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Re: Still running hot in traffic with the new aluminum rad
[Re: AHall]
#231983
03/08/09 06:04 PM
03/08/09 06:04 PM
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Anonymous
Unregistered
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Anonymous
Unregistered
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Going back to the original stuff probably will help him somewhat.
It runs OK at idle when the air is being pulled through from the backside of the radiator, not being pushed through the condenser.
It heats up at speed.
Aluminum radiators like more airflow than copper/brass.
He has a very restrictive condenser and cooler in front of the radiator.
The aluminum radiator is going to be quite a bit more hurt by the airflow restriction than the copper/ brass one, so it should get better going back.
The best solution is to get rid of the condenser and use the aluminum radiator with good airflow.
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Re: Still running hot in traffic with the new aluminum rad
[Re: CrAlt]
#231985
03/08/09 06:06 PM
03/08/09 06:06 PM
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Joined: Nov 2007
Posts: 21,814
Kirkland, Washington
Pacnorthcuda
Too Many Posts
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Too Many Posts
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Posts: 21,814
Kirkland, Washington
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Quote:
This
I wouldn't be buying the MP 5 blade if I was having cooling problems. Use a 7 blade. They even advertise the HP savings with the 5 blade (even over stock clutch units)...the only way to save HP is by moving LESS air.
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Re: Still running hot in traffic with the new aluminum
[Re: AHall]
#231988
03/08/09 06:26 PM
03/08/09 06:26 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
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Quote:
But damn if this heat issue isnt bugging the hell out of me. Im taching 3000 RPM at 50 mph.
When I got home I popped the hood and grabbed the upper radiator hose going from the thermostat to the top of the radiator and it was hard as a rock. I let it cool, just went out there and it was squishy-- what does that indicate? Is my thermostat stuck?
That's a pretty high RPM for that RPM and 50mph ?
The hose should he hard since the system is under pressure , thats a good ting , and it should get soft once the car cools down as the pressure is much less if not gone .
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Re: Still running hot in traffic with the new aluminum rad
[Re: stumpy]
#231990
03/08/09 06:28 PM
03/08/09 06:28 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
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Quote:
No. A clooged heater core would just mean no heat inside. Get your rpms down and get the slippage cured. Both of those cause excessive heat.
But it looks like he has a seperate trans cooler so the trans will have less of an effect on the cooling system , or is it plumbed into the rad also ?
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Re: Still running hot in traffic with the new aluminum rad
[Re: stumpy]
#231991
03/08/09 06:30 PM
03/08/09 06:30 PM
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Joined: Jan 2003
Posts: 74,942
U.S.S.A.
JohnRR
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Quote:
If the problem was at low speed I could see the a/c condenser and trans cooler being the problem but his trouble is at highway speeds which should rule that out.
That's an air flow issue thru the rad .Here's a test , pull that fan setup out of the car and go for a ride ...
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Re: Still running hot in traffic with the new aluminum rad
[Re: stumpy]
#231992
03/08/09 07:51 PM
03/08/09 07:51 PM
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Joined: Mar 2003
Posts: 9,096
Rogue River, OR
Jeremiah
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Joined: Mar 2003
Posts: 9,096
Rogue River, OR
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Quote:
What will that show other than that the water moves.. You already know you don't have a problem at idle.
If for some reason the cylinder pressure is getting into the cooling system you might see some bubbles coming up with the car warmed up and radiator cap off. I have seen this type of issue cause a runaway temp condition that would only happen if the car was driven on the highway and then had to sit in traffic, i.e. at the end of an exit on Hwy 75 at 5pm.
Just a thought... 
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Re: Still running hot in traffic with the new aluminum rad
[Re: CrAlt]
#231995
03/08/09 08:32 PM
03/08/09 08:32 PM
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Joined: Oct 2003
Posts: 11,684
W. Kentucky
justinp61
I Live Here
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I Live Here
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Posts: 11,684
W. Kentucky
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I had over heating problems on my aluminum headed small block Dart a few years ago. It had a new replacement radiator with a Flex o Lite Black Magic electric fan on it, standard wp and 180* thermostat. I went to a new aluminum radiator with a new Flex o Lite thin fan, 2700 cfm. It still ran hot so I changed to a Flow Kooler wp and a high flow 160* thermostat, still hot. The fix was a MP (5 blade) viscous fan package and a factory shroud that I modified to fit the aluminum radiator. My car doesn't have air so it's not apples to apples, just my experience . Edit** This car has 4.30 gears and a 9.5" 4400 converter.
Last edited by justinp61; 03/08/09 08:35 PM.
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Re: Still running hot in traffic with the new aluminum rad
[Re: CrAlt]
#231998
03/08/09 09:31 PM
03/08/09 09:31 PM
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Joined: Jan 2003
Posts: 32,909
Grand Prairie,Texas
stumpy
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Grand Prairie,Texas
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The condenser isn't blocked up.The picture makes it look bad but it's not. There is a good deal of room between the radiator and the condenser and there is space between the cooler and condenser. There is also plenty of air flow through the grille and under the bumper. He also has a air dam that is directing air up into the front. Air to the radiator isn't his problem. The radiator has a shroud that covers at bunch of the back side and leaves air through the fan area only. As I said earlier the fan housing has very close ribbing that cuts down a bunch on air flow.. That is a big restriction.
AHall please post a better picture of the engine side of the radiator and fan for clarification. One more directly at it instead of from the side.
Last edited by stumpy; 03/08/09 09:43 PM.
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