Is KPD 1930+2752 a good candidate type Ia supernova progenitor?

We investigate the evolution of a binary system which initially has an orbi tal period of 2(h)17(m) and contains a 0.5 M. helium star with a white dwar f companion of 0.97 M., similar to the suggested SN Ia candidate progenitor KPD 1930+2752. We show that the helium star completes core helium burning and becomes a white dwarf before the components merge. The most probable ou tcome of the merger of the components is the formation of a massive white d warf, despite the fact that initially the total mass of the system is above the Chandrasekhar mass.