| Re: What model Onan was the 4.0 for the GMC ? [message #367671 is a reply to message #367670] |
Mon, 22 November 2021 12:49   |
hertfordnc
Messages: 1164
Registered: September 2009
Location: East NC
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JohnL455 wrote on Mon, 22 November 2021 12:33The original opposed engine came from lawn tractor origins such as the John Deere 318. There it ran up to 3600 RPM governed speed (2 x our 1800 RPM) and likewise had double the rated horsepower. All the details were given by the retired Onan project engineer at a rally seminar (maybe Eau Claire ? A few years back).
That describes most Onans of all different sizes.
But I'm just exploring some optins.
I have a good working BF which i can make fit into my generator space with a bit of persuasion.
But if the BF is the base of the 4000 power drawer then i wonder if i could swap the externals?
Dave & Ellen Silva
Hertford, NC
76 Birchaven, 1-ton and other stuff
Currently planning the Great american Road Trip Summer 2021
It's gonna take a lot of Adderall to get this thing right.
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