So with everything going smooth my oil pump broke. Engine was re-built with a new one fitted, after 350 km of running in the motor oil pressure kept dropping and coming back .a knocking around from the oil pump pulley side was making noise .belt came off the pulley . 2nd genuine pump fitted , belt put back in place .sump dropped .checked for filings nothing everything clean .oil was perfect. Fired it up and within 2 mins of running 2nd oil pump siezed. Now I'm lost as to what's causing this .? Any input would be highly appreciated . Faiyaz.