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Natural gas system in my 1,6 PT Cruiser

 
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  #1 (permalink)  
Old 07 Aug 2012, 02:56 pm
Teska's Avatar
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Default Natural gas system in my 1,6 PT Cruiser

By popular demand

I 'm going to start a topic about my natural gas system (LPG = Liquefied Petroleum Gas) because it seems some people are interested.

Prior to the buying of the car I knew it was going to be natural gas driven. I love the feel of petrol cars but hate the cost of it.

So shortly after I bought the car I contacted the guy who allready did the LPG system in my 2010 Honda Civic. I chose the cheapest system but did add a valve saver system as wel cause otherwise the valves may burn in.

But since I 'm a musician I want full usage of my trunk so the tank had to go underneath. There wasn 't much room there so the gasman and I were laying under the car trying to figure out wich tank. We decided to go for 656 mm x 220 mm, taking 40 liters.
But the tank wasn 't available anywhere so we went for a 580 mm x 220 mm.

In the second week of may the car went to the guy and he did the build-in.

Here are the pictures with some explanation:

Switch position:

Oranje light = petrol.

Green light = gas.

Position of the filler:



Parts added to the engine:

Valve saver system.


Maincomputer.


Vaporizer.


Injectors were put into the intake manifold.

Position of the first tank:


Here you can see the upcoming problem:

The tank was too big, therefore the axle hit it while driving, making a 'clonk' noise. I could 't deal with that so I looked for the smallest tank available. It is only 565 mm x 180 mm and will only take 27 liters. But that doesn 't bother me cause the car doesn 't do much mileage anyway.

New smaller tank:


In the last pic you can see the heatshield the guy made !

FAQ
Why a LPG system ?
In Belgium the price of petrol is about $8.00 a gallon. Gas is only $2.70. That difference means that the optional cost of the system payes itself back in about two years. After that you save money each time you fill up the gas tank.
How come this seems to be a Euro thing ?
In the US petrol goes at $4 a gallon, I found LPG available there and goes for $3.00 a gallon. So the financial advantage is minimal cause LPG does less MPG than petrol.
Isn 't LPG a greener system for environmental purpose ?
Yes, that 's true. You 've got less CO and the internals of the engine stays cleaner too.
Is LPG common used in Europe ?
Much more than in the US but strangely not as common as someone would expect. Only a few brands offer LPG from factory such as Volvo and Chevrolet Korea (former Deawoo). People often don 't want to invest the $2000.00 cost.

So, this is it. Any questions ? Shoot !
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PT Cruiser 05 base 1,6 liter Electric blue.
Natural gas system build in.
Lowered with FK coilovers.
Installed Mopar sub !
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Old 07 Aug 2012, 07:12 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

Very nice write up and pics
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Old 07 Aug 2012, 08:01 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

Quote:
Originally Posted by Teska View Post

FAQ
Why a LPG system ?
In Belgium the price of petrol is about $8.00 a gallon. Gas is only $2.70. That difference means that the optional cost of the system payes itself back in about two years. After that you save money each time you fill up the gas tank.
How come this seems to be a Euro thing ?
In the US petrol goes at $4 a gallon, I found LPG available there and goes for $3.00 a gallon. So the financial advantage is minimal cause LPG does less MPG than petrol.
Isn 't LPG a greener system for environmental purpose ?
Yes, that 's true. You 've got less CO and the internals of the engine stays cleaner too.
Is LPG common used in Europe ?
Much more than in the US but strangely not as common as someone would expect. Only a few brands offer LPG from factory such as Volvo and Chevrolet Korea (former Deawoo). People often don 't want to invest the $2000.00 cost.

So, this is it. Any questions ? Shoot !


Really Nice install.

If I may add a few things.

