Topic: Valve and Valve guide question

[Fatlip]

I have a 1978 CB750k and I am trying to replace my valves,valve springs and valve guides.
 I am having trouble finding Valve train components for this year model that arent super expensive.
I was wondering if anyone knows where i can find them for a decent price.  Also is it possible to use valves/valve guides for the 69-76 models?  is there any difference?

[flybox1]

I have a 1978 CB750k and I am trying to replace my valves,valve springs and valve guides.
 I am having trouble finding Valve train components for this year model that arent super expensive.
I was wondering if anyone knows where i can find them for a decent price.  Also is it possible to use valves/valve guides for the 69-76 models?  is there any difference?

good luck   
You're looking at $300+ right there in parts, not to mention valve seals, valve grind labor, and any other head work you decide to have done.
Cycle Exchange
APE(cbrzone.com)
Dynoman.net

[Fatlip]

Well I wouldnt consider $300 to be outrageously expensive. I did find valve springs that are compatible with all the K models for $90.  I just havent seen valves that say they work with the 77-78's that arent 40-50  or more per valve.
Im just wondering whats the difference in the 69-76 cb750k's compared to the 77-78's?

[flybox1]

Well I wouldnt consider $300 to be outrageously expensive. I did find valve springs that are compatible with all the K models for $90.  I just havent seen valves that say they work with the 77-78's that arent 40-50  or more per valve.
Im just wondering whats the difference in the 69-76 cb750k's compared to the 77-78's?

valve OD is larger

[70CB750]

Aren't valve the same for late F?

[flybox1]

Aren't valve the same for late F?

77/78K and F2/3 valves have different part #'s, and isn't the valve keeper config a little different?

[70CB750]

You are right, here is more info:

[calj737]

You might also ping MRieck about this. He appears to be omniscient with these motors/valve trains and their supplies. Especially the heads.

[flybox1]

You are right, here is more info:

Good stuff right there!  Hope that page is in the FAQ's

[Fatlip]

Thanks 70cb750, that pic was super helpful. I went ahead and bought a set of valves off eBay from an older model so I can use the valve keepers and retainers.  Much cheaper than the titanium conversion kits most places are trying to peddle.  Thanks fellas.

[74750k4]

That is good info. unfortunately, does not however, include cam info, which also differs, model to model, year to year.