720driver97 Posted October 27, 2015 Report Share Posted October 27, 2015 So I've been in the process of rebuilding my z24 and my friend gave me a idea, I was planning to use the R1 Yamaha carbs but now I have a new idea I'm thinking of running the truck on propane any one have any thoughts/opinions or experience with this? 1 Quote Link to comment
Draker Posted October 27, 2015 Report Share Posted October 27, 2015 I can say I've seen it done before.. but I don't have any relevant knowledge on doing so. Why propane? 1 Quote Link to comment
720driver97 Posted October 27, 2015 Author Report Share Posted October 27, 2015 Burns cleaner and its cheaper to run 1 Quote Link to comment
KoHeartsGPA Posted October 27, 2015 Report Share Posted October 27, 2015 Hard on valves & rings, engine life is shortened drastically. 1 Quote Link to comment
datzenmike Posted October 28, 2015 Report Share Posted October 28, 2015 Never heard this. Lots of taxis and fleet owners convert for the savings. Propane is cheaper but has less energy, but it can be more efficiently burned. (less waste) Propane has a much higher octane rating so to increase the efficiency the compression should be raised. 10-11 to one wouldn't hurt, and will bring back the performance of gas using a cheaper fuel. 1 Quote Link to comment
Busta Nut Posted October 28, 2015 Report Share Posted October 28, 2015 We had some government town cars come in that were propane powered...... ............waaaaaay less power than the gasoline counterpart...... I'm not sure why though......... 1 Quote Link to comment
TENDRIL Posted October 28, 2015 Report Share Posted October 28, 2015 cause id rather go 600 miles at 65 than 200 at 75 1 Quote Link to comment
Charlie69 Posted October 28, 2015 Report Share Posted October 28, 2015 I have had propane powered vehicles in the past. Less power and I did not like the hazards of driving a vehicle around the streets of Phoenix that was powered buy propane. Propane is heavier than air so when you have a leak it pools under the vehicle or on the floor of the vehicle depending on where the leak is. Quote Link to comment
DanielC Posted October 28, 2015 Report Share Posted October 28, 2015 The amount of power a piston engine can make is limited by the amount of air you can get into the cylinder. You have to maintain a burnable fuel to air ratio. With gasoline, some of the fuel is still a liquid entering the cylinder. The liquid takes less room than the gasoline vapor. More air can get in to the cylinder, so more fuel can be burnt. With propane all the fuel is a vapor, entering the cylinder. That displaces some air that could enter the cylinder. The heavier the refined fuel made from crude oil, the more potential chemical energy in a given volume of fuel. Diesel weighs more per gallon, and that is part of the reason a diesel engine can make more power than a gasoline engine, the other being higher compression. Propane is lighter than gasoline. Less potential energy per gallon of propane. 1 Quote Link to comment
maltese Posted October 28, 2015 Report Share Posted October 28, 2015 Filling the tank is a bitch. Been there, done that. And, it stinks. Chicks won't dig it. Was much happier when I switched back to gasoline. Mo' powah! 1 Quote Link to comment
fritzdixxon Posted October 28, 2015 Report Share Posted October 28, 2015 Also, you cannot park them in parkades and even garages are not recommended. 1 Quote Link to comment
720driver97 Posted October 28, 2015 Author Report Share Posted October 28, 2015 This morning I called up a guy that's running it on a Toyota with a stock 22re and he said once you tune it right he had more power? He also said filling is a pain but not horable 1 Quote Link to comment
720driver97 Posted October 28, 2015 Author Report Share Posted October 28, 2015 Never heard this. Lots of taxis and fleet owners convert for the savings. Propane is cheaper but has less energy, but it can be more efficiently burned. (less waste) Propane has a much higher octane rating so to increase the efficiency the compression should be raised. 10-11 to one wouldn't hurt, and will bring back the performance of gas using a cheaper fuel. how much would I shave off the head ? 1 Quote Link to comment
KoHeartsGPA Posted October 28, 2015 Report Share Posted October 28, 2015 This morning I called up a guy that's running it on a Toyota with a stock 22re and he said once you tune it right he had more power? He also said filling is a pain but not horable Ya I understand, forklifts aren't sexy. 2 Quote Link to comment
720driver97 Posted October 28, 2015 Author Report Share Posted October 28, 2015 Toyota sr5 1 Quote Link to comment
KoHeartsGPA Posted October 28, 2015 Report Share Posted October 28, 2015 Still a Toyota :poke: Here's a good article on this subject of conversion, doesn't mention rings but you need to make sure your valves and seats are up to spec for this. http://www.transtechenergy.com/LPG-NGL-Storage-News/bid/41183/Liquid-Propane-Autogas-Injection-FAQS-Valve-Recession 1 Quote Link to comment
720driver97 Posted October 28, 2015 Author Report Share Posted October 28, 2015 So dose it burn hotter then gas? 1 Quote Link to comment
KoHeartsGPA Posted October 28, 2015 Report Share Posted October 28, 2015 Read the article... 1 Quote Link to comment
720driver97 Posted October 28, 2015 Author Report Share Posted October 28, 2015 Ok so if I reseat the valves I should be good for awhile anyways right? Will this warp the head faster? 1 Quote Link to comment
datzenmike Posted October 29, 2015 Report Share Posted October 29, 2015 I don't know about down there but up here a propane conversion needs to be inspected regularly. Just like a Bar-B-Q tank they expire and have to be certified or replaced. Gas you don't have to worry about. 2 Quote Link to comment
Laecaon Posted October 29, 2015 Report Share Posted October 29, 2015 CNG, Compressed Natural Gas. Its better than propane, and you can buy filling stations for your home (for some money...) 1 Quote Link to comment
KoHeartsGPA Posted October 29, 2015 Report Share Posted October 29, 2015 Ok so if I reseat the valves I should be good for awhile anyways right? Will this warp the head faster? Valves and seats rated for natural gas should be enough, the intense heat happens in the combustion chamber, the head will be cooled by water/coolant. Quote Link to comment
datzenmike Posted October 29, 2015 Report Share Posted October 29, 2015 It contains less energy than gas too. Quote Link to comment
Boxcar Posted October 29, 2015 Report Share Posted October 29, 2015 It is also prone to freezing up in cold weather. Hard starts when cold . All bad in Minnesota. Has issues at altitude. Not the easiest thing to find in some rural communities. If you run out of gas , your screwed . Etc. I have run it off road on more than one rig. I found that all of the above issues made it not pencil out and have converted back to gasoline. Quote Link to comment
datzenmike Posted October 29, 2015 Report Share Posted October 29, 2015 Hands down... gas is the most concentrated energy source there is. Simple, easy to use, easy to store/transport, well used, and an infrastructure set up to supply it anywhere. Agree hard to vaporize when cold but great for taxi and large fleet vehicles that only get shut off to service them. DD? depends on longitude and altitude. Quote Link to comment
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