Cylinder head bore sizes

[Dean]

Can someone tell me if there is a difference between the bore size in type 1 cilynder head and if so what is the difference between 1300 tp and 1600 tp.

I have 2 heads and they have no part numbers on them, only Metan Mt160, which is the gauge of the metal i believe. The bore measures 77mm.

Thanks

 

[sparkywig]

85.5mm with a 69mm crank will give you a stock capacity of 1585.

1500 single port and 1600 twin port heads are machined to 95mm where the barrels fit.
I think 1200's had a bore of 77mm but that's the cylinder size, not the machining in the head.