That for which there is no replacement

2CV 652cc big bore kit

Additional displacement has arrived from ECAS in the form of a Burton 652cc big bore kit.  This ups the compression ratio from 8.5:1 to 9:1 and adds 25cc to each cylinder (an extra 8%)  which should produce both more power and more torque*.  Roy at ECAS recommended that a race profile cam from Kent Cams would be a good match for this as the extra breathing the cam provides will be matched by the larger displacement – all providing the fan and tinware are retained to ensure sufficient cooling.

  • Burton’s bench test shows an increase in torque from 6 to 7 but I can’t work out what the units are :-/