  The influence of recently discovered topological transition between type I
and type II Weyl semi-metals on superconductivity is considered. A set of
Gorkov equations for weak superconductivity in Weyl semi-metal under
topological phase transition is derived and solved. The critical temperature
and superconducting gap both have spike in the point the transition point as
function of the tilt parameter of the Dirac cone determined in turn by the
material parameters like pressure. The spectrum of superconducting excitations
is different in two phases: the sharp cone pinnacle is characteristic for a
type I, while two parallel almost flat bands, are formed in type II. Spectral
density is calculated on both sides of transition demonstrate different weight
of the bands. The superconductivity thus can be used as a clear indicator for
the topological transformation. Results are discussed in the light of recent
experiments.
