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Old 01-20-2012, 02:09 PM   #10 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by Daox View Post
Its perfectly fine to do in a manual trans. I've done it a few times with my Paseo down larger hills to help charge the deep cycle battery I have (because I'm running an alternator delete). There is still very noticable drag due to the engine still pumping and compressing air. But, there is a noticable difference between WOT and no throttle. I don't do it often because IMO its really not worth it. Its also a pain to flick on the alternator switch, hold down the injector kill switch, hold down the gas pedal, select a gear to get rpms up a little... then at the bottom of the hill reverse it all to start the engine back up.
Forgive me for being this dense, Daox, but here is how I hear this: I can coast down a hill near work that is a mile and a half and very steep in 4th or 5th gear, injectors OFF, pedal to the metal, and key in the run position and thereby charge my battery via the alternator without risking damage to the engine? That's what you have done?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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