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| | | Re: Want kind of gas mileage do you get. | Joined: Feb 2009 Posts: 247 enthusiast | enthusiast Joined: Feb 2009 Posts: 247 | BTW my 99 Dakota 318 had a throttle body, but fuel was injected in the runners thats not a TBI. If your Dakota's 318 had a throttle body, it had TBI (Throttle Body Injection ). | | | Re: Want kind of gas mileage do you get. | Joined: Aug 2011 Posts: 162 member | member Joined: Aug 2011 Posts: 162 | CNG dual fuel kits are avail now. You can compress regular consumer piped in natural gas with a wall mounted unit in your garage or you can refill at stations. Commercial refill venues sell 1 GGE (gallon gas equiv) at half the price of gasoline - or less. The system uses a pressure reducing valve and supply fuel to your carb or EFI. a tank in the back holds say 12 GGE CNG. Burns clean too. Probably give up 5% HP, that's ok, I have more foot.
Natural gas is abundant and does not have to come from the middle east.
I am thinking miles per dollar, not miles per gallon. | | | Re: Want kind of gas mileage do you get. | Joined: Sep 2009 Posts: 868 Likes: 2 old hand | old hand Joined: Sep 2009 Posts: 868 Likes: 2 | BTW my 99 Dakota 318 had a throttle body, but fuel was injected in the runners thats not a TBI. If your Dakota's 318 had a throttle body, it had TBI (Throttle Body Injection ). Not true. If it was multi port injected, that means there is a throttle body to control air flow via the butterflies in the bottom of it (like on a modern hemi for example) and then fuel injectors at each runner individually, separate from the throttle body. Throttle body injected means the fuel injectors are mounted on the throttle body itself, basically a "smarter" carburetor that ran a wet manifold (fuel and air in manifold) and why MPI is preferred (individual injectors, but not necessarily individually fired injectors, aka batch fire, but a dry manifold mostly), and SMPI (sequential multi port injection) is even more desired as it truly runs a dry manifold and allows individual cylinder tuning per injector. Hope that clears that up for some and that I got it right, haha!
Last edited by Alikazam; November 06th 2011 11:49 pm.
1972 Dodge Van "Tigerlilly" - Blazing Copper/Sandstone Metallic - 3850 lbs empty 13.47 @ 97.53 mph N/A - 11.94 @ 113.33 mph N2O - old 360/727 + Nitrous (N2O)combo Viper V10 + 4L80E conversion in progress...
2009 Dodge Challenger SRT8 "Leelu" - TorRed - 6.1L Hemi/6 speed - Supercharged - SOLD
1990 Celica Alltrac "Emma" - 2.0L 4cyl Turbo AWD - 327awhp - 21-22mpg freeway, 17-ish mixed daily use - 13.2 @ 108 best so far.
2007 Chrysler 300C SRT8 "Ruby Rod" - 6.1L Hemi - pretty much bone stock driver - With 425hp
| | | Re: Want kind of gas mileage do you get. | Joined: Feb 2009 Posts: 247 enthusiast | enthusiast Joined: Feb 2009 Posts: 247 | Thanks for the education! Everytime I think I've covered them all, I find a new way to showcase my stupidity | | | Re: Want kind of gas mileage do you get. | Joined: Sep 2009 Posts: 868 Likes: 2 old hand | old hand Joined: Sep 2009 Posts: 868 Likes: 2 | lol happens to the best of us, not to sweat it! I just did it on another forum yesterday as well!! lol
1972 Dodge Van "Tigerlilly" - Blazing Copper/Sandstone Metallic - 3850 lbs empty 13.47 @ 97.53 mph N/A - 11.94 @ 113.33 mph N2O - old 360/727 + Nitrous (N2O)combo Viper V10 + 4L80E conversion in progress...
2009 Dodge Challenger SRT8 "Leelu" - TorRed - 6.1L Hemi/6 speed - Supercharged - SOLD
1990 Celica Alltrac "Emma" - 2.0L 4cyl Turbo AWD - 327awhp - 21-22mpg freeway, 17-ish mixed daily use - 13.2 @ 108 best so far.
2007 Chrysler 300C SRT8 "Ruby Rod" - 6.1L Hemi - pretty much bone stock driver - With 425hp
| | | Re: Want kind of gas mileage do you get. | Joined: Jul 2009 Posts: 3,001 pooh-bah | pooh-bah Joined: Jul 2009 Posts: 3,001 | I'm planning on an OD tranny for the Night Train, i figure 16-18, maybe even 20 mpg should be obtainable with a 3.21 final drive ratio.
I DID NOT Escape, I'm on a Weekend Pass Lifelong Disease, WhiteLine Fever 97 DODGE shorty, The ROCK & ROLL Train New 4 Seasons Criuser, 74 B100, The Night Train Member of the Toopa Sinner Tribe
| | | Re: Want kind of gas mileage do you get. | Joined: Dec 2001 Posts: 3,455 Likes: 23 pooh-bah | pooh-bah Joined: Dec 2001 Posts: 3,455 Likes: 23 | Can't say I don't worry about it but it is not my daily driver and I plan on spending money when I use it to go to an event etc. I drive a F-150 4x4 as a daily driver getting on average 11-15 so I normally do not notice the difference.
1973 Dodge Shorty B-100 1995 Chevy G20 Gladiator
Life should not be a journey to the grave with the intention of arriving safely in a well preserve body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and proclaiming
"Wow What a Ride"
Johnny O "O Vanners" of Connecticut! Since 1982
| | | Re: Want kind of gas mileage do you get. | Joined: Nov 2018 Posts: 8 stranger | stranger Joined: Nov 2018 Posts: 8 | My 86 B250 was getting 3.2 MPG when I bought it. It was running alright (not great) but the carb was leaking a bit which I figured out by looking down into the front two barrels on my quadrant and could see the drips splashing onto the plate. I let it sit in the carb bucket for a few days and rebuilt it. I'm sitting at about 13 right now. Not bad since I carry hundreds of pounds of music gear in it every day. I wondered if replacing my wheel bearings prematurely might help a bit more as well as replacing my rear end oil and fixing my front Universal, which is giving it a tiny shake right now. | | | Re: Want kind of gas mileage do you get. | Joined: Feb 2018 Posts: 116 Likes: 2 member | member Joined: Feb 2018 Posts: 116 Likes: 2 | This is an old thread to have bounced back. But for giggles I'll note that my 1991 B250 (Mid-height raised roof) with 318TBI, stock cam, but with lightly ported heads, stock exhaust manifolds and 2.25" single exhaust gets 13-17mpg. I've gotten 18 on one tank where we drove flat out on a state highway, 45-55 the whole time. It brings in 14-15 on the interstate going 70-80. With the head and valve work I've got way more power than it did before that work was done. Maybe as much as a stock Magnum, at any rate it has plenty of juice to get me and a full crew of people and gear going. It's also worth noting I've never been one to lay off the gas pedal for fuel economy. If I want to hold speed up a grade I stomp on it, that is to say I have a bit of a lead foot and give no second thoughts about it. :-)
- Rich
1991 Dodge B250 Zephyr Conversion. "Bi-frost" 89,000-ish original miles and counting. - 318TBI; has headwork and other bolt on upgrades. Runs strong and smooth! - Powertrax locker - 3" aluminum radiator. - Rear air springs, rebuilt suspension, steering stabilizer. | | |
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