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Oil Field Engines & Related Equipment

20hp Bessemer Question


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  #1  
Old 09-28-2010, 08:20:56 PM
corbinsmc corbinsmc is offline
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Default 20hp Bessemer Question

I just pick-up a 20 hp Bessemer and took it to a local show this past weekend. It is low on compression. I spoke with the person I bought the engine from, he said that it has 4 new rings and he left the other 2 rings out. The engine also back-fired when trying to bump start it. Any suggestions of what to look for?
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  #2  
Old 09-28-2010, 11:22:06 PM
Rod Fielder Rod Fielder is offline
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Default Re: 20hp Bessemer Question

What type of ignition do you have. How hot was the tube if is hot tube ign. They will backfire with too much propane pressure or too much propane in general. What type of regulator and what type of valve on the carb. Photos help also

rod
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  #3  
Old 09-29-2010, 05:34:41 AM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

It is a hot tube. I have a low pressure regulator on it set at 11 inches of water. The valve on the carb is a diomond valve on the gas side and a gate valve on the air side.
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Old 09-29-2010, 11:00:16 AM
Rod Fielder Rod Fielder is offline
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Default Re: 20hp Bessemer Question

Has the engine ran before with this regulator. When was the last time it was running. Open the air side up and open up the diamond valve to 1/8 for starters. What type of regulator do you have on it. I have tried a lot of very expensive regulators for propane, welding, etc. All failed. A cheap propane regulator at the propane tank valve will always work best. Go to a camper supply, lowes, harbor freight, etc. Any chance of some photos. If the tube is too hot it will backfire also. Hang in there, you'll get it. Have you seen this engine run before. Has the head been off and the piston removed.
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Old 09-29-2010, 08:18:51 PM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

Rod, thanks. Yes we ran the engine this past weekend for 4 days at a local show. We started each time by belting to a tractor. I will try to post pictures this weekend, will probably be Sunday.
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Old 09-29-2010, 09:04:02 PM
Rod Fielder Rod Fielder is offline
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Default Re: 20hp Bessemer Question

Quote:
Originally Posted by corbinsmc View Post
rod, thanks. Yes we ran the engine this past weekend for 4 days at a local show. We started each time by belting to a tractor. I will try to post pictures this weekend, will probably be sunday.
how hard does it turn over with the compression release open. Try starting it on a cooler tube. Get it ready to fire up and then light the hot tube. Kick it after 5 minutes, 10 minutes, etc. To see if that helps. Might do the trick.
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  #7  
Old 09-30-2010, 07:36:05 AM
Steve NW Ohio Steve NW Ohio is offline
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Default Re: 20hp Bessemer Question

You stated in first post that some work had been done with the piston/rings. Suggest you double-check position of piston at BDC in relationship to the transfer port. You should be able to check rotation of piston is correct as well. I have found, that on my engines, the piston location does effect starting and ability to operate riliably at slow speeds. Steve
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Old 09-30-2010, 04:06:00 PM
FArmstrong FArmstrong is offline
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Default Re: 20hp Bessemer Question

When it backfires, does smoke come out from back of piston at rod connection? If so, you probably need to add packing.
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  #9  
Old 09-30-2010, 07:38:19 PM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

Steve, can you give me a little more discription on piston position. How do I check the pisition of the transfer port, once the head is off. Also, what is the proper orientation of the piston? Thanks for your assistance. Scott

---------- Post added at 07:38 PM ---------- Previous post was at 07:36 PM ----------

Farmstrong, when it back fires, smoke does not come from the psiton rod. Thanks.
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Old 10-01-2010, 06:46:20 AM
Steve NW Ohio Steve NW Ohio is offline
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Default Re: 20hp Bessemer Question

It isn't neccessary to remove the head, just remove the plate on the transfer port.
When the piston reaches BDC, the head of the piston should just be clearing the port. at that point. You can adjust the position by loosening the jam nut on the connecting rod at the cross-head and rotating it. At the same time you will need to look (through the port opening) at the top surface of the piston itself for a flared region which needs to be aligned with the transfer port. I will try to locate a picture which may explain this better. Steve
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  #11  
Old 10-02-2010, 11:44:56 AM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

Steve, since I am new to this type of engine, I have a dumb question... the transfer port is the where the exhaust comes out, correct? Thanks, Scott
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  #12  
Old 10-02-2010, 02:41:06 PM
Rod Fielder Rod Fielder is offline
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Default Re: 20hp Bessemer Question

The transfere port cover is rectangular on the top of cylinder with 8 bolts. When the piston is at bottom dead center {all the way back towards bedplate}, the top of piston should be flush with the rear opening of the transfere port. Can be up to 1/16" either direction acording to bessemer spec sheet. The lugs or deflectors on the end of piston should be on either side of the transfere port.
If you are belting it up and running it and it runs good, probable have a regulator or hot tube situaiion. What type of carb is on your engine, a round disc or valve with spring type. Photos will help. Call if you want to talk about it.

Rod
740-350-7427
leave message if no answer
i'm running several big engines today and it's noisy around here
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  #13  
Old 10-03-2010, 05:54:30 PM
corbinsmc corbinsmc is offline
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Photo Re: 20hp Bessemer Question

Here are the pictures you asked for. Due to my daughter getting married this weekend, I have not had the chance to take the trasfer plate off and see what is going on. Hope to get this done one night this week. Thanks again for everyones advice. Scott
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  #14  
Old 10-03-2010, 05:56:35 PM
corbinsmc corbinsmc is offline
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Photo Re: 20hp Bessemer Question

Here are a couple of more pictures.
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  #15  
Old 10-03-2010, 06:09:26 PM
FArmstrong FArmstrong is offline
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Default Re: 20hp Bessemer Question

Is that a gate valve on your air intake?
Fred
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  #16  
Old 10-03-2010, 06:20:23 PM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

Fred, yes that is a gate valve on the air intake. Scott
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  #17  
Old 10-10-2010, 06:38:41 PM
corbinsmc corbinsmc is offline
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Default Re: 20hp Bessemer Question

THANKS for all your advice..... Well, took the head off and the transfer port cover. Aligned the piston with the transfer port and rotated the piston so the lugs where across from each other. Put her back together. No back firing...that is a good thing. We still do not have a whole lot of compression. When we bounce it, we get one good hit and then 2 to 3 wimpy hits before it just dies. Not sure if I should move the piston forward some more or just take it out and get me some new rings... any suggestions?

Also, my wife really wants a Bessemer shirt or jacket, anyone know where I can find one?

Thanks again for all advice, greatly appreciated.
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  #18  
Old 10-10-2010, 08:04:17 PM
Randy L Peterson Randy L Peterson is offline
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Default Re: 20hp Bessemer Question

If it has 4 new rings in it all ready you might need some run time to get em to seat.. I had one engine took a good 50 plus hours of run time before I had some nice compression..
RLP
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  #19  
Old 10-24-2010, 06:34:09 AM
corbinsmc corbinsmc is offline
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Thumbs up Re: 20hp Bessemer Question

Thanks to all of you. Ran our engine at a small show last weekend. Had to belt her up to get it started. However, it did feel like the compression was coming back. Yesterday, I played with her and still could not start her on LP. So, I put just a little gas in the air intake. Took me a while to get the air right, but once I did, she fired right up. What a good feeling to start by hand. THANKS again for everyone's advice. Scott
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