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skyking · 02-21-2012, 08:05 PM

Racer,
Thanks for the black RS pic.
There is no comparison between a Turbo diesel and a gas engine regarding efficiency. The diesel is between 20% and 30% better thermally. Weight is really not the issue either. Aero is the big player in the game.
The isuzu weighs 175 pounds more than the V-8 i would replace. That is not a big leap, won't require any major suspension changes. I would hazard a guess of high 30's without any aero changes, maybe better.
Go the whole enchilada with front spoiler, belly pan, wheel covers, LRR tires and it should get into the 40's and low 50's.

edit: no, I don't have the car or truck/engine. I think I can get the truck with engine cheap though. they are a highly valued unit.

02-21-2012, 08:05 PM	#26 (permalink)
skyking Master EcoModder Join Date: Apr 2011 Location: Tacoma WA Posts: 1,399 Woody - '96 Dodge Ram 2500 SLT Team Cummins 90 day: 23.82 mpg (US) Avion and Woody - '96 Dodge/Avion Ram 2500/5th wheel combo 90 day: 15.1 mpg (US) TD eye eye eye - '03 Volkswagen Beetle GLS 90 day: 49.05 mpg (US) Mule - '07 Dodge Ram 3500 ST Thanks: 743 Thanked 528 Times in 344 Posts	Racer, Thanks for the black RS pic. There is no comparison between a Turbo diesel and a gas engine regarding efficiency. The diesel is between 20% and 30% better thermally. Weight is really not the issue either. Aero is the big player in the game. The isuzu weighs 175 pounds more than the V-8 i would replace. That is not a big leap, won't require any major suspension changes. I would hazard a guess of high 30's without any aero changes, maybe better. Go the whole enchilada with front spoiler, belly pan, wheel covers, LRR tires and it should get into the 40's and low 50's. edit: no, I don't have the car or truck/engine. I think I can get the truck with engine cheap though. they are a highly valued unit. __________________ 2007 Dodge Ram 3500 SRW 4x4 with 6MT 2003 TDI Beetle 2002 TDI Beetle currently parked - 1996 Dodge 2500 Cummins Turbodiesel Custom cab, auto, 3.55 gears Last edited by skyking; 02-21-2012 at 08:16 PM..