Cooling issue help needed....
06-07-2012, 03:50 PM
#11
Senior Member
RACING JUNKIE
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
From one Mopar guy to another, NICE !
That big old flat airdam of a front motor plate COULD be hindering efficient airflow within the engine room at low speed or dead stop, literally creating an 'air dam'. With the car in motion, airflow under the car is helping to draw air out of the engine bay, which ain't happening at low speed.
Have you tried removing the hood and seeing what happens then ?
That big old flat airdam of a front motor plate COULD be hindering efficient airflow within the engine room at low speed or dead stop, literally creating an 'air dam'. With the car in motion, airflow under the car is helping to draw air out of the engine bay, which ain't happening at low speed.
Have you tried removing the hood and seeing what happens then ?
06-07-2012, 04:02 PM
#12
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Join Date: Nov 2008
Location: Niagara Falls, NY
Posts: 965
Originally Posted by DrivingMissDD
That big old flat airdam of a front motor plate COULD be hindering efficient airflow within the engine room at low speed or dead stop, literally creating an 'air dam'. With the car in motion, airflow under the car is helping to draw air out of the engine bay, which ain't happening at low speed.
07-11-2012, 07:48 AM
#13
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Join Date: Jan 2012
Posts: 628
Coupla things . . Put a 180° thermostat in it . . 160 is awfully cold for a performance engine.
And, dunno where you're at geographically, but 28° of timing sounds like it might be retarded enough at lower speeds to be heating . . With a Blower motor I'd be running somewhere around 32° minimum total . . . Unless the Distributor is locked out . .
A quick way to check your system and radiator is to take the temp at the thermostat housing and the top of the radiator. Should be within 10-15 degrees of the thermostat temp setting. Then check the temp at the bottom Radiator hose or Tank . . Should be no more than 140°. If it is, either the coolant is flowing through the radiator too fast to be cooled efficiently or you don't have enough radiator . . However, generally, with a standard water pump, this is a condition that shows at speed and at idle or low speed the temp should go down . . just the reverse of your problem.
Another "Dumb" thing to look at is the Water Pump Pulley. Too small and the car heats at speed, too big and it'll heat at low speeds or idle . . Back to water flow through the radiator. Had this problem with a Blown Street Rod . . that's why I'm bald now . . .
And, dunno where you're at geographically, but 28° of timing sounds like it might be retarded enough at lower speeds to be heating . . With a Blower motor I'd be running somewhere around 32° minimum total . . . Unless the Distributor is locked out . .
A quick way to check your system and radiator is to take the temp at the thermostat housing and the top of the radiator. Should be within 10-15 degrees of the thermostat temp setting. Then check the temp at the bottom Radiator hose or Tank . . Should be no more than 140°. If it is, either the coolant is flowing through the radiator too fast to be cooled efficiently or you don't have enough radiator . . However, generally, with a standard water pump, this is a condition that shows at speed and at idle or low speed the temp should go down . . just the reverse of your problem.
Another "Dumb" thing to look at is the Water Pump Pulley. Too small and the car heats at speed, too big and it'll heat at low speeds or idle . . Back to water flow through the radiator. Had this problem with a Blown Street Rod . . that's why I'm bald now . . .
07-12-2012, 04:59 PM
#14
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Join Date: Nov 2009
Posts: 267
Just an opinon from a circle track guy... we always have heat issues and have learned a lot about controlling them.
Run 1 to 1 pulleys, and a 28 to 32 lb rad cap.
We turn 8K or more down the straights without any problems losing hp, and we can still stay cool during the numerous cautions even if standing still. JMHO..
Run 1 to 1 pulleys, and a 28 to 32 lb rad cap.
We turn 8K or more down the straights without any problems losing hp, and we can still stay cool during the numerous cautions even if standing still. JMHO..
