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Unread 04-16-2012, 07:27 PM   #1
ahar9
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Is propane conv. Worth it?

I'm interested In a propane conversion but I have a couple questions. From people who have done it, is it worth it? Also how many Mpg or hours do you get? Not sure which to call it with propane. Lastly do you ever have trouble finding a place to fill it up?

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Unread 04-16-2012, 08:00 PM   #2
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While I've never done a conversion, I've heard more than once you will loss power switching to propane from gas. Could be an old wife's tell.......
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Unread 04-16-2012, 08:11 PM   #3
Treton
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If you check out rock bouncers on youtube they are all running propane and they seem to be fountains of power but who knows what all they have in them.
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Unread 04-16-2012, 11:35 PM   #4
mvbrady
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Propane...I believe is only getting better as a legitimate alternative,
prices are rumored to possibly hit $1.00...that is alot less than $4.00 +,
they tend to get less gas mileage...offset that with less maintenance costs and lower price at
the pump.... fill stations are becoming more available ...if you can get it certified you
can probably claim it on your taxes, kits are avaialble for EFI engines that are supposed to work better
than what you can get off your warehouse forklift.
I have NOT converted anything to propane...just a little research and living in an Oil and Gas town helps.
I do have an an Impco 225 carb with a ford base plate and a Model E converter with a brand new kit ($80)
for fairly cheap if your interested... I had planned a conversion for the 88YJ w/258
I used to have but that went away once I sold it and now have my CJ.
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Unread 04-17-2012, 03:54 AM   #5
gmakra
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Propane has a very high octane rating however it has a lower BTU value than gas so you will lose mileage but its a good fuel and the few people I talked to that have done seem to be happy.
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Unread 04-17-2012, 04:09 AM   #6
ahar9
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Quote:
Originally Posted by gmakra
Propane has a very high octane rating however it has a lower BTU value than gas so you will lose mileage but its a good fuel and the few people I talked to that have done seem to be happy.
I read something where a guy said a 10 gallon tank of propane lasts him 16-18 continuous hours of driving? Was he just bull ****ting me or what?
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Unread 04-17-2012, 04:37 AM   #7
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Quote:
Originally Posted by ahar9 View Post
I read something where a guy said a 10 gallon tank of propane lasts him 16-18 continuous hours of driving? Was he just bull ****ting me or what?
yes.

i plan on switching when i get the funds
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Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
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Unread 04-17-2012, 05:43 AM   #8
gmakra
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Originally Posted by ahar9
I read something where a guy said a 10 gallon tank of propane lasts him 16-18 continuous hours of driving? Was he just bull ****ting me or what?

Thats so hard to say engine size, driving style all factor in.
Gasoline has 109,000-125,00 BTUs per gallon octane rating of 86-94
Propane has 84,000 BTUs per gallon and a octane rating of 120+

I would say a 15-20% reduction in MPG however it maybe worth it
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Unread 04-17-2012, 05:46 AM   #9
RobsCrawlin7
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it also runs MUCH cleaner. and you can have it delivered in bulk since it doesnt go bad.
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Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
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Unread 04-17-2012, 07:12 AM   #10
burgixxl
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.

talking about the situation here in Germany.
I have converted my Audi A6 to propane, it was worth it, did need to drive 35000 km to reach the break even in investment.
In the meantime, we have a lot of gas stations offer propane.
The costs are half of regular gas. The lower mileage is an average of about 15%.

Would do it again anytime.
But for my CJ7 it is not worth, because I drive it only about 3-5000 km a year. A return of investment (in my point of view) shall be reached within 2 calender years.

If the situation is same/similar in the US, go for it.
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Unread 04-17-2012, 07:19 AM   #11
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I had it on my 1963 CJ-5 with a v6. It did run well, idled on a wicked incline etc. I only drove it around my yard a few times before parting the rig out.

What I did not like was the tank inside. The PO actually ran two tanks INSIDE the cj. It had a full top on it. Not good and it smelled inside.

Would I have run it if I didn't have the tank issues? Yes.

What I noticed from the limited time I ran it:

Ran very good and even.
Clean oil
It ran good at angles
Cheap to fill


Just deal with the tank issue and it is a decent alternative.

ROB
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Unread 04-17-2012, 07:22 AM   #12
burgixxl
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Mounting

Mounting in the Jeep might be an issue. Usually you have to gor for a cylinder tank.

In the Audi, it was much more simple. There is a tank installed which replaced the space of the spare tire.No smelling. If it smells, than there is something wrong !!!!!
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Unread 04-17-2012, 08:12 AM   #13
RobsCrawlin7
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mounting it inside isnt a problem, just make sure there's no leaks. if you can smell it, theres a leak.
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Quote:
Originally Posted by my_304_cj7 View Post
I used Marvel once before I took my Jeep out on the trails. I didn't get stuck all weekend so I guess it works.
SSG David Mejias, SSG Eric Vick, SGT William Bowling, SGT Robert McDowell
1 April 2007
Rest In Peace Brothers
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Unread 04-17-2012, 08:28 AM   #14
ahar9
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Quote:
Originally Posted by TheRyans33

yes.

i plan on switching when i get the funds
Yea I really wana do this. Being in high school I don't have the money to pay for my 8mpg in gas.
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Unread 04-17-2012, 08:36 AM   #15
LT1CJ7
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Is it a cost effective alternative ??? NO
Commercial propane or HD5 grade is what is needed for automotive use.
Seeing LPG hit $1.00 isn't going to happen.
Check out the prices at your local filling stations and you will see them mostly in the $3.50-$4.00 a gal.
Of course, Price will vary with location and month of the year, And that's if you have a filling station near you.
My one & only local station was current 4 months ago at 3.99 ($ per Gallon) 2011-12-31
Check out your local place here:
http://www.altfuelprices.com/stations/LPG
A LGN system, if there is even a retrofit system available will cost around $2.00-$2.50 a gallon.
But I feel if anyone looking for a significant savings on an alternative fuel is better off going biodiesel with a 4bt, or coming up with a way to combust sea water
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