PF22 Oil System Design and Manufacturing
The stock Yamaha WR450F does not log oil pressure. To "check" oil pressure you crack a screw when the engine is idling and watch oil weep slowly...
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Obviously not good for a racecar that is seeing 2+ lateral G's.
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The easiest location to measure both temperature and pressure was at the oil filter cap.
I reverse engineered the oil filter cap to include a port for a 0-5V fluid temp sensor, as well as a port for a pressure tap.
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It was designed to be machined in 2 ops on a 3-axis Hass VF4. With the O-ring groove made on a manual lathe. I could have made the part lighter, but having flats to grab onto for OP 2 was nice!
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I made the CAM for this in Fusion 360.
Started as a shell milled block. This is after OP 1.
Completed part. Compared to original.
Data is cool.
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Oil temps getting pretty hot, over the course of an endurance.
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Oil pressure looks good vs Lateral Acceleration.
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Oil Pressure vs RPM vs Oil Temp shows pump performance.
A drybrake fitting was used as a drain plug. Getting the new members to blow into the catch can to pressurize the crank case made oil changes in less than 2 mins possible!
Test cadence UP!