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NHE conversion to gasoline?


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  #41  
Old 10-02-2015, 11:21:39 AM
sdowney717 sdowney717 is offline
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Default Re: NHE conversion to gasoline?

Sounds good, those clicker pumps draw maybe under 2 amps?
As long as if the gen quits running the pump shuts off it can go there.
And it should when cranking also run so it can prime.

You can always run a typical automotive 30 - 40 amp cube relay using for signal that circuit, if you ran a more powerful pump.

If you used a relay, you could also use a push button switch to prime the pump so as to limit cranking time with power wired direct from battery to pump.

You might be able to do that direct wired into the Onan circuit as long as putting power there with it off would not hurt anything, otherwise the cube relay will shield the existing Onan circuitry.
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  #42  
Old 10-02-2015, 11:37:46 AM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

I know one Onan I had would activate the priming circuit if you rocked over to "STOP". That was pretty nice.
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  #43  
Old 10-02-2015, 12:33:44 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

NHE's controls don't do that. Got to add a separate switch.

Or seems you could do that if you modify the control circuit with a few diodes and a relay.
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  #44  
Old 10-02-2015, 10:19:19 PM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

Well, it fits. Good! But the choke is a bit of a problem. It has the electric part, and the vacuum pull off. The problem is that I don't have a port to pull vacuum from. They show a port at the top of the manifold, but mine has just the bung for it. It was not drilled. Could drill and tap and try to catch all the shavings. But in the motorhome, you don't have any vertical space to work with. Grrr. Any suggestions?
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  #45  
Old 10-02-2015, 10:44:24 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

Choke hose on my similar 7NHM goes to a port on carb right next to intake manifold. Hole likely goes straight into throat right there, but I don't remember.
http://www.smokstak.com/forum/attach...5&d=1424973372 <---( ignore arrow & circle, pic was for another thread subject)
http://www.smokstak.com/forum/attach...4&d=1341546175 <---( ignore arrows, pic was for another thread subject)
http://www.smokstak.com/forum/attach...5&d=1384037934 <---- general overall pic of my NHM and carb
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  #46  
Old 10-02-2015, 11:06:58 PM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

I don't have that port shown on your carbs. The third link I don't have permission to open.
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  #47  
Old 10-03-2015, 12:26:28 AM
len k len k is offline
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Default Re: NHE conversion to gasoline?

I have not looked into the permission system here, I don't understand why it won't let you see it.

Here's another way to see the 3-rd pic, maybe
Post #24 of http://www.smokstak.com/forum/showth...=126819&page=2
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  #48  
Old 10-03-2015, 07:12:19 AM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

Still won't let me. I wonder if I am the only one. In any case, I don't have ports on the carb. And without the port drilled and tapped on the intake, I don't know of a vacuum port I can use. So now I am a little stumped. I may have to figure out a way to drill and tap that intake.
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Old 10-03-2015, 10:23:20 AM
Bucky1320 Bucky1320 is offline
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Default Re: NHE conversion to gasoline?

Running on a temporary gas supply now. Need to figure out permanent choke solution, but can start it manual choke for now. Running just a tad rich. The connection from the fuel line I bent up nicely to the carb leaks. Not from around the threads but from around the tube. Snugged it up a little, and still leaks. That's a fairly small issue all things considered. Will get that figured out. Not sure if there is a ding in the fitting female side or what. The Onan fittings aren't special are they? Regular hard fuel line tubing faired?
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  #50  
Old 10-03-2015, 01:11:39 PM
len k len k is offline
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Default Re: NHE conversion to gasoline?

Might try loosening it and wiggling it while you retighten it , might be an alignment issue. I had that problem on my flared oil lines to my furnace. Don't know what your Onan uses , my similar NHM just had pipe thread I believe.

The stealthy picture was just of the whole genset , to show similarity to between NHE and NHM. Nothing unique to the carb.
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