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Onan 2LK (experimental model) Has Come to Life!


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Old 12-04-2017, 08:05:01 PM
JohnnyC JohnnyC is online now
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Default Onan 2LK (experimental model) Has Come to Life!

This evening I fired up my newly acquired Onan 2LK on gasoline for the first time after bypassing a potentially faulty fuel pump and a much needed oil change. To my surprise it ran flawlessly under varying loads up to 1.5kw (75% max load). Absolutely NO hunting or stalling. It did not smoke either.

I attached 4 pictures below with an explanation of each picture:

First picture shows the voltage to be at 133.8 vac no load. A bit high, but can easily be adjusted as needed.

Second picture shows the condition of the oil I drained from the 2LK. Blacker than black. The 2LK's crankcase now has fresh 10W-30.

Third picture shows the 2LK with a 1500 watt heater in the background. The 2LK handled the load without a problem.

Forth picture shows the build sheet for this 2LK. It is an experimental model with a few special goodies. I am not sure why Onan released this experimental model and not too sure how rare it is, but it is cool seeing dual points and condensers. I wonder if Onanparts.com has replacement points in stock?

Lastly, I recorded a short video showing how this little 2LK performed under load. Click on the following link to see for yourself.

https://www.youtube.com/watch?v=upXiHq41jzY

JohnnyC
New Jersey
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Old 12-05-2017, 04:34:35 AM
AngrySailor AngrySailor is offline
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Default Re: Onan 2LK (experimental model) has come to life!

Johnny's secret is out... pic #1, ninja turtle confirmed
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Old 12-05-2017, 01:51:25 PM
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Default Re: Onan 2LK (experimental model) has come to life!

Johnny, Where is the dual points setup? Is it behind the standard points cover?
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Old 12-06-2017, 12:46:55 PM
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Default Re: Onan 2LK (experimental model) has come to life!

Motorhead-i have been wondering that also. another thing, being it is (EXPERIMENTAL) does he have a 1 off gen?????

if so JohnnieC is going to need to do a NICE restoration, not one of those throw it together jobs he has been doing.
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Old 12-06-2017, 01:17:18 PM
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Default Re: Onan 2LK (experimental model) has come to life!

They have flicker points so you don't get any pulsing from the ignition if I remember right?

Sounds like a good ol lk.. good score!
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Old 12-06-2017, 09:06:36 PM
JohnnyC JohnnyC is online now
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Default Re: Onan 2LK (experimental model) has come to life!

Quote:
Originally Posted by Motorhead View Post
Johnny, Where is the dual points setup? Is it behind the standard points cover?
I think the points cover is an enlarged cover when compared to a standard points cover.

Quote:
Originally Posted by squidtrap View Post
Motorhead-i have been wondering that also. another thing, being it is (EXPERIMENTAL) does he have a 1 off gen?????

if so JohnnieC is going to need to do a NICE restoration, not one of those throw it together jobs he has been doing.
I really don't know what "experimental" really means, but I doubt it is a 1 off gen. I still wonder what the "special cam" means.

Quote:
Originally Posted by yellowlister View Post
They have flicker points so you don't get any pulsing from the ignition if I remember right?

Sounds like a good ol lk.. good score!
Yes, that is what I read in the LK manuals. They are flicker points. I assume they became available in standard production?

I cannot find any 2LK manuals in the electronic library, only LK manuals for the 2.5KW models which seem very similar. Does the 2LK models predate the LK models??

JohnnyC
New Jersey
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Old 12-06-2017, 09:13:55 PM
JohnnyC JohnnyC is online now
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Default Re: Onan 2LK (experimental model) has come to life!

STUPID QUESTION

What is the lever on the mechanical fuel pump do as seen in the picture below? The lever twists 90 degrees. Since my fuel pump is broken I am not sure if it enables and disables the fuel pump. I cannot find any 2LK manuals on our online manual site.

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JohnnyC
New Jersey
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Old 12-06-2017, 09:19:19 PM
turtmaster turtmaster is offline
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Default Re: Onan 2LK (experimental model) has come to life!

johnnyc, i wonder if your 2LK has a more "de-tuner" cam, see if it will handle 3000w for about 5 to 15 minutes at least and if so, at what hz and v.

my 900+ hour 2.5 lk can handle 3 kw (did not measure the actual wattage drawn, i just used 2, 1500w space heaters on high) but don't quite remember the v and hz

JohnnyC, that lever is a manual fuel primer, as far as I know it moves the linkage like the inside cam lobe, 1 "pulse" at a time
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Old 12-06-2017, 09:27:06 PM
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Default Re: Onan 2LK (experimental model) has come to life!

Yes the lever is a primer should you use a tank that's mounted below the carb.
Just wiggle the lever seemingly a hundred times to get the carb filled and then it'll run fine.

*But if the cam that drives the pump is at high lift you can prime all day and it may not work. Roll the engine over and you can feel when it's right.
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Old 12-06-2017, 09:32:30 PM
JohnnyC JohnnyC is online now
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Default Re: Onan 2LK (experimental model) has come to life!

Quote:
Originally Posted by turtmaster View Post
johnnyc, i wonder if your 2LK has a more "de-tuner" cam, see if it will handle 3000w for about 5 to 15 minutes at least and if so, at what hz and v.

my 900+ hour 2.5 lk can handle 3 kw (did not measure the actual wattage drawn, i just used 2, 1500w space heaters on high) but don't quite remember the v and hz

JohnnyC, that lever is a manual fuel primer, as far as I know it moves the linkage like the inside cam lobe, 1 "pulse" at a time
I will try to load it up beyond 2kw. I believe it will easily do more than 2kw since these Onans are under rated. As for the lever, my thought was it is for priming, but since the pump is shot, the prime don't work either.

I hope to do more testing by the end of the weekend, as well as giving the 2LK a complete bath, but it looks like I have a busy week and weekend ahead of me and I'm also working on another generator project which will require me to yank the motor for a complete disassembly.

Quote:
Originally Posted by I like oldstuff View Post
Yes the lever is a primer should you use a tank that's mounted below the carb.
Just wiggle the lever seemingly a hundred times to get the carb filled and then it'll run fine.

*But if the cam that drives the pump is at high lift you can prime all day and it may not work. Roll the engine over and you can feel when it's right.
I yanked that lever at least 100 billion-trillion times and no gas came out of the line between the pump and carburetor (I have the line disconnected). The pump is shot .

JohnnyC
New Jersey
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