Engine ID

[kjohnson63]

Hey guys need help identifying an engine I just received. The serial number on the engine is cb750e-2201938.

 

[DesmoBro]

.....cb750......does it say honda on it?

 

[kjohnson63]

Lol only a couple times I think

 

[kjohnson63]

I've been told it is a 73 Honda cb 750 four. Hope this helps

 

[VonYinzer]

Uh... What exactly are you trying to ID? It's a SOHC CB750 engine. What else do you need?

 

[kjohnson63]

Well I'm confused because the airbox says 750f on it which means that would be a late 70s and not the 69-76 correct? I am new to this so I apologize about the questions.

 

[VonYinzer]

All good man. Just need to be specific when asking so we can help. Are you talking about the airbox itself or the side cover?

 

[DesmoBro]

Any pictures?

 

[carnivorous chicken]

Earlier airboxes said CB750F -- at least that' s my experience (unless someone went around replacing earlier airboxes with later one, and I kind of doubt that happened).

 

[VonYinzer]

Wouldn't a 73 CB750 be considered an F3 model?

 

[carnivorous chicken]

K3. F's came out in 1975, and the F3 was 1978. But they may have stamped the airbox 750F (again, unless I'm having a spasmodic brain fart) to denote it as being a four. I am pretty sure that's why the 350F was designated "F", to separate it from the 350 (twin), as there wasn't much supersport about it (at least not compared with the 550F and 750F, 4-1 exhaust, etc.). Just speculating here.

 

[kjohnson63]

Here's a pic of the id tag on airbox

 

[xb33bsa]

looks like a 74 k this cycle chaos is a pretty handy resource for id'ing a lot of jap bikes,although far from complete on all brands/models scroll down dis paige
http://www.cyclechaos.com/wiki/Honda_CB750K

 

[Tim]

E = Engine. The CB750E on the engine has nothing to do with if it was stuffed into a K or F bike. The heads on the F are different tho from what I recall.