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External Oil Cooling Configuration Guide Adding
finned oil lines and external cooler on any 911 from '65 to '89
Finned oil lines¹ and the Widemouth oil cooler may be installed on all 911s produced between 1965 and 1989. They are a direct bolt-on for cars already equipped with the 1974 to 1989 style external thermostat and trombone, brass tube, or Carrera fender mounted oil cooler. Other configurations may require installation of additional plumbing and equipment to implement a complete oil cooling system. In general, cars not equipped with factory external coolers should upgrade to the 1974 to 1989 oil plumbing. Finned oil lines are available in two configurations; 74-89 type and pre-74 type. 74-89 type finned oil lines have female fittings at the thermostat end are designed for direct connection to the 74-89 style external thermostat. Pre-74 type finned oil lines have male fittings at the thermostat end to accommodate easy connection of fabricated flex hoses. Both types have male fittings at the fender end. Following is a table of sample solutions referenced to year and type of external thermostat equipped. Find the year of your car and its original equipment configuration in the table, then review the recommended solution and diagrams. Sample solutions show suggested oil plumbing configurations and recommend the correct finned oil line version.
¹ Patent pending
Sample Solutions -
ER = Elephant Racing finned oil lines, 74-89 type A = Factory oil line from thermostat to scavenge pump B = Factory S hose from oil tank to internal oil cooler C = 74 to 89 Factory flex hoses D = Factory oil line from thermostat to oil tank OT = Factory oil tank FT = 74-89 Factory external thermostat OC = Elephant Racing Widemouth oil cooler
Recommended configuration for these vehicles:
Notes - a) Pre 72 cars have 26mm fittings at the scavenge pump end of A. If so equipped, replace the case fitting with the later 30mm fitting Porsche #999 136 008 00. Use the later style 30mm line A. b) Pre 72 cars have 26mm fittings at the oil tank end of D. If so equipped, use our 26mm to 30mm adapter to convert to 30mm and use the later style 30mm line D. c) Several configurations of Line A exist, most are composed of two pieces joined by a fitting. Beginning in 75, line A routes differently than shown in the drawing. Any year 911 using early heat exchangers, SSIs, or headers should use the 74 two piece configuration routed as shown.
ER = Elephant Racing finned oil lines, pre-74 type A = Factory oil line from oil tank to scavenge pump B = Factory S hose from oil tank to internal oil cooler C = 74 to 89 Factory flex hoses CF = Custom fabricated flex hose D = Factory oil line from thermostat to oil tank OT = Factory oil tank FT = 69-71 Factory external thermostat OC = Elephant Racing Widemouth oil cooler
Recommended configuration for these vehicles:
Notes - a) Installation requires fabrication of two flexible hoses to connect finned oil lines to factory thermostat. Fabricated hoses require 30mm female hose ends and our 26mm to 30mm adapter at the thermostat end. b) Be sure to order pre-74 type Elephant Racing finned oil lines which are equipped with male fittings at both ends.
ER = Elephant Racing finned oil lines, pre-74 type A = Factory oil line from thermostat to scavenge pump B = Factory S hose from oil tank to internal oil cooler C = 74 to 89 Factory flex hoses CF = Custom fabricated flex hose D = Factory oil line from thermostat to oil tank OT = Factory oil tank FT = 72 Factory external thermostat / oil filter console OC = Elephant Racing Widemouth oil cooler
Recommend configuration for these vehicles:
Notes - a) Installation requires fabrication of two flexible hoses to connect finned oil lines to factory thermostat and oil tank. Fabricated hoses require 30mm female fittings at both ends. AN -16 hose is recommended. b) Be sure to order pre-74 type Elephant Racing finned oil lines which are equipped with male fittings at both ends and are shorter to accommodate 72 style oil tank.
ER = Elephant Racing finned oil lines, pre-74 type A = Factory oil line from thermostat to scavenge pump B = Factory S hose from oil tank to internal oil cooler C = 74 to 89 Factory flex hoses CF = Custom fabricated flex hose D = Factory oil line from thermostat to oil tank OT = Factory oil tank FT = 73 Factory external thermostat OC = Elephant Racing Widemouth oil cooler
Recommended configuration for these vehicles:
Notes - a) Installation requires fabrication of two flexible hoses to connect finned oil lines to factory thermostat. Fabricated hoses require 30mm female fittings both ends. AN -16 hose is recommended. b) Be sure to order pre-74 type Elephant Racing finned oil lines which are equipped with male fittings at both ends.
ER = Elephant Racing finned oil lines, pre-74 type. A = Factory oil line from oil filter to scavenge pump B = Factory S hose from oil tank to internal oil cooler C = 74 to 89 Factory flex hoses CF = Custom fabricated flex hose D = Factory oil line from thermostat to oil tank OT = Factory oil tank FT = 74 to 89 factory style external thermostat OC = Elephant Racing Widemouth oil cooler OF = Oil filter
Recommended configuration for these vehicles:
Notes - a) Installation requires fabrication of four flexible hoses to connect 74-89 style factory thermostat to oil tank, oil filter, and finned oil lines. Fabricated hoses require 30mm female fittings at both ends. AN -16 hose is recommended. b) Be sure to order pre-74 type Elephant Racing finned oil lines which are equipped with male fittings at both ends and are shorter to accommodate 72 style oil tank.
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