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Oil Field Engines & Related Equipment

25 hp Superior Gas Engine


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  #1  
Old 08-06-2015, 06:58:05 PM
2030rumely 2030rumely is offline
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Default 25 hp Superior Gas Engine

Does anyone use a vaporizer in line with an acetylene regulator on their engines?

Seems a vaporizer might be more safe?
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  #2  
Old 08-06-2015, 08:45:39 PM
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Default Re: 25 hp Superior Gas Engine

Acetylene? People run engines on acetylene? Never heard of that before. I'll be following this.
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Old 08-06-2015, 10:17:59 PM
2030rumely 2030rumely is offline
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Default Re: 25 hp Superior Gas Engine

I should have made it more clear. I use an acetylene regulator on my propane tank for more precise control of pressure.
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Old 08-06-2015, 11:00:13 PM
con-rad con-rad is offline
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Default Re: 25 hp Superior Gas Engine

isn't a vaporizer used to turn gasoline into a vapor before being burned in an engine? seems like it would be redundant if it was used with propane. what would it's purpose be?

conrad
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Old 08-07-2015, 06:46:04 AM
2030rumely 2030rumely is offline
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Default Re: 25 hp Superior Gas Engine

I am new to this propane fuel and these engines and want to have a safe operation. I understand a vaporizer only allows fuel when the engine calls for it. When using a needle valve, if the engine dies or is shut down, gas will continue to flow if not manually turned off. I believe I saw one on an engine at the Pawnee, Oklahoma tractor show.
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Old 08-07-2015, 07:48:49 AM
con-rad con-rad is offline
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Default Re: 25 hp Superior Gas Engine

I believe certain kinds of BBQ propane regulators function in that way.

I don't understand the need, myself. 99% of the time you'll be running your engine, you'll be right there and be able to shut off gas manually if the engine dies. maybe someone else can correct me on this.

conrad
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Old 08-07-2015, 08:08:31 AM
Bill Hazzard Bill Hazzard is offline
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Default Re: 25 hp Superior Gas Engine

You are talking about a demand or a zero pressure regulator, not a vaporizer.
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Old 08-07-2015, 10:08:27 AM
2030rumely 2030rumely is offline
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Default Re: 25 hp Superior Gas Engine

Thanks Bill, That is what I need.

---------- Post added at 09:08 AM ---------- Previous post was at 09:01 AM ----------

Bill, Is this what you are talking about? Ebay item # 151414411460
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Old 08-07-2015, 11:22:28 AM
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Doug Waggonner Doug Waggonner is offline
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Default Re: 25 hp Superior Gas Engine

2030 Rumely, you probably already know this, but that regulator on the Ebay Link there is a demand reg. It doesn't do anything for pressure.
It only lets fuel through if the engine is sucking on it.
Where I see those used is on Fairbanks ZC's or Old Ajax's when they are using the original carb instead of an Impco carb. That way if the engine dies, it stops the fuel flow. I'm not sure if that's what your wanting but they are handy & cheap.
On my 35hp Superior I used a S-102-4 Fisher ounce regulator on a propane tank. And took the spring out of it to decrease the outlet pressure. As it don't take much to run a big engine is all you want to do it make it spin. Also installed a big ball valve on the air intake on the bottom of the mixer to pinch off the air coming in. That way it would run all weekend on a single 30lb propane bottle at 50RPM +/-
How I started & ran mine was open the ball valve on the bottom on the mixer, give it a snort of gasoline during the intake stoke, If you've done this you know why I say a "snort" of gasoline after it hit twice I turned the ball valve almost completely shut & turned on the propane. Once its running, with the regulator I used, the fuel system is running on a constant vacuum. Which is hard on any regulator so I'd replace it every year or so.
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Old 08-07-2015, 11:27:49 AM
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Default Re: 25 hp Superior Gas Engine

You had me with the acetylene. I have a friend who has an old acetylene generator (they never use but still owns) where they used to make the acetylene used in the welding shop. I thought maybe you were doing the same and using it to run the engine. I was thinking this has got to be DANGEROUS but you never know. Thought I was going to learn something.

Most gas engines to my knowledge need 6 oz of incoming fuel pressure. There are many ways to achieve that but generally a lbs. to oz. regulator is all that's used. I'm sure an acetylene regulator could work. BBQ grill, Fisher S-102, etc.

