Thermopellet Bypass
Although this modification is simply an available part, we recommended for all 86 and later 13B engines. Mazda factory engines are equipped with a device located in the front of the E-shaft called a "Thermopellet." It is a type of valve or thermostat which allows the engine oil which cools the rotors to bypass the rotors while the vehicle is warming up. This allowed the engine rotors to heat up faster allowing for better and more complete internal combustion when the engine is cold.
Although the manufacturers concept was a good for efficiency and emissions, the valve itself has been known to be problematic. If the valve fails and does not open after the engine oil has warmed up to operating temperature, it can cause the rotors to starve for oil cooling and cause massive overheating conditions.
REC manufactures a replacement part or "slug" which simply takes the place of the existing thermopellet. This allows the oil to take only one path. Although we lose the factory thermopellet function, it secures reliability and insures the rotors will never overheat.
Our bypass slug is unique to others we have seen in that it uses a sealing o-ring which sits in a groove to prevent oil from leaking past the E-shaft gallery.
List price: $16.00
Your price: $11.00