Oil Coolers

Today’s high performance vehicles pack a lot of power in a smaller package. In order to save both weight and space, the typical OEM cooling system is designed for “normal” driving conditions. When driven hard for extended periods, the cooling system may prove less than adequate. Earl’s offers the solution to marginal cooling systems—race proven lightweight and efficient oil coolers designed to fit in the smallest practical space.

Any performance vehicle can benefit from the TEMP-A-CURE™ difference. Tow vehicles, motor homes, passenger cars and motorcycles can realise extended engine and/or transmission efficiency and life with an Earl’s TEMP-A-CURE™oil cooler.

Racing cars have always required oil coolers. Since World War II, most racing cars, world wide, have utilized brazed aluminum “modular” oil coolers. The basic design of the modular oil cooler dates back to the early 1930s when it was developed for use with the Rolls Royce Merlin engine that powered the Spitfires and Hurricanes that won the Battle of Britain. This type of cooler with its internal turbulator plates and dense air fins provides maximum liquid side and air side surface area. The large collector tanks ensure minimum flow restriction. The fully brazed construction results in the most efficient possible thermal transfer path between liquid and air. All of this adds up to the most thermally efficient liquid to- air heat exchanger available.

 

 

NARROW Part Number Description Height Face Width Fitting Centres Body Width Thickness 20700 7 Row Oil Cooler Core - Narrow Grey 2" 4" 5-1/8" 8-1/4" 2" 21000 10 Row Oil Cooler Core - Narrow Grey 3" 4" 5-1/8" 8-1/4" 2" 21300 13 Row Oil Cooler Core - Narrow Grey 4" 4" 5-1/8" 8-1/4" 2" 21600 16 Row Oil Cooler Core - Narrow Grey 5" 4" 5-1/8" 8-1/4" 2" 21900 19 Row Oil Cooler Core - Narrow Grey 5-7/8" 4" 5-1/8" 8-1/4" 2" 22500 25 Row Oil Cooler Core - Narrow Grey 7-3/4" 4" 5-1/8" 8-1/4" 2" 23400 34 Row Oil Cooler Core - Narrow Grey 10-1/2" 4" 5-1/8" 8-1/4" 2" 24200 42 Row Oil Cooler Core - Narrow Grey 13" 4" 5-1/8" 8-1/4" 2" 25000 50 Row Oil Cooler Core - Narrow Grey 15-1/2" 4" 5-1/8" 8-1/4" 2" 26000 60 Row Oil Cooler Core - Narrow Grey 18-1/2" 4" 5-1/8" 8-1/4" 2"

WIDE
Part Number	Description	Height	Face Width	Fitting Centres	Body Width	Thickness
40700	7 Row Oil Cooler Core - Wide Grey	2"	9"	9-3/4"	13"	2"
41000	10 Row Oil Cooler Core - Wide Grey	3"	9"	9-3/4"	13"	2"
41300	13 Row Oil Cooler Core - Wide Grey	4"	9"	9-3/4"	13"	2"
41600	16 Row Oil Cooler Core - Wide Grey	5"	9"	9-3/4"	13"	2"
41900	19 Row Oil Cooler Core - Wide Grey	5-7"8	9"	9-3/4"	13"	2"
42500	25 Row Oil Cooler Core - Wide Grey	7-3/4"	9"	9-3/4"	13"	2"
43400	34 Row Oil Cooler Core - Wide Grey	10-1/2"	9"	9-3/4"	13"	2"
44200	42 Row Oil Cooler Core - Wide Grey	13"	9"	9-3/4"	13"	2"
45000	50 Row Oil Cooler Core - Wide Grey	15-1/2"	9"	9-3/4"	13"	2"
46000	60 Row Oil Cooler Core - Wide Grey	18-1/2"	9"	9-3/4"	13"	2"

