My mate has had one of these rebuilt,pistons,liners bearings etc by an experienced mechanic/machinist.After rebuilding and fitted into van engine started almost straight away but had no oil pressure.Various things have been tested,block crack tested,oil pump changed x2,block replaced and engine rebuilt again etc etc.Now i remember an iveco van i did years ago [same engine] had this same problem and i cured it.It was down to oil seals in filter housing put in wrong [different thickness]but by eye look the same.Has anybody else had this happen to them,i've tried to tell him to get a complete oil filter housing assembled but he says he can't get one.Fiat dealers useless,iveco don't want to know.Surely sould be able to source one.CAN ANYBODY "HELP":bang: