I have Profi water cooled 4 and air cooled V8.
From my www.coolmodelengines.com
"Eric whittle 10cc V8 Aero engine series in Model Engineer, April 1995,
download article with plans as 14 pd f's, patience required"
the link did not work.
I will look in my archive for the pdf files.
Haary
I have several unfinished engines (NAMES) at about 90%, have plans.
fustrated with governor
could spare gear + cam for other parts
Also looking for DIY CNC info, have Velmex UniSlide XYZ
check out www.coolmodelengines.com
Harry