Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Alternator vs no alternator vs tiny alternator

Crazyrabbit · 02-07-2011, 11:46 PM

I calculated the other day that it might have cost me 1.6 mpg to run (2) 65 Watt H6054 halogen headlamps. I assumed 53 mph, Bsfc 0.40 #/hp-hr, and 50% alternator efficiency. Since then I have been thinking about yanking the Bosch OEM alternator out of my '81 Diesel Rabbit, and replacing it with a tiny little Nippondenso unit I got out of a crashed Geo Metro 3 cyl years ago. I could probably put a big pulley on the Nippondenso as well. I have converted most of the commonly used lights to LED, so I am sure the OEM unit is overkill.

By the way, has anyone heard of a manual fuel cutoff retrofit for Bosch Diesel injection pumps?

02-07-2011, 11:46 PM	#1 (permalink)
Crazyrabbit EcoModding Lurker Join Date: Dec 2009 Location: Sunny Arizona Posts: 54 Thanks: 0 Thanked 8 Times in 6 Posts	Alternator vs no alternator vs tiny alternator I calculated the other day that it might have cost me 1.6 mpg to run (2) 65 Watt H6054 halogen headlamps. I assumed 53 mph, Bsfc 0.40 #/hp-hr, and 50% alternator efficiency. Since then I have been thinking about yanking the Bosch OEM alternator out of my '81 Diesel Rabbit, and replacing it with a tiny little Nippondenso unit I got out of a crashed Geo Metro 3 cyl years ago. I could probably put a big pulley on the Nippondenso as well. I have converted most of the commonly used lights to LED, so I am sure the OEM unit is overkill. By the way, has anyone heard of a manual fuel cutoff retrofit for Bosch Diesel injection pumps?