Liquid propane injection
#176462
12/27/08 06:04 PM
12/27/08 06:04 PM
|
Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
|
I caught the tail end of HotRod TV yesterday. They had a Chevelle with Liquid Propane Injection.
They said as it goes through a tube it expands big time at a really fast rate and practically creates 3-5 pounds of 'boost'??
I couldn't even afford the custom fabbed and 5 chambered propane tank in the car but I was just curious if anyone has ever tried this.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
|
|
|
Re: Liquid propane injection
[Re: ProSport]
#176463
12/27/08 06:08 PM
12/27/08 06:08 PM
|
Joined: Sep 2003
Posts: 1,113 Lost in Pooler, GA
Gumbydammit
super stock
|
super stock
Joined: Sep 2003
Posts: 1,113
Lost in Pooler, GA
|
If it's the one I'm thinking about, the Mothers Chevelle runs on Propane. It was built as an "alternative fuel" vehicle. It isn't using Propane as a power adder like one would with nitrous.
I'm Gumby dammit!
|
|
|
Re: Liquid propane injection
[Re: dthemi]
#176465
12/27/08 06:33 PM
12/27/08 06:33 PM
|
Joined: Aug 2003
Posts: 4,384 Madison Wi
NTOLERANCE
master
|
master
Joined: Aug 2003
Posts: 4,384
Madison Wi
|
Ive got a propane regulator that ran a BBF engine sitting in the garage.... I've got some parts to convert a /6 engine saved up. Forklifts used propane alot, pretty simple stuff to work with, and yes the regulator does drop the high tank pressure down to a useable level, and it varies dependingon the application, but it doesnt increase incoming air pressure, least not that I have ever seen.
I used to care but....... things have changed
|
|
|
Re: Liquid propane injection
[Re: ProSport]
#176466
12/27/08 06:40 PM
12/27/08 06:40 PM
|
Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
OP
I Live Here
|
OP
I Live Here
Joined: Jan 2003
Posts: 17,918
Akron, Ohio
|
Yes it's the Mothers propane chevelle but they converted it to liquid propane injection and it made more power the way they had it setup. I know it's not a power adder but the way they were talking it almost acted like boost.
DT, I'm not sure what episode it was, it was on sometime yesterday. I'll have to watch for it again. They said it was cheap to run, made more power, and was better for the environment.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
|
|
|
Re: Liquid propane injection
[Re: ProSport]
#176470
12/27/08 07:26 PM
12/27/08 07:26 PM
|
Joined: Jan 2003
Posts: 6,591 Canton, Ohio
Sport440
master
|
master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
|
I didnt see the show but for propane to act like boost it would have to be injected as a liquid under pressure. Which is what they obviously were using. Vs the other way propane is normally used in forklifts and such consumed as a Vapor Propane is in liquid form under pressure. Once relesed it expands x% Propane in Vapor form has never been a good high performance fuel. But Liquid propane injection, thats something to keep an eye on, mike
|
|
|
Re: Liquid propane injection
[Re: 451Mopar]
#176472
12/27/08 11:07 PM
12/27/08 11:07 PM
|
Joined: Jan 2003
Posts: 549 Bristol, Va
fasteddie
mopar
|
mopar
Joined: Jan 2003
Posts: 549
Bristol, Va
|
I saw that Hot Rod TV show yesterday. The guy from Mothers said the 3-5 lbs. of boost came from liquid propane that expands 400% after injection. He didn't say, but wouldn't it have to be injected directly into the combustion chamber?
2003 Bristol Dragway Sportsman Champion
2016 Bristol Dragway Power Hour Champion
|
|
|
Re: Liquid propane injection
[Re: Sport440]
#176474
12/28/08 02:44 PM
12/28/08 02:44 PM
|
Joined: Feb 2003
Posts: 752 North Dakota
Jesse_Lackman
super gas
|
super gas
Joined: Feb 2003
Posts: 752
North Dakota
|
Think about the mass of liquid propane injected in ratio to the air mass, I can't see any way that amount of liqid propane expanding will create a 3-5 psi boost effect, should do the math on it I suppose. The newer Schwan's food delivery trucks have multipoint sequential liquid propane injection, that technology is owned by a company that is owned by Schwan's. On the engine it looks very very similar to a factory gasoline EFI system. http://www.bi-phase.com/index.html
|
|
|
Re: Liquid propane injection
[Re: 340RICK]
#176478
12/29/08 11:24 AM
12/29/08 11:24 AM
|
Joined: Mar 2003
Posts: 337 the netherlands
383duster
super street
|
super street
Joined: Mar 2003
Posts: 337
the netherlands
|
Here in the Netherlands about 50%-70% of the American cars (oldtimers and new) use propane for feul, also lots of car with bigger gas engines use it. With using a regulater and a "mixer" on top of the carb is the easyest and cheapest but with LPI (liquid propane injection) you got as much or even more power then on normal gas. but a LPI system is computer controlled and therefore difficult and expensiver on old carburated engines. for example, higher octane pump-gas for our older engines is around $7.60 for a gallon and propane around $2.66 a gallon so you understand that it is populair here to convert to propane
|
|
|
|
|