Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Phenolic intake & Throttle body spacers

Originally posted by dpa43:

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Here is what I found on the site.
The following dyno plot was taken from a 1994 Ford Probe GT with a 2.5L V-6 engine. The only modification done to the car between runs was the installation of ThermoBlok spacers.

This plot shows an average gain of 5-7 horsepower and 9-11 ft-lbs of torque across the powerband. Each engine and combination of mods reacts slightly differently, but on average, Outlaw Engineering ThermoBlok spacers result in a 3-5% gain across the entire powerband with peaks as high as 10 horsepower and 12 ft-lbs of torque.




Temperature data was taken using a CPS T200 temperature sensor with a time constant on the order of 5 seconds. An A/D convertor was used for real time data-logging of the readings into a laptop. The vehicle was driven with a speed of 60 mph. Following the driving test, the engine was allowed to idle for a sufficient time to reach the steady state maximum temperature.

Notice that the temperature difference between the intake manifold and the outside air is the same regardless of the ambient conditions. As you can see, the temperature of the intake manifold reached a steady state of approximately 35° F lower with the ThermoBlok insulators than without during 60 mph cruising. During the idle test, the non-insulated engine was nearly 60 °F hotter.

This means that after idling in the staging lines waiting for a quarter mile run, your insulated engine would have an immediate advantage.

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