a little brain teaser for you folk with nothing but time on your hands...
there are 4 engines they are all different capacities , totalling 8544cc
they can only be made up from the list below.
1585cc 1641 1699 1745 1760 1775 1835 1904 1915 1956
1968cc 2007 2021 2054 2074 2110 2165 2161 2180 2276
2332cc
so what are they ?