EXTRA-WIDE
Part Number	Description	Height	Face Width	Fitting Centres	Body Width	Thickness
80700	7 Row Oil Cooler Core - Xwide Grey	2"	11"	12-1/8"	14"	2"
81000	10 Row Oil Cooler Core - Xwide Grey	3"	11"	12-1/8"	14"	2"
81300	13 Row Oil Cooler Core - Xwide Grey	4"	11"	12-1/8"	14"	2"
81600	16 Row Oil Cooler Core - Xwide Grey	5"	11"	12-1/8"	14"	2"
81900	19 Row Oil Cooler Core - Xwide Grey	5-7/8"	11"	12-1/8"	14"	2"
82500	25 Row Oil Cooler Core - Xwide Grey	7-3/4"	11"	12-1/8"	14"	2"
83400	34 Row Oil Cooler Core - Xwide Grey	10-1/2"	11"	12-1/8"	14"	2"
84200	42 Row Oil Cooler Core - Xwide  Grey	13"	11"	12-1/8"	14"	2"
85000	50 Row Oil Cooler Core - Xwide  Grey	15-1/2"	11"	12-1/8"	14"	2"
86000	60 Row Oil Cooler Core - Xwide  Grey	18-1/2"	11"	12-1/8"	14"	2"

 

TEMP-A-CURE™ Coolers are manufactured with removable, interchangeable fittings that feature a contoured port side with an O-ring seal for worry free performance.Available in AN and BSP sizes.
Cooler Adapters

Part No	Thread	Port Size
585106	-6	-10
585108	-8	-10
585110	-10	-10
585112	-12	-10
5851GEC	3/8” BSP	-10
585FAD	½” BSP	-10

 

EARL’S TEMP-A-CURE™ OIL COOLERS OFFER THE FOLLOWING ADVANTAGES:

1. Manufactured in the U.S.A. from aircraft spec aluminum alloy, using the latest vacuum brazing technology.
   
   
2. Corrugated screen internal turbulator plates increase both thermal efficiency and mechanical strength resulting in the most efficient, smallest and lightest practical package (typically half the size of traditional tube & fin cooler).
   
   
3. Manufactured from thin aluminum plates for fastest possible heat transfer.
   
   
4. Inlet and outlet fittings seal with an o-ring to the top plate assembly for worry free performance.
   
   
5. Designed for the range of oil flows and air speeds encountered in high performance automobiles.
   
   
6. Available in three widths with inlet and outlet fittings, male AN -6 to -16
   
   
7. Every cooler is pressure checked to 175 psi. Periodic samples are burst tested to 350 psi
   
   

EARL’S DESIGN For many years, professional racers have been using modular style oil coolers almost exclusively. Virtually every Formula One, Indy and GTP or Trans-Am car depends on these type units for engine and transaxle cooling. Temp-A-Cure™ coolers have been developed specifically for use in all types of engines and transmissions subjected to temperature extremes, including competition and high performance uses. They are designed for the range of air speeds and oil flows normally encountered in automotive use, but built to aircraft standards of quality. They are constructed of high grade aluminum and are completely furnace brazed to insure the most thermally efficient joint possible between the oil tubes and air fins. The internal design of the oil tubes and the large area collector tanks provide maximum surface area with minimum pressure drop. The highly concentrated air fins offer maximum heat transfer to the outside air.

TYPICAL TUBE & FIN DESIGN The tube and fin cooler has little to offer in the way of efficient oil cooling. Its typical serpentine design has a large pressure drop due to the tube length and to the restricted bends. The tube and fin cooler cannot approach the cooling efficiency of Earl’s Fin density and oil side to air side mechanical bond.

AIR VELOCITY: THE CRITICAL FACTOR IN HEAT DISSIPATION

EARL’S TEMP-A-CURE OIL COOLERS are designed to efficiently use all of the air that passes through them. The center chart below shows that a Temp-A-Cure cooler of comparable size is between two and three times more efficient in terms of heat rejection as a typical tube and fin type cooler. (“B”) Cooler “A” in our chart below is of a popular stamped dish plate design; where the dish plates are the only components—no fins and no corrugated screen. This design, while extremely attractive to the manufacturer, sacrifices efficiency of heat transfer for ease of assembly. The right hand chart below represents testing to determine pressure drop. It shows that the Temp-A-Cure cooler can handle a larger volume of oil (four times the volume!) with less than half the pressure drop of a typical tube and fin style oil cooler.

Earl’s Temp-A-Cure oil coolers are properly termed “air to liquid heat exchangers”. In order to operate efficiently, they must be mounted in a stream of moving air at ambient temperature. It is not a good idea to mount the oil cooler behind the water radiator where it will receive only heated air. It is not enough to lead air to the cooler—the heated air must have somewhere to go after it passes through the core. Remember, air always obeys the immutable laws of fluid dynamics. Simply put, air will only flow from a region of relatively high pressure to a region of relatively low pressure. Any attempt on our part to convince it to do otherwise is doomed to failure.