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Dynomite · 01-25-2014

Oil Temperature Shuttle Valve Open (HOT)............................Oil Termperature Shuttle Valve Closed (COLD)

Oil Cooler Bypass Valve Inside..................................................Oil Cooler Bypass Valve Outside
This valve raises the pressure a bit on the flow
trying to bypass the oil cooler making sure some
oil does go through the oil cooler.

Oil Temperature Control Valve Compensation..............Oil Filter Adapter (Oil Temperature Valve Housing)
The orifice allows the valve to move
without being hydraulically locked in place.

5. Oil Flow Paths.

COLD - Oil Temperature Less than 203 deg F.
a. The Oil is pushed up from the bottom Port on the Oil Filter Adapter Housing past the TOP Oil Cooler Port which is ALWAYS OPEN.
b. The Oil then is pushed through the Top Opening of the Oil Temperature Control Valve to the bottom of the Temperature Control Valve Port.
c. The Oil is also pushed against the Oil Cooler Bypass Valve which it will not open since the path through the Temperature Control Valve Port is Open.
d. Some Oil flows through the Oil Cooler back into the Bottom Oil Cooler Port since the Bottom of the Temperature Control Valve has a Half Moon Port that is Always Open.
e. The Oil then pushed up through the Oil Filter Outside Diameter and also against the Oil FIlter Bypass Valve just in case the Oil Filter is too Restrictive.
d. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows.
See Timing Chain Idler Sprocket Lubrication and Installation

WARM - Oil Temperature greater than 203 deg F but less than 266 deg F.
a. The direct Oil Path to the Oil Filter through the Oil Temperature Control Valve is not yet closed but is becoming Restrictive.
b. The Bottom Port of the Oil Temperature Control Valve is Opening beyond the Half Moon Port.
c. The Oil Path around the Oil Temperature Control Valve through the Oil Cooler Bypass Valve may come into play.
d. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows.
See Timing Chain Idler Sprocket Lubrication and Installation

HOT - Oil Temperature greater than 266 deg F.
a. The Top of the Oil Temperature Control Valve Port Through the Oil Temperature Control Valve is now completely Closed.
b. All Oil is directed through the Oil Cooler (Top Oil Cooler Port) or through the Oil Cooler Bypass Valve around (outside) the top of the Oil Temperature Control Valve.
c. The Bottom of the Oil Temperature Control Valve Port is now completely open allowing Oil to go from the Oil Cooler through the bottom of the Oil Temperature Control Valve directly to the Oil Filter and Oil Filter Bypass Valve.
d. Some Oil passing through the Oil Cooler Bypass Valve will flow directly to the Oil Filter and Oil Filter Bypass Valve depending on the Restrictions to Oil Flow through the Oil Cooler.
e. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows.
See Timing Chain Idler Sprocket Lubrication and Installation

6. There IS an Oil Level Sensor on the 91'-95' ZR-1 Oil Pan.

The Oil Pan for 1990, 91 & 92 are interchangable with the only difference being, the 1990 LT5 engine was not equipped with a Low Oil Level Sensor. The extra material was cast into the pan but not machined for the screw-in sensor. As such, the oil level indicator would not be functional if the 1990 oil pan is used for 1991 & 1992 applications Oil Level Sensor TIPS

Brass Oil Level Sensor 93'-95' Jerrys Brass Oil Level Sensor 93' to 95'

Plastic oil Level Sensor 91'-92' Summit Racing Oil Level Sensor
Jerrys Plastic Oil Level Sensor

Last UPDATE of post 14 Dec, 2018

01-25-2014	#14
Dynomite Join Date: Aug 2009 Location: South Dakota/California Posts: 3,788	Oil Filter Adapter Functions Continued Oil Temperature Shuttle Valve Open (HOT)............................Oil Termperature Shuttle Valve Closed (COLD) Oil Cooler Bypass Valve Inside..................................................Oil Cooler Bypass Valve Outside This valve raises the pressure a bit on the flow trying to bypass the oil cooler making sure some oil does go through the oil cooler. Oil Temperature Control Valve Compensation..............Oil Filter Adapter (Oil Temperature Valve Housing) The orifice allows the valve to move without being hydraulically locked in place. 5. Oil Flow Paths. COLD - Oil Temperature Less than 203 deg F. a. The Oil is pushed up from the bottom Port on the Oil Filter Adapter Housing past the TOP Oil Cooler Port which is ALWAYS OPEN. b. The Oil then is pushed through the Top Opening of the Oil Temperature Control Valve to the bottom of the Temperature Control Valve Port. c. The Oil is also pushed against the Oil Cooler Bypass Valve which it will not open since the path through the Temperature Control Valve Port is Open. d. Some Oil flows through the Oil Cooler back into the Bottom Oil Cooler Port since the Bottom of the Temperature Control Valve has a Half Moon Port that is Always Open. e. The Oil then pushed up through the Oil Filter Outside Diameter and also against the Oil FIlter Bypass Valve just in case the Oil Filter is too Restrictive. d. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows. See Timing Chain Idler Sprocket Lubrication and Installation WARM - Oil Temperature greater than 203 deg F but less than 266 deg F. a. The direct Oil Path to the Oil Filter through the Oil Temperature Control Valve is not yet closed but is becoming Restrictive. b. The Bottom Port of the Oil Temperature Control Valve is Opening beyond the Half Moon Port. c. The Oil Path around the Oil Temperature Control Valve through the Oil Cooler Bypass Valve may come into play. d. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows. See Timing Chain Idler Sprocket Lubrication and Installation HOT - Oil Temperature greater than 266 deg F. a. The Top of the Oil Temperature Control Valve Port Through the Oil Temperature Control Valve is now completely Closed. b. All Oil is directed through the Oil Cooler (Top Oil Cooler Port) or through the Oil Cooler Bypass Valve around (outside) the top of the Oil Temperature Control Valve. c. The Bottom of the Oil Temperature Control Valve Port is now completely open allowing Oil to go from the Oil Cooler through the bottom of the Oil Temperature Control Valve directly to the Oil Filter and Oil Filter Bypass Valve. d. Some Oil passing through the Oil Cooler Bypass Valve will flow directly to the Oil Filter and Oil Filter Bypass Valve depending on the Restrictions to Oil Flow through the Oil Cooler. e. The Oil is then pushed out the center Oil Filter Adapter Fitting (M20x1.5) past the Oil Pressure Sensor for Dash Gauge, past the Oil Temperature Sensor, and past the Oil Pressure Switch Light on Dash Sensor out the Top of the Bottom Ports of the Oil Filter Housing Adapter to the Crankshaft and Top End Camshafts. The Oil pressurizes and lubricates the Timing Chain Tensioners and Timing Chains as the oil flows. See Timing Chain Idler Sprocket Lubrication and Installation 6. There IS an Oil Level Sensor on the 91'-95' ZR-1 Oil Pan. The Oil Pan for 1990, 91 & 92 are interchangable with the only difference being, the 1990 LT5 engine was not equipped with a Low Oil Level Sensor. The extra material was cast into the pan but not machined for the screw-in sensor. As such, the oil level indicator would not be functional if the 1990 oil pan is used for 1991 & 1992 applications Oil Level Sensor TIPS Brass Oil Level Sensor 93'-95' Jerrys Brass Oil Level Sensor 93' to 95' Plastic oil Level Sensor 91'-92' Summit Racing Oil Level Sensor Jerrys Plastic Oil Level Sensor Last UPDATE of post 14 Dec, 2018 Last edited by Dynomite; 10-07-2018 at 01:20 PM.