  Various QCD correlators are calculated in the instanton liquid model in
zeromode approximation and $1/N_c$ expansion. Previous works are extended by
including dynamical quark loops. In contrast to the original "perturbative"
$1/N_c$ expansion not all quark loops are suppressed. In the flavor singlet
meson correlators a chain of quark bubbles survives the $N_c\to\infty$ limit
causing a massive $\eta^\prime$ in the pseudoscalar correlator while keeping
massless pions in the triplet correlator. The correlators are plotted and meson
masses and couplings are obtained from a spectral fit. They are compared to the
values obtained from numerical studies of the instanton liquid and to
experimental results.
