SOHC.co.uk Forums > CB750

cylinder head studs

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Bryanj:
I think the F2 has some domed nuts and different oil drain routes so the heads and barrells dont transfer.

K2-K6:
Think the F2 has half the number of drains from head back to sump (stand to be corrected)  trying to keep oil retained to prevent guide wear maybe?

If oil level is higher around valve stem,  then with any wear they just smoke more.

Trigger:
What i have never understood is why all the aftermarket studs are the same thickness all the way (maybe because its cheap ). Honda spent a few hours designing the studs to be tapered for a reason, it would of been much cheaper for Honda to make the studs like the aftermarket ones but, they didn't for a reason.
I did do the maths on the oil flow to the head sometime ago and how much it was reduced by using aftermarket studs but, can't find the scrap of paper at the moment. I did this as i use upgraded O rings on the oil ways and found with the non tapered studs and larger O rings the oil ways became almost blocked  ;)

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