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Old 08-05-2022, 09:32 AM   #11
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I may have to find a "normal" van to look at, if there's no diagram to be had. It's going to hurt to convert from CNG back to gasoline. I filled up at $1.54 a gallon from SoCal Gas near Hemet, CA yesterday, which is four dollars a gallon cheaper than the factory option.

Can you convert to a dual-fuel system? My friend has a 2012 E350 that CNG and regular gas, with a switch to go back and forth between the two systems.
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Old 08-05-2022, 10:12 AM   #12
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Can you convert to a dual-fuel system? My friend has a 2012 E350 that CNG and regular gas, with a switch to go back and forth between the two systems.
A dual-fuel system has two sets of injectors and associated wiring. I've looked at them and a conversion from my CNG-only setup would require ripping out what I've got to replace with new. I'd be required to change out my tanks, because installers won't warranty used tanks. I've been unable to find a junkyard that'd let me salvage a hybrid system to put in with my existing tanks. So, we're talking about a whole new system, which isn't worth the money.

I'll just use a dual-van system; using the gasoline van when that's appropriate and the extended range CNG van when I can instead. The CNG tanks have a life limit, at which time they must be replaced (nobody wants a 3600 psi CNG explosion). So, the second CNG van will also eventually be converted back to gasoline as well.

.... or, I've got a couple of 86 kW (110 HP each, for a total of 220 HP in a 4WD system) Bosch motors, controllers, and DC/DC converters that could also go in, although I'd need a trailer to carry all the batteries it'd require.
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Old 08-05-2022, 11:30 AM   #13
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Or long extension cord
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Old 08-05-2022, 05:34 PM   #14
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Or long extension cord
Was talking with Alan a couple of days ago and he was thinking diesel generator. You know, like a diesel-electric train engine. Lots of low end grunt but with efficient fuel usage.
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