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Oil pressure issue / motor rebuild

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MrDavo:
Thanks Ash, though do check the thread for the ignition stud. While I realise they should not be taken as an authority on compatability, one crank DK had was listed for  CB750K 1970-77, another they have is listed as only for a K6. Confusingly, according to John Wyatt's book, F1 comes in at 1976, so does K6, so there could be a change to something around then, it certainly needs checking out.

If it will fit, I'd certainly take you up on your offer, subject to what carnage I uncover, if you have a few rods I'm sure we could pick one out with the same / similar weight code letter, I can print out the Honda service bulletin (which you may have put online) saying which rod goes with what.

AshimotoK0:
I had to nip home at lunch as the missus is away and I thought I had left the steam iron switched on  :-[ :-[, so I checked my cranks. It's defo got the 8mm thread same as the other one ... so over to Trigger  ;D, the F1 engine was one with the more domed 392 pistons.... Thinking about it, I may have a couple or more of it's original rods. Bryan is correct, when the big ends go the shells move in the rods and scuff the surface... it happened on my K0 engine. Are you in Yorks or Lancs?

You don't want the con-rod that I caught the wife using as a litle hammer to hang a picture hook  ::) ::)

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Trigger:
I did show you that the cranks are different Ash, so how they are the same part number is only something that MR Honda can explain ;D

royhall:
The F2 crank appears to have the same part number as well but I'm sure they are unique to the F2?

AshimotoK0:

--- Quote from: Trigger on July 26, 2016, 01:24:11 PM ---I did show you that the cranks are different Ash, so how they are the same part number is only something that MR Honda can explain ;D

--- End quote ---

But mine both have the M8 thread on points side ..so are they OK for the early bikes?

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