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Old 10-06-2009, 07:34 PM   #19 (permalink)
basslover911
Master EcoModder
 
Join Date: Sep 2008
Location: Fort Worth, Texas
Posts: 356

Silver Turtle - '02 Ford Focus Zx3
90 day: 38.83 mpg (US)
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Quote:
Originally Posted by Christ View Post
Keep in mind, you have the efficiency of the engine to worry about, as well. You can't think of one system at a time, you have to think of both systems working together. Decreased exhaust velocity means higher back pressure, which is not good for your engine (unless it's a 2 stroke, of course, and then only to a given extent.)



Ideally, you could get 100% of the heat from the exhaust system. This would choke out the host engine, though, defeating the intended design.

Realistically, you probably won't be able to recover more than about 25% of the exhaust's heat without causing severe performance degradation.

You will want to shield and insulate the exhaust from front to back, to minimize the heat loss that isn't providing energy for your setup, which will help a few % with efficiency, and still allow you to have enough heat in the exhaust to maintain positive flow with minimal pressure build.
Yes but remember your replacing a muffler for this, so the back pressure should be the same or less than how the car came from factory since your not adding anything to the system just replacing something

And what turbine? Well more like a water pump that turns an alternator.
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