Topic: rocker tower placement

[mycb750k6]

I just got a 71 CB750 K1 basket case and the head has been removed and the cam and part in a bag. How can I figure out which towers go where since these are matched parts and need to go back together the same way they came apart - right?

[MCRider]

Left to right, no way of knowing, don't matter, flip a coin. The bearing caps are alpha/numeric coded to the holders, thats all.

You might find a clue, like if a dowel is stuck in one and not the other, or a puck is stuck to one and matches a missing puck in the head, etc. But if no clues, don't worry about it.  IMO

[mycb750k6]

Thanks MC. I was reading the H-book on the topic and that's what he was asserting. Anyway I'll play with it and see what I can figure out. BTW, anybody here do valve jobs and or porting of these heads that you know of?

[MCRider]

Thanks MC. I was reading the H-book on the topic and that's what he was asserting. Anyway I'll play with it and see what I can figure out. BTW, anybody here do valve jobs and or porting of these heads that you know of?

Mike: MRieck on the forum
Big Jay: APE
Buz: Dynoman
CycleX
Any local engine machine shop can do just a valve job. I'd stay with the above for porting as they are familiar with the CB750

I'm sure there are others here, I'm leaving out.

[bryanj]

2nd vote for Mike he does beautiful work

[GammaFlat]

Looking at your cam and where the towers meet it, you can kinda see a "fingerprint" wear pattern.  You may need a magnifying glass but I think you'll get there.  I have the same problem with a K0 engine and luckily or not so luckily, it's easy to tell what goes where  . 

[mycb750k6]

How does one find Mike: MRieck on the forum?

And thanks Gamma. I think I can now figure that out.

[bryanj]

Go to members link in list of links and then page 238

[mycb750k6]

I got it. The steel guides left in the rocker made it easy.