Re: Is this CB750F a Good Buy?

Posted by Half-Caf on Apr 25, 2013; 3:40am
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Is-this-CB750F-a-Good-Buy-tp4039828p4039844.html

excessivedemon wrote

<p>Another plus side of this bike (aside from it being the cheapest in the market) is that according to the owner the top end of the engine has been replaced with one from a CB900F  I'm not really sure if that makes getting the engine running more complicated but I'm very much happy with that upgrade. </p>

I'd be willing to bet that the "top-end swap" is referring to swapping out the 750 cams for 900 ones. This is a common mod and is supposed to add a nice performance boost.
I've never seen anyone swap just the heads -the cylinder size, piston doming, and valve size/travel would all be different. And you can't "plop" the 900 cylinders and head on the 750 crankcase without replacing everything down to the crankshaft and boring out the holes to accept the larger cylinder sleeves.
What I'm really trying to say is that he's more than likely just referring to a cam swap