I have a couple of the secondary regulators that have to have vacuum before they let fuel pass, made by Beam Garretson T202 ANL. A customer ordered them a long time ago and never picked them up, I'd let one go at a bargain if you were interested.

Last edited by Reed Engine; 08-07-2015 at 11:46:12 AM.
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Old 08-07-2015, 12:01:11 PM
JSWithers JSWithers is offline
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Default Re: 25 hp Superior Gas Engine

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Originally Posted by Reed Engine View Post
You had me with the acetylene. I have a friend who has an old acetylene generator (they never use but still owns) where they used to make the acetylene used in the welding shop. I thought maybe you were doing the same and using it to run the engine. I was thinking this has got to be DANGEROUS but you never know. Thought I was going to learn something.
I could be wrong about this but I know they run some model engines on Mapp gas. I understood this was a type of acetylene.
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Old 08-07-2015, 01:27:15 PM
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Default Re: 25 hp Superior Gas Engine

Trying not to hijack but referring to acetylene, my friend told me how unstable it is. Why they call it dissolved acetylene is the canister its stored in is filled with some porous medium inside, not just an empty cylinder. He told me if you put it in a empty cylinder it would explode. This is the guy with the generator still in his shop. It makes me goosey knowing its there. I understand it still has carbide in it too.
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Old 08-07-2015, 03:13:07 PM
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Default Re: 25 hp Superior Gas Engine

Back in school we were taught that acetylene has to stay below 15psi or it will explode. Check out this link, http://www.msha.gov/alerts/hazardsofacetylene.htm The tanks are filled with acetone as a stabilizing fluid for the gas, for more on tanks check out this link, http://www.ehss.vt.edu/programs/CGC_cylinders.php
I think injecting acetylene into a cylinder and then compressing it would probably be a very bad and uncontrollable thing.
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Old 08-08-2015, 02:06:44 PM
2030rumely 2030rumely is offline
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Default Re: 25 hp Superior Gas Engine

So what you are saying is we don't need the needle valve? Just an adjustable regulator straight into the intake?
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Old 08-08-2015, 06:06:55 PM
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Default Re: 25 hp Superior Gas Engine

Shown here is a 0 pressure demand regulator from a propane powered Checker Cab. (Disregard the smaller safety device.) There is a water jacket built in & the heater hose attaches to it in series. Without the heated water the regulator will freeze up so in effect it is a vaporizer. I am using one of these on a 40 hp engine & the regulator does not freeze --- but the tank does sometimes.
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Old 08-08-2015, 10:05:52 PM
Dwight Vivas Dwight Vivas is offline
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Default Re: 25 hp Superior Gas Engine

The regulator would only control the gas pressure, I think you would also need a valve to control the volume of gas going to the engine.
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Old 08-09-2015, 02:43:02 PM
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Default Re: 25 hp Superior Gas Engine

Here is the setup that seems to work on my 40 hp Clark engine. The green hose carries hot water, the open brass fitting on the top of the regulator goes to the propane tank. The vaporized gas goes through the ball valve then to the governor valve & on to the charge cylinder ( the engine is 2 stroke). This is intended to work on liquid propane & the heated regulator vaporizes it. The 6" air intake on top feeds a large reed valve with a device just like the damper on a wood stove above the reeds. This will control the air intake but I still am trying to fine tune that aspect - suggestions welcome. (The small lines & valves are the controls for the air start system.)
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Old 08-09-2015, 09:37:37 PM
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Default Re: 25 hp Superior Gas Engine

Impco model E? Or EV?
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Old 08-10-2015, 12:14:02 PM
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Default Re: 25 hp Superior Gas Engine

The regulator is a model E. It was on a Chevrolet 350 cid engine originally.
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Impco model E? Or EV?
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Old 08-10-2015, 07:24:58 PM
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Default Re: 25 hp Superior Gas Engine

FYI, the model E regulator can be used for propane enrichment. We do it all the time. When the gas supply is under 6 oz. by placing the E near the carburetor it will sense the negative pressure and blend the correct amount of propane in with the other gas source from 0% to 100% and all in between. This is great when you have a well that has little gas upon start up and will transition from propane gradually to well head gas while you aren't there to make the switch. If anyone is interested in understanding this more PM me and I'll attempt to explain it better. Saves hundreds of dollars of propane in applications where you have limited fuel by allowing you to use what you do have in conjunction with propane.
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