Vintage RB racing engine help

[ocrcmec]

I have an old nitro RB engine 3.5 and it has no markings besides what looks like a hand inscribed serial number (g401131) I have nothing about the background on this engine and it is in my old bmt pan car. Does anyone know anything about this engine or does anyone have one like this?

 

[WoodiE]

@ocrcmec other than knowing this is an old RB Concepts nitro engine, what other information are you looking for exactly?

 

[ocrcmec]

I'm kind of looking to see if anyone knows any history on engines similar to mine or if theres any significance with this engine

 

[mofo_278]

I recently acquired that very same engine new in the box was wondering same thing any info on it has strange purple head on it just like the above picture

I have an old nitro RB engine 3.5 and it has no markings besides what looks like a hand inscribed serial number (g401131) I have nothing about the background on this engine and it is in my old bmt pan car. Does anyone know anything about this engine or does anyone have one like this?

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I recently acquired this very same engine along with a bunch of vintage serpent parts and tires my engine appears new in the original box still I thought maybe at first somebody to change the cooling head but after seeing yours it's the exact same engine