On EBAY:

http://www.ebay.com/itm/DIESEL...73498&_qi=RTM1066541

....at $0.88 a gallon---should one consider this???

I understand about 2 mpg and in city buses about a 50K engine life.

In my opinion a very bad idea.

I did not see the cost of the CNG tank. These are 3000-3500 psi and not cheap. I think you would have to do a lot of driving (i.e. fleet) to recover the cost of modification.

quote:

I did not see the cost of the CNG tank. These are 3000-3500 psi and not cheap

quote:

I did not see the cost of the CNG tank. These are 3000-3500 psi and not cheap

Diameter (In) Volume (liters) Length (In) GGE's* Weight (lbs) Price**

9.6" 30 31.9 2.7 80 $320

9.6" 60 60.2" 5.4 140 $600

11" 40 35.5"3.6 108 $360

11" 50 40.5" 4.7 126 $432

11" 60 48.5" 5.4 150 $530

12.7" 64 40" 5.8 164 $570

12.7" 100 61" 9.1 233 $880

14" 64 33.5" 5.8 174 $570

14" 70 36" 6.3 185 $620

14" 80 40.5" 7.3 205 $705

14" 115

quote:

14" 80 40.5" 7.3 205 $705

Note: This is for a "7.3 gallon" tank.....GGE means "Gallon-Gas-Equivalent" that might translate to about a 70 mile range on a Barth...


I've researched the CNG conversions and the tank size and range is a problem....the only thing that would really work is a dual-fuel i.e. capable of running on a second fuel when your CNG runs out...I've looked at this several times over the last 15 years because we have had a refill station here in town for that long....the expense of conversion and the lack of dual-fuel conversions were what kept me from doing it...

Gary, you told me about someone that had good luck but probably had diesel pistons in his converted engine. Could you elaborate?

The "pay back" for converting to lng is 18-24 months for an over the road rig. This is based on 100,000 mi/yr. I don't thin I'll be converting any time soon.
Wayne