Dodge Cummins Diesel Forum - View Single Post

kwkbrdr1 · 12-24-2007, 04:36 PM

i read how sct installed their kit into a powerstroke, and they tapped the hole for the propane inlet into the mass air sensor bracket. this means it goes through the WHOLE intake system to get into the cylinder. i figured if that works, then my home built system will be completely safe as long as i check for leaks. here is how i did it, i have 500 miles on the system so far, probably about 200 running the propane without problems. i used a 20lb cylinder used for a regular bbq pit. i found a regulator from a site called tejassmokers.com. i got the 0-20 regulator with 20 ft. of hose, and i needed almost all of it. i found a shut off valve from a site called propane-generators.com. i found than link through another post. i found a 4by8 sheet of 14 ga. steel at a warehouse a few miles from my house for 70 bucks, the valve was 25, and the regulator with hose was 75. i found the needed brass couplings from a few of the plumbing supply shops around town, and was able to put a 1/4 inch nipple fitting from the regulator to the valve, and then got a coupler to get the valve to the hose. the valve needs 12 volts to open, so i ran a wire from my battery to a 15amp fuse to a grounded switch, then back to the box, and i used another ground to my bed to ground the actual valve. then i ran the hose out of the box i built to hold the tank, through some blue flexible electrical conduit, out of the front of my bed, along the drivers side framerail, then up into the engine bay to the intake. i drilled the hole to tap into the intake with a 25/64 bit right into the center of the casting plug that is FARTHER away from the engine so the propane would have time to mix. i found a 1/4inch to 3/8 adapter that i screwed into the intake, and screwed the hose to the 3/8 side of the fitting. overall cost was around 175, but i still have half a sheet of 14 ga that im sure i'll get a lot more use out of, so i'd say around 140, not including the tank. i have mine set at 4 psi right now. the switch has a red light that is on whenever the propane is armed, and i never use it under 45-50, i basically just have it on there to help me on the highway, and so far it definetely has. i filled my truck up by my house, took a 120 mile trip all hwy, to the mile, back to the same pump at the gas station, and i only put in 3.2 gallons, which means i seriously got 37.5 mpg at 65 pretty much the whole way!!! these are just preliminary numbers, so don't go all crazy, i am going to kansas in a few weeks, so i'll really be able to see what its doin, but i was getting right at 30 before this, so im seeing at least a 5 mpg gain. i've got a 03 reg cab, 2wd long bed, with the 305 motor, with s and b intake, quad xzt, wastgate blocked off, and no muffler. i have put less than 600 into this truck, and haven't spent a single minute of my life in a mechanics, or college class, and i can accomplish this, why can't the well schooled engineers from the auto comanies do something like this. not too mention i'm only scratching the surface, i said on another post that i wanted 40 mpg, well i'm setting my sights at 50 when all is said and done on this truck.

12-24-2007, 04:36 PM	#20 (permalink)
kwkbrdr1 Newbie Join Date: Nov 2007 Posts: 6 kwkbrdr1's Truck Pics	i read how sct installed their kit into a powerstroke, and they tapped the hole for the propane inlet into the mass air sensor bracket. this means it goes through the WHOLE intake system to get into the cylinder. i figured if that works, then my home built system will be completely safe as long as i check for leaks. here is how i did it, i have 500 miles on the system so far, probably about 200 running the propane without problems. i used a 20lb cylinder used for a regular bbq pit. i found a regulator from a site called tejassmokers.com. i got the 0-20 regulator with 20 ft. of hose, and i needed almost all of it. i found a shut off valve from a site called propane-generators.com. i found than link through another post. i found a 4by8 sheet of 14 ga. steel at a warehouse a few miles from my house for 70 bucks, the valve was 25, and the regulator with hose was 75. i found the needed brass couplings from a few of the plumbing supply shops around town, and was able to put a 1/4 inch nipple fitting from the regulator to the valve, and then got a coupler to get the valve to the hose. the valve needs 12 volts to open, so i ran a wire from my battery to a 15amp fuse to a grounded switch, then back to the box, and i used another ground to my bed to ground the actual valve. then i ran the hose out of the box i built to hold the tank, through some blue flexible electrical conduit, out of the front of my bed, along the drivers side framerail, then up into the engine bay to the intake. i drilled the hole to tap into the intake with a 25/64 bit right into the center of the casting plug that is FARTHER away from the engine so the propane would have time to mix. i found a 1/4inch to 3/8 adapter that i screwed into the intake, and screwed the hose to the 3/8 side of the fitting. overall cost was around 175, but i still have half a sheet of 14 ga that im sure i'll get a lot more use out of, so i'd say around 140, not including the tank. i have mine set at 4 psi right now. the switch has a red light that is on whenever the propane is armed, and i never use it under 45-50, i basically just have it on there to help me on the highway, and so far it definetely has. i filled my truck up by my house, took a 120 mile trip all hwy, to the mile, back to the same pump at the gas station, and i only put in 3.2 gallons, which means i seriously got 37.5 mpg at 65 pretty much the whole way!!! these are just preliminary numbers, so don't go all crazy, i am going to kansas in a few weeks, so i'll really be able to see what its doin, but i was getting right at 30 before this, so im seeing at least a 5 mpg gain. i've got a 03 reg cab, 2wd long bed, with the 305 motor, with s and b intake, quad xzt, wastgate blocked off, and no muffler. i have put less than 600 into this truck, and haven't spent a single minute of my life in a mechanics, or college class, and i can accomplish this, why can't the well schooled engineers from the auto comanies do something like this. not too mention i'm only scratching the surface, i said on another post that i wanted 40 mpg, well i'm setting my sights at 50 when all is said and done on this truck.