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Re: Engine temp before doing burn out?
[Re: moparacer]
#1641330
07/08/14 09:53 AM
07/08/14 09:53 AM
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Joined: Nov 2009
Posts: 2,177
ill
dennismopar73
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,177
ill
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Quote:
I go in the water at 150, try to stage around 160 and its usually 165-170 in the shut down.
Sounds like you need less jets
I stage the same , but tune carb for best heat mph down track by temp gained
You should see 25-30 rise in temp from leave to finish.
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Re: Engine temp before doing burn out?
[Re: dennismopar73]
#1641331
07/08/14 12:29 PM
07/08/14 12:29 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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On gas I used to pull into the burnout box at 150, on E85 I have to be at 165+ I've never had any luck running engines hotter and making more power, they always slow down. 
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Engine temp before doing burn out?
[Re: Monte_Smith]
#1641332
07/08/14 01:51 PM
07/08/14 01:51 PM
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Joined: Feb 2014
Posts: 655
Huntsville, AL
Airwoofer
mopar
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mopar
Joined: Feb 2014
Posts: 655
Huntsville, AL
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Quote:
Depends on if you are shooting for the easiest thing to maintain round to round or get the ultimate in performance.
No secret that hot oil and cold water make the most power. Been proven time and time again on the dyno.
With our heads up car, we keep a heating pad plugged in on the oil tank on everything but the hottest days and chill the motor between rounds to 100 degrees. We roll through the puddle at 100. Usually stage about 110 and it MIGHT make it to 120 by the time we hit the return road.
We have no radiator and no water pump. Just a small 2 gallon water tank, with a small bilge pump in it, that we put a mixture of water and ice in before we go up. Turn on the water after backing up from the burnout. We just added the water tank and used to run without circulating water at all and we DO run gas. We have a chiller in the trailer and can turn the car around in 10 minutes if we have to
Monte
Monte
I saw them in action last weekend in the finals on the last race of the night. Some body who was in between the guard rails at the tree probably tripped over the wires for the staging beams. Monte saw right away that the staging lights were not working in his lane and had Chad shut it down. The other guy kept his motor running a while as his lights were working just fine. When they finally decided that the timing would work, ole Monte stepped in and drug his red tennis show across the VHT and said that is where we will stage. They fired back up and I am pretty sure their temp thing was still on schedule while the other guy floundered.
It was no contest whatsoever. Gotta give ole Monte this, he is a cool cat at the tree.
Also the team has comms which is probably why they were able to cope so well. Another local guy in a Pro Mod had his chutes pop at the end of his burnout in eliminations and had no clue as they did not have radio comms, he was way past his backer since he blew out to half track and she was having a hard time running from the tree to back him up. he drove over his chutes despite everybody in the stands waving their arms not to. Eliminations and he went home with a broken car for the brake lines getting tangled.
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Re: Engine temp before doing burn out?
[Re: Monte_Smith]
#1641335
07/10/14 10:23 PM
07/10/14 10:23 PM
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Joined: Jan 2003
Posts: 16,934
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,934
NC
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Quote:
No secret that hot oil and cold water make the most power. Been proven time and time again on the dyno.
I agree.
There are other factors too. What clearances is your engine setup with? Do you run aluminum rods? What viscosity oil do you use?
For NA alcohol injected engines, I like some heat in the heads to better vaporize the fuel. I bracket race and go for consistancy.
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Re: Engine temp before doing burn out?
[Re: 440Jim]
#1641336
07/11/14 05:24 PM
07/11/14 05:24 PM
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Joined: Nov 2004
Posts: 6,890
North Alabama
Monte_Smith
master
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master
Joined: Nov 2004
Posts: 6,890
North Alabama
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If you have a 12.1 cast headed motor and then put alum heads on that same motor and run it at the same temp, you might loose some power, because the alum soaks up some heat........BUT, if you optimize the motor for the head change, ie increase compression, the cold motor will still make the most power. How many times you see stocker and super stockers "icing" the intake between rounds during class runoffs. There is a reason for that. Cold, dense air and fuel make more power, period, on gas. Hard to have cold dense fuel if the cylinder head is 200 degrees. The motor needs to be built for how you intend to race it. I always build my stuff to race cool, because I know it makes power.
And somebody above mentioned their car gains 30+ degrees making a 1/4 mile pass........wow that's a lot of heat gain. I personally have never seen anything jetted and timed correctly gain that much heat in 10 seconds or so
Monte
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Re: Engine temp before doing burn out?
[Re: Monte_Smith]
#1641337
07/11/14 08:01 PM
07/11/14 08:01 PM
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Joined: Feb 2009
Posts: 1,019
Finland
mafo
super stock
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super stock
Joined: Feb 2009
Posts: 1,019
Finland
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I run my engine very cold ,just need a little warm up not to stumble in the lights, but the burnout is enough, usually don t even show on the temp gauge 
-65 Valiant,420", all motor,2700#, dot tires, 8,42 @ 160,2
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