Cummins 6.7L Gasoline Engine in a Ram?
Haven't been on this forum in a while so I am not sure if this has been discussed in the past few months. Back In February, Cummins unveiled their new fuel-agnostic strategy meaning that various e...
Forum Discussion
rjstractor wrote:FishOnOne wrote:Bionic Man wrote:Maybe it doesn't have a turbo.
Wouldn’t the fuel economy of a 6.7 turbo gas engine make almost unaffordable?
I would think it would have to be turbocharged to achieve power levels comparable to current naturally aspirated gas engines used in pickups. Otherwise it will have to be able to run at 5500 rpm or more. Maybe a Cummins B can do that but I doubt it. JMO, but I think it will be direct-injected and have smallish twin turbos. It will rev higher and have less torque than the diesel version, but have the same HP at lower RPM (more torque) compared with current normally aspirated gas V8s. There's no reason it should burn more gas than today's gas engines unless they crank up the boost to try and get 600 hp out of it.
How would it not burn more fuel when it has twice the displacement?
To me, that’s the biggest problem of the gas turbo charged engines. At least the small displacement versions get respectable mpg solo, but put a trailer behind them and they drop like a rock. My ExMAX gets only slightly worse mpg towing my 7000 pound wake boat than my 3000 pound fishing boat.
Towing a 17’ Crestliner at 70 MPH with some wind yesterday I got less than 10 MPG. I can’t imagine what twice the displacement would return.
