Talking about running propane.....

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Rusty

Talking about running propane.....

Post by Rusty »

Split the topic to make it easier to find-HJ
Bad_Ass_S10 wrote:I dont know if this will help you out much but some others might find it helpful, I know i used it to verify what vehicles to look for

the web site http://patooyee.com/ from there click on technical and the scroll down to you see the dana symbol and click on that from there you will be able find any dana axle and the correct model of vehicle including yrs


I did find some good info there. Mostly the propane conversion which I had thought about. It won't work for me though since the closest place to wheel is almost 200 miles away. I don't think I could carry enough fuel for it. The propane sure would solve some issues with emissions and a V8 swap though.
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Post by BowtieZR5 »

talking about running propane... i couldn't find where he talks about his MPG? if it is a huge increase i may be up for it too. depending on how much propane is compared to gas.
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Post by Rusty »

BowtieZR5 wrote:talking about running propane... i couldn't find where he talks about his MPG? if it is a huge increase i may be up for it too. depending on how much propane is compared to gas.
I didn't see any mention of it either. I was going by my experience working around warehouses and LPG powered forklifts. They just didn't seem to go that far on a tank and a V8 in a truck is going to use a lot more. The guy with the Jeep obviously trailers his rig to the trails so getting there and back isn't part of the equation and he talks about running out with one tank so he keeps a spare and also with the forklift tanks, he can send someone out to refill them without trailering the whole thing. That tells me his mileage is rather limited. I have to drive almost 200 miles to get to a trail from where I live and it would seem to me I would have to fill the back of my Blazer with tanks just for one day of wheeling. Maybe I'm wrong but it just seems that way from what I've read about propane so far.
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Post by Justin »

what about a deisel engine? I bet you could find 4 cylinder or a small 8 for your rig...plenty of torque and some get 30mpg+ and deisel is roughly the same as home heating oil which only increases in the winter but it has stayed relatively the same price through the gas price hike...Would you be using your rig during the winter?
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Post by HenryJ »

Justin wrote:what about a deisel engine? I bet you could find 4 cylinder or a small 8 for your rig...plenty of torque and some get 30mpg+ and deisel is roughly the same as home heating oil which only increases in the winter but it has stayed relatively the same price through the gas price hike...Would you be using your rig during the winter?
Diesel was actually higher than 87 octane gasoline here for a time. They are still way too close to the same price :!:

Diesel would have some advantages, mileage and torque. A swap from a South American S-10 would be simple? They already get the Turbo'd Isuzu diesel engine. Sure seems like a domestic Isuzu diesel would be an easy swap.
One drawback for diesel engines is the parts cost nearly 10 times what the equivalent gas engine part costs. :shock: It takes a long time to recover that in added mileage, when fuel costs are the same.

Now back to the current topic...Propane.

There are some advantages to it also. Above and beyond the wheeling advantages. It is really clean, leading to longevity of the engine.
However storage is a problem. I am not positive , but I think that the mileage is just slightly less than that of burning gasoline. Power is better, but it uses more fuel.
To get the same range the stock fuel tank has you would need to pack a 20-25 gallon tank of propane. Might be better for a trailered trail rig.

Winter time starting can be a real pain too. It acts more like a diesel for starting in the winter. You'd really need to plug it in.

On a bright note, there may be tax incentives for using propane? In Oregon there are tax credits for running alternative fuel vehicles. And it is environmentally conscious, making a better world for generations to come (every little bit counts)

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Post by AZS10Crew »

Propane runs hotter than regular gas too doesn't it? I remember hearing something about long term engine damage caused by running propane back in AZ. There was a big alt fuel vehicle kick there about 4 years ago when the state was offering a 50% rebate when you buy an alt fuel vehicle. That was a serious state budget fiasco. Word was those vehicles with the conversion kits were next to impossible to get rid of too.

But for an occasionally used trail rig, it would probably be a good setup.
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Post by HenryJ »

AZS10Crew wrote:Propane runs hotter than regular gas too doesn't it? I remember hearing something about long term engine damage caused by running propane back in AZ. ...
It offers a cooler intake charge, since as a compressed gas expanding it tends to cool the mixture (can tend to ice up in the winter time). Propane does have a higher octane (if that is the correct term in this case) , or less tendency to knock.

I think the engine damage concerns are from it being very easy to lean out and burn up pistons, rings , valves , etc.

A carbed propane rig needs the liquid propane in the float bowl. If the tank is low and the liquid pickup line is improperly oriented you could get gas during cornering , or in a steep climb?

I'm no expert here and most of this is just stuff that I have heard second hand, I haven't messed with a propane converted rig for very long, or much, so feel free to correct me.
Last edited by HenryJ on Sat Jun 12, 2004 7:50 pm, edited 1 time in total.

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Post by AZS10Crew »

HenryJ wrote:I think the engine damage concerns are from it being very easy to lean out and burn up pistons, rings , valves , etc.
Yeah...that's what it was. I remembered burning pistons but thought that might have been because it ran hotter. But I'm far from an expert either. :?
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Post by Rusty »

My only experience with propane, other than the occasional forklift was working with a friend of mine years ago delivering Washington Post bundles to the paper boys. We drove around in a 30 series Chevy stepvan that had a dual fuel setup. It ran either gasoline or propane and you could switch between the two while driving. It was an interesting setup but having both gasoline tanks and propane tanks takes up a lot of space. It was tuned for running gasoline most of the time so it didn't run quite as well on propane.
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Post by Bad_Ass_S10 »

all I can say is that I have never heard of anyone running propane in a gas engine but alot of the guys down here run it on their deisel pickups cause from what they say its just like adding NOS to a gas engine, but these guys have alot of work done to their engines too, exhaust brakes, exhaust temps, computer chips, 6" straight exhaust pipes, and tehy only use the propane while playing in the mud, gives them a bit of boost
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Post by AZS10Crew »

Propane and CNG as alternative fuels were the big thing out in Phoenix a few years ago (mainly because of the tax break on the cost). But there's still a lot of them. A bunch of the city buses, school buses, cabs, etc. are either propane or CNG. Eventually all of them are supposed to be alt fuel.

And I've heard about using propane like nitrous in diesels too.
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