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Old 08-13-2004, 07:26   #1 (permalink)
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Can rotaries be run on LPG?

If possible, how do you do it? I dont know anything about rotaries either, so be simple in your explanations please.

Like can you just run a gas research carb?

thanks
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Old 08-13-2004, 14:07   #2 (permalink)
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Re: Can rotaries be run on LPG?

It is possible, as there is one running here in the ACT - RX3 blue sedan.

You can get manifold adaptors to run a variety of carbys on a rotory. I've seen 4 barrel holley, side and down draft webbers all on different rotorys.

As they are a petrol engine, it would (in theory) be simple to do. Not sure on the power side of it though.
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Old 08-13-2004, 21:44   #3 (permalink)
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Re: Can rotaries be run on LPG?

Cool. So it can be done. Yeah, I wonder whether rotaries, especially turbo, are suited to LPG or not.

LPG and turbo go well together in a convertional engine, I wonder if the same applies to a turbo rotary.

Anyone have any ideas?

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Old 08-13-2004, 23:45   #4 (permalink)
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Re: Can rotaries be run on LPG?

Hope this helps thek...

http://www.selectmaz.com.au
Then go to the Services Page
Then Select LPG conversions for the following:

"Over the years we have worked quite a bit with LPG on our and customer cars (Piston and rotary engines) but in the last year or so we have really started to get into it. The first thing that struck us was how much rubbish is talked about LPG (a bit like rotaries really), it seems that once someone has filled up a gas tank they are Eddie the Expert. The choice of the correct unit and the best brand for any application does not happen by accident. When the conversion is done the fact that the engine runs does not mean that it is tuned properly. Bad tuning causes the commonly known problem with piston engines of burnt out valves and rotaries are not immune to this sort of thing just because they donít have valves.

When pressed by a customer as to whether such and such a unit is suitable you are likely to be told that it is big enough to feed a 454 big block as if this was all you needed to know. This is what we were told when we had LPG fitted to our race transporter. Unlike some things bigger isnít always better.

LPG is a good fuel and a great idea that has been around for a long time with millions of happy customers saving money along the way. The initial costs of fitting a system can be somewhat off- putting but these costs are offset by the savings to be had at the pump (filling up at 20 cents per litre rather than 75 cents per litre is very pleasant). The cost of the system also adds somewhat to the resale value of the car.

There are some of the attractions of LPG but of more importance to some of our customers is that of legality, if done properly the EPA accepts that such a vehicle complies to the exhaust emission regulations. This is not important when fitted to the original type of engine but when an engine swap or turbo is involved it is sometimes the only way to get a car legally onto the road. The alternative of consulting engineers, masses of documentation, submissions, testing, bureaucracy, etc. just donít bare thinking about.

LPG does produce slightly less power and slightly less fuel economy than petrol but the differences are marginal and even less so when done on a turbo.

So you can have your cake and eat it too. Our RX5 development car fitted with a 12A turbo is running on LPG. The engine is a stock 12A turbo import engine running standard boost, no intercooler and a 2 inch street legal exhaust system. Call in for a look at our dyno sheets on this car."
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Old 08-13-2004, 23:48   #5 (permalink)
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Re: Can rotaries be run on LPG?

The following link is for an RX2 LPG Turbo car:

http://www.fastfoursvip.com/articles....aspx?view=100
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Old 08-14-2004, 01:11   #6 (permalink)
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Re: Can rotaries be run on LPG?

Thanks for those links and info ebxr. It sounds like they go good together. If anyone else has any more rotary lpg info it would be much appreciated.

thanks
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Old 08-15-2004, 17:16   #7 (permalink)
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Re: Can rotaries be run on LPG?

www.planetspeedy.com

there will be links on this site to a car that was owned by my mate RX044 that ran 11.9 @ 121 mph with a straight gas 13b turbo

Otherwise look at www.rotorworx.com.au they are the best in the business
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Old 08-15-2004, 21:07   #8 (permalink)
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Re: Can rotaries be run on LPG?

Quote:
Originally Posted by RUNRVS
www.planetspeedy.com

there will be links on this site to a car that was owned by my mate RX044 that ran 11.9 @ 121 mph with a straight gas 13b turbo

Otherwise look at www.rotorworx.com.au they are the best in the business
Broomy's old car defied all odds. Although gearbox's/diffs and clutches never lasted long in it.

Brenden
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Old 08-16-2004, 17:50   #9 (permalink)
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Re: Can rotaries be run on LPG?

might have had a bit to do with driver ability LOL

I asked for a drive and was flatly refused


;-)
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Old 08-17-2004, 04:31   #10 (permalink)
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Re: Can rotaries be run on LPG?

Yeah I checked out that rotorworx site. Some of those engine packages seem like pretty good value. But Im sure you could build something similar for less.

Is it true what you hear about rotaries being unreliable. Like if I wanted to drive around Australia in one tomorrow, would it make it. Assuming its a rebuilt motor, in good condition.

And do rotary turbos really chew through the fuel? This is something else I have heard. How are they on fuel, off boost?

thanks
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