 magnum
RS23J71
RS27J77
RP23J71
RO23J71
WM21J8A
I don't regret the things I've done. I only regret the things I didn't do.
"Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
Re: Drag racing ONLY....To run a thermostat or not? [Re: Hemi_Joel] #1110961
11/12/11 06:12 AM 11/12/11 06:12 AM
Joined: Aug 2004
Posts: 2,128
sweden
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sshemi Offline
top fuel
sshemi  Offline
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Joined: Aug 2004
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sweden
Quote:

The only reason to restrict flow is to make the engine run hotter, or to prevent pump pressure from blowing the cap open on a top tank radiator. You can not make the engine run cooler by restricting flow. That is an old wives tale that has been disproven by scientific testing. Higher flow = lower, more consistant temps in the heads, reduces steam pockets and reduces detonation. Proceed acordingly.



Is that really a fact?
I believe that if water flows slow through the rad it will be cooler entering the motor.

Btw i have always used a stat with a mech pump.
I even used a stat on my hemi with elec pump seemed to work but got too little run time to say for sure
Re: Drag racing ONLY....To run a thermostat or not? [Re: sshemi] #1110962
11/12/11 11:59 AM 11/12/11 11:59 AM
Joined: Oct 2003
Posts: 7,506
Az
Crizila Offline
master
Crizila  Offline
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Posts: 7,506
Az
Quote:

Quote:

The only reason to restrict flow is to make the engine run hotter, or to prevent pump pressure from blowing the cap open on a top tank radiator. You can not make the engine run cooler by restricting flow. That is an old wives tale that has been disproven by scientific testing. Higher flow = lower, more consistant temps in the heads, reduces steam pockets and reduces detonation. Proceed acordingly.



Is that really a fact?
I believe that if water flows slow through the rad it will be cooler entering the motor.

Btw i have always used a stat with a mech pump.
I even used a stat on my hemi with elec pump seemed to work but got too little run time to say for sure

Yes, it's a fact. The more times you can pass it through the rad, the more heat will be removed from the coolant.

Fastest 300
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