Help identifying this engine

[jaggs1278]

Hello everyone I have seen an engine with these numbers on the engine RC01E-2120874 is this a F model?

 

[jaggs1278]

I found this engine on ebay and want to make sure that it will fit my 78 CB750K. someone please respond.

 

[jaggs1278]

That is the engine number the seller gave me and it seemed weird as i was under the impression that they start with CB750 - some number. I didnt find model with series 2120874 as well.

 

[dirtdigger]

No this will not fit the 78. The motor number you have listed is for a dohc motor and the 78 is a sohc motor, they are completely different.

 

[amc49]

X2, I'm pretty much with that too. RCO is a beginning for '79 and later DOHCs, they will NOT fit a SOHC '78 model.

 

[jaggs1278]

thanks guys