Hi guys currently building up at 91 Kilauea but cant find the correct seat post and clamp sizes anywhere, tried to roughly measure and definitely seems to be 26.something!!?
I think I'm correct saying that the Kilauea was first introduced in 1992, but didn't make it into the catalogue that year as it was a late addition. This may explain why the frame spec is somewhat hard to find.
Anyway, I believe that your frame may require a 26.6mm Seat Post. That size does fit other Kona frames around that time.