help figuring out my engine

[enginebuilderlq9]

I bought a go kart set up with a nighthawk engine on it, however every number I seem to look up on it comes back as not being a real engine. The numbers are listed below, any help would be greatly appreciated since I need to get gaskets for it.


left side of the engine - serial number: RC38E-2500212
under the serial number on the left: UN-225



thanks, dylan
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figured it out, got the cb750L engine, runs like a dream with it being 40 years old.

for anyone trying to figure out based of engine serial alone, this is a complete list but you need the adobe chrome extension
https://vpic.nhtsa.dot.gov/mid/home/displayfile/cf88fcd6-97e5-4b9a-bc6c-53f87eaf4ab3

 

[Travis]

Good job figuring that out. Let's see a picture of that go-kart!