Why this is best:
* Accurate Reading: This location provides a reading of the coolant temperature after it's circulated through the engine block and head, offering a more representative average temperature. Locations further away, like on a hose, might give less accurate and more fluctuating readings.
* Consistent Temperature: The coolant in the intake manifold is well-mixed, leading to a steadier temperature reading than in other locations.
* Pre-tapped Port: Using a pre-tapped port avoids drilling and tapping, reducing the risk of damaging the intake manifold. This also provides a cleaner and more professional installation.
If your intake manifold doesn't have a pre-drilled port:
You'll have to find a suitable location, but it's crucial to find a place where the coolant flow is consistent and representative of the average engine temperature. Avoid locations near the thermostat, as these can give inaccurate readings.
Important Considerations:
* Sender Unit Thread Size: Match the thread size of your sender unit to the port or any new fitting you install.
* Sealing: Properly seal the sender unit to prevent leaks. Use Teflon tape or a suitable sealant on the threads.
* Gauge Compatibility: Ensure your sender unit is compatible with your water temperature gauge.
In short, always prioritize using a pre-drilled port in the intake manifold for the most accurate and reliable water temperature reading. If this isn't an option, carefully select an alternative location with the above considerations in mind.
