Combustion chamber size on RB26 head?

[DoughBoy]

Hi guys,

Would anyone have a validated figure for the cc size on an RB26 head? I've heard alot of conflicting values ranging from 50cc up to 72cc - and have no idea what it actually is.

I would cc my own head but laziness and the fact there isn't one ready to measure here stop me.

Thanks!

[Sydneykid]

The one I have on the flow bench right now is 63 cc's.

[DoughBoy]

Top stuff! Thank you kindly sirrah!

[DoughBoy]

Ok, another pop quiz - what is the compressed thickness of the std. nissan head gasket on an RB26?

[Sydneykid]

Thye are 1 mm out of the box and they don't compress very much, I use 0.9 mm for compression ratio calculations.

[DoughBoy]

Once again SK you are a wealth of information! Thanks for the prompt responses!