• Phenolic spacer - Q&A

Thermal Spacers - Q&A

1. What are thermal spacers?
Thermal spacers, also known as phenolic spacers, are used to reduce the intake temperature in engines.

2. How do thermal spacers work?
Thermal spacers block conductive heat transfer to the intake manifold, helping to keep it cooler.

3. Why should I use thermal spacers?
Using thermal spacers can help prevent the gas from boiling and evaporating in the carburettor, reduce intake air temperature, and maintain torque output.

4. How can I measure the intake air temperature (IAT)?
You can observe the IAT on your Stand Alone Engine controller or through a diagnostic interface to your OEM ECU.

5. Where should the IAT sensor be located?
Before logging the IAT, make sure to check where the IAT sensor is located. If it's located before the intake manifold, using the readouts may be pointless.

6. When will I notice the effects of thermal spacers?
You may notice higher IAT when idling or driving on light loads. However, when the engine is on higher load, the IAT slowly lowers due to the cooling effect of the air flowing to the combustion chambers.

7. Do different cars have different benefits from thermal spacers?
Yes, every car with different engines has its own perks when using thermal spacers. It is recommended to consider the specific needs of your car.

8. Should I use additional thermal protection?
It is recommended to use other thermal protection methods, such as wrapping or shielding the intake manifold in a heat reflective material like an aluminium reflective heat shield, to further reduce thermal radiation and convection.