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Re: Just some comments about engine heat (archive)

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Posted by Devon Davis on October 04, 1998 at 13:00:23:

In Reply to: Supercharging-Turbocharging Questions (Long) posted by Lester on October 04, 1998 at 12:41:47:

: I have been looking to add more power to the ///M Roadster that I have on order. Can someone help me with the following questions about turbocharging and supercharging?

: 1. The ///M Roadster has a large engine in a small space. This causes increased heat in the engine bay. That is why BMW redesigned the front end and took off the fog lights, to allow more airflow into the engine bay. It seems to me that more horsepower may mean more heat under the hood. Does anyone know if the motor runs hotter when connected to a turbocharger or supercharger? Is this a problem? If it runs hotter, what modifications should I make to the type of oil used in the motor?

The removal of fog lights was not for the engine but for the brakes. The fog light area is now ducts that go to the front brakes. The engine bay heat is not that bad, but the heat from the exhaust is impressive, and possibly dangerous if you put your leg against the tail pipe.

Most people opt for the super charger in the M3, smoother deliver of power and the loss of power at the low end is not important since keeping the tires from spinning is a problem with stock power.

Its interesting to see you talking about upgrading an M roadster since it will out perform a stock 300ZX turbo.

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