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4
teMPeratUre sPeCifiCatiOns
Part Number
Activation Temperature
Stabilization Temperature
T4
180°F +/- 2°F
(82°C +/- 1°C)
185°F +/- 2°F
(85°C +/- 1°C)
T6
200°F +/- 2°F
(93°C +/- 1°C)
205°F +/- 2°F
(96°C +/- 1°C)
T7
212°F +/- 2°F
(100°C +/- 1°C)
215°F +/- 2°F
(101°C +/- 1°C)
nOtes
This product is not recommended for use with corrosive fluids.
• The integrated thermostat accelerates warm-up and ensures oil is at the
correct viscosity when used with a capable heat exchanger.
• Under no circumstances can the thermostat fail in such a way that oil
flow to the engine or transmission is blocked.
• ENV-131 is rebuildable. Should the unit fail, purchase a Rebuild Kit or
ship it back to Improved Racing for a professional rebuild.
Rebuild Kits can also be used to change temperatures.
• When the heat extraction rate of your heat exchanger is matched to the
heat load and flow-rate of the engine and engine oil, the oil temperature
returning to the engine will normally register at the Stabilization Tem-
perature shown above.
OPeratiOn & flOw diagraM
Figure 3 illustrates how the thermostat bypasses up to 98 percent of the total
oil flow back through the oil filter while the engine is warming up. This also
gradually warms the heat exchanger circuit to avoid thermal shock. Bypass
continues until engine oil reaches the activation temperature.
When the activation temperature is reached, the internal bypass valve
gradually closes until all oil flows through the heat exchanger circuit. This is
shown in Figure 4.
