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gap

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murdock:
creo que ahora si lo he entendido

If the clearance between the wall and the piston is the total clearance, what clearance should I request from the machinist, considering they are aftermarket pistons, 0.001 or 0.002? sounds like the thickness of a hair to me

Nurse Julie:

--- Quote from: murdock on May 26, 2021, 10:45:04 PM ---creo que ahora si lo he entendido

If the clearance between the wall and the piston is the total clearance, what clearance should I request from the machinist, considering they are aftermarket pistons, 0.001 or 0.002? sounds like the thickness of a hair to me

--- End quote ---
You are getting yourself so confused for no reason at all. It is the piston to bore clearance which should be 0.0254mm. It really is as simple as that.

philward:
I think what murdock is confused about is:- is the total bore size 0.0254mm bigger than the piston size (or is that 0.0254mm the clearance at each side of the piston)
(I'm playing the devils advocate for the sake of translation here)

Bryanj:
You need the hole (bore) to be 0.0254mm bigger than the piston NOT 0.0254 per side but total

fogrider:
Correct, that's what the Honda charts show - piston size and bore size, the mean difference being .025mm (.001"). That's the dimension  Murdock asked for  with his original drawing. But as has been pointed out, check with Cruzzing, are they happy with that clearance for their particular piston material ?

Hope Murdock has stopped scratching his head now after all this up and down (side to side ?) discussion !

Now, let's start again with ring gaps !!!!

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