Danke Geroge
will try the 12 deg. idle static, but hope for some dyno data from a team member.
1) new ATI damper
2) 4.02 bore (only)
3) Ross pistons
4) rest of engine is stock, ok double groove mains, oil channel mods etc.
5) using the TFS 195 heads (so the small heads 190 cc in port and 112 cc
out port, 62 cc chamber) ... to overhaul the iron heads was too expensive
in Germany
5) newly calculated compression with now 71 deg. IVC with assumed gasket thickness of 0.0625 (Fell pro standard) provides app 10.2 static and app 7.8 dyn.
=> could not identify any detonatons on Germyn 95 gas up to 3500.. 4000 rpm (max for new engine for now, with my current 6 deg advance)...worst case we have super+ with 98)..