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Oil Field Engines

Myrick Eclipse 4HP Project Thread


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  #1  
Old 05-28-2016, 09:36:22 AM
StrikeForce StrikeForce is offline
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Default Myrick Eclipse 4HP Project Thread

I have always liked the big oil field engines. They are so smooth and unique, but also very large and have an equally large price tag. I also had not planned on getting a new project, but thanks to EngineAds, I found a Myrick Eclipse project I could not pass up. I took the drive from SE PA to the NW corner of PA on a wonderful Memorial Day weekend day to pick it up. I was excited for the project but once it was off of the truck, that kicked into high gear! I cant wait to get this running.

So here is the project thread. I am sure I will have plenty of questions so follow along if you don't mind my random ramblings I will post. This will be a nice addition to my 1 3/4HP Monarch hit miss and my 5 HP Ottawa log saw throttle governed. I have never worked with a hot tube engine before so, as an engineer, I am intrigued to learn more!

Enjoy the pictures, I'll try to keep this updated!
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Old 05-28-2016, 09:37:34 AM
StrikeForce StrikeForce is offline
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Default Re: Myrick Eclipse 4HP Project Thread

Some more pictures. Getting it off the truck was fun. I think I need a bigger loader!
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Old 05-28-2016, 02:37:42 PM
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PaulGray PaulGray is offline
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Default Re: Myrick Eclipse 4HP Project Thread

Judging from the serial number 1981 (I think that is what I see), it would be one of the last engines badged as a Myrick. Some where in around s/n 2000 and circa 1920, some engines went out as Myrick-Luther Co, and later as plain old Luther. From what I've seen, the Luthers have more rounded corners on the top of the cylinder support. Nice runners overall. Usually the wrist pin bushing clamp screw needs tightening to take up play. You'll know when you get it apart. Have fun!
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Old 05-28-2016, 03:58:04 PM
StrikeForce StrikeForce is offline
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Default Re: Myrick Eclipse 4HP Project Thread

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Originally Posted by PaulGray View Post
Judging from the serial number 1981 (I think that is what I see), it would be one of the last engines badged as a Myrick. Some where in around s/n 2000 and circa 1920, some engines went out as Myrick-Luther Co, and later as plain old Luther. From what I've seen, the Luthers have more rounded corners on the top of the cylinder support. Nice runners overall. Usually the wrist pin bushing clamp screw needs tightening to take up play. You'll know when you get it apart. Have fun!
That's a bad picture, the serial number is 1198 so I think its 1917-18 era.
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Old 05-28-2016, 07:33:20 PM
Bill Hazzard Bill Hazzard is offline
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Default Re: Myrick Eclipse 4HP Project Thread

It looks like it has an early style intake valve chest on it.
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Old 05-29-2016, 07:15:37 AM
StrikeForce StrikeForce is offline
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Default Re: Myrick Eclipse 4HP Project Thread

Small correction, the serial number is actually 1196 not 1198, just for the record.

One question. Does anyone have any specs or dimensions on the governor springs? They are missing from the engine so outside of pictures, I don't have much to start my search with. I am thinking I could find springs at the hardware store (unlikely) or use a set that are from a different engine but are close to the same. While I work on getting it unstuck, I like to work on finding out where my replacement parts need to come from. Thanks!
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Old 05-29-2016, 11:38:33 AM
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Default Re: Myrick Eclipse 4HP Project Thread

The springs on it were something like 5/8-3/4" OD but very stiff for running it slow. I've used screen door springs cut down to (from memory) about 3-4". There should be two threaded adjusters to dial in the tension and speed on one side. The gasket/rings parts can be had from the sponsors pages. Good idea to lap in the intake valve to get good gas seal and make for easy starting. With the hot tube you have, and if you wish to slow it down, you might want to try running it without the chimney lining to keep it from getting too hot and pre-igniting.
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Old 05-29-2016, 08:34:14 PM
W.P.Klein W.P.Klein is offline
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Default Re: Myrick Eclipse 4HP Project Thread

Congratulations on bringing home a little workhorse from the oilfields! Take heed to whatever Paul Gray tells you and be sure to get yourself a copy of the Coolspring Bores and Strokes publication that Paul wrote a couple of years ago on the Myrick company and their products. It is a treasure trove of good info! Bill Klein
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Old 06-30-2016, 11:31:15 AM
StrikeForce StrikeForce is offline
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Default Re: Myrick Eclipse 4HP Project Thread

Today was a successful day of vacation from work. Heated the cylinder up nice and evenly, was able to work the piston out finally! I also was able to loosen up the governor sleeve so it moves freely.

Couple of questions:
1) In my process of heating, I must have heated up the connecting rod too much. The bearing popped out and it looked like it was soldered in previously. What is the correct way to re-attach that?
2) Is there anyone making fan shrouds? Mine is 60% and I am considering taking it to a local chimney place to see if they can re-create it. If there is someone making these, I would rather support their business.
3) Is it recommended to replace the piston rings or try and re-use them? Two of the three are loose, the other isn't far behind if I am careful.

Now that most everything is loose or apart, now we are starting the find and procure parts stage. This is usually where I turn up the flame on the project and cant sleep at night because I want to get it running! Thanks in advance.
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Old 07-09-2016, 10:34:28 AM
StrikeForce StrikeForce is offline
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Default Re: Myrick Eclipse 4HP Project Thread

So far, the project is moving along at a pretty good pace. I wasn't expecting to be this far along to date. I was able to get everything loose, cleaned up, and almost all put back together. With some help, I made a burner pipe and have a chimney (the only missing piece) on its way. Finding out today that the combined intake/exhaust channel is a bit of fun. I am getting a little bit of exhaust valve flutter on intake and getting some air out of the gas pipe on compression. I had worked on the valve assemblies but it looks like a few more adjustments are required. I didn't think I would have it going until later this year, but if all continues well, it make be able to appear at our local August show!
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