About

Brad the owner of Niagara dyno has always been a nerd for trying things and seeing the results. This combined with a knack for tuning carbs and getting the most out of engine made for a no brainer decision to start a dyno and tuning shop. Niagara Dyno started about two years ago and since then Brad has dyno’d and tuned anything that comes his way such as muscle cars, imports, quads, motorcycles, and even standalone ECU’s.

Tip

A common problem with customized cars (especially older classics) is overheating while in stop and go traffic, or while idling. One of the common causes of this is the fan shroud is no longer in place. The shroud does a lot more than just protect fingers, its main purpose is to force air to pass through the radiator instead of letting the hot engine bay air just circulate in a loop behind the radiator. The negative effects of not using a shroud might not show up while cruising (especially at faster speeds), as the air is being forced to pass through the radiator solely from the vehicle pushing through the air all on its own, but at slower speeds and idling, the engine is depending on the fan to suck cold air through the radiator, so it will drop the temperature of the engine coolant. Without a shroud in place, the air will take the path of least resistance, which is to just circulate in a loop in the engine bay behind the radiator, increasingly getting hotter in the process, and not transferring any heat from the coolant. The shroud prevents the air from looping, and actually turns the fan into a vacuum with the only way for air to get in being through the radiator. That not only helps drop the coolant temperature, it also forces air heated by the exhaust system out of the engine bay at the same time.

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Niagara Dyno - Engine Cooling Tech Tip