LPG octane is aprox. 112 that means more power output of the engine
LPG will lower your emissions significantly even in a worn out engine.
LPG will keep the engine cleaner....ie. combustion chambers, crankcase oil, exhaust interior system.
LPG engine operating temperatures are lower


LPG is good stuff I have been using it in many cars since the mid 80's. However I use an LPG augmentation system which is not a complete alternative fuel system as posted above.




So what have you found to be the down side when use use LPG only?

And don't say the smell!


I need to find the company that I use that makes custom LPG tanks in any shape and capacity for you. They are also in composite material so less then half the weight as a steel tank.
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Last edited by NitroPT; 07 Aug 2012 at 09:57 pm.
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Old 07 Aug 2012, 10:18 pm
Teska's Avatar
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Default Re: Natural gas system in my 1,6 PT Cruiser

Well, to be honest... what downside ?

Performance is the same.
MPG is slightly more, about 8%, but with the old systems it was 25% more.
You need some space to put the tank.
I never smell the gas, if you smell it there's a leak wich is not good.

Maybe this is the dowside: I have to pay 148,00 extra taxes on the car because it's on LPG.

But hey, our govnerment is poor so what the heck...
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Natural gas system build in.
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Installed Mopar sub !
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Old 07 Aug 2012, 10:54 pm
Teska's Avatar
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Default Re: Natural gas system in my 1,6 PT Cruiser

Hmmm, why is this moved to "projects" ? This belongs clearly in "Engine and performance".
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PT Cruiser 05 base 1,6 liter Electric blue.
Natural gas system build in.
Lowered with FK coilovers.
Installed Mopar sub !
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Old 07 Sep 2012, 03:22 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

Thank you Teska fot this thread. I posted asking about LPG before. Nice to see some pics and close ups.

I always wondered about the tank and if it eats into the boot space at all or did you just rid of the spare wheel?

Yes, prices are hugely different here too between LPG and petrol.

LPG is around 70p a litre

Petrol is nearing 1.40 a litre. I feel sick just typing that.

I am considering the switch now, but concerned about the size of the tank. That isn't very big really at all. Trying to work out how many miles I could do on a full tank of LPG with a tank the size of yours.
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Old 07 Sep 2012, 03:24 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

Quote:
Originally Posted by Teska View Post

Maybe this is the dowside: I have to pay 148,00 extra taxes on the car because it's on LPG.

But hey, our govnerment is poor so what the heck...

Now here, I wonder if I would get a reduction in road tax as it would spit out lower CO2. Although my car is on the old car tax system which is based purely on engine size and not CO2 emissions.


What about insurance too? Did your insurance costs rise due to the conversion?
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Old 07 Sep 2012, 03:54 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

Quote:
Originally Posted by whiteclaw View Post
I am considering the switch now, but concerned about the size of the tank. That isn't very big really at all. Trying to work out how many miles I could do on a full tank of LPG with a tank the size of yours.
Well, if you want your cargo-area to remain you have to go with a tank instead of the sparewheel, like I did, but that means it's a small tank. I've got a 27 (real) liter tank and I don 't think it can be much bigger.
If you are willing to sacrifice cargo-area you can go for a vertical tank in your trunk that takes 60 liter.



My insurance isn 't influenced by the mod. I only had to do a technical check-up to confirm everything is save enough to go on the road.
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PT Cruiser 05 base 1,6 liter Electric blue.
Natural gas system build in.
Lowered with FK coilovers.
Installed Mopar sub !

Last edited by Teska; 07 Sep 2012 at 03:56 pm.
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Old 07 Sep 2012, 04:04 pm
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Default Re: Natural gas system in my 1,6 PT Cruiser

so how hard is it to fit a 2.4 PT in the us with thsi set up????
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Old 07 Sep 2012, 04:12 pm
Teska's Avatar
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Default Re: Natural gas system in my 1,6 PT Cruiser

I 've got no idea whatsoever... I couldn 't even say if anyone ever did it in the USA...
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Natural gas system build in.
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Installed Mopar sub !
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