TTA Combustion Chamber Volume

[AKTURBOTA]

What is the combustion chamber volume for the TTA's cylinder heads. I once read in an ATR news letter that the GN heads were 48cc and the TTA heads were 38cc. Is that true?

 

[Jicaju]

41cc's is what my stockers measured.

 

[AKTURBOTA]

I guess the 38cc number is a nominal value that will vary with the various head castings that are available.