I have cultus 2008 model which i purchased used when it was at 70k on odometer. the car was previosly overheated by owner , it gave white smoke in morning startup, i replaced the head valve seals and it rectified the problem. But again it got overheatd by me on highway( reason: didnt closed the radiatr cap proprly) i was on highway and it was 2 am at night, i knew my car has overheatd but i could nt pull over coz i was with my family. SO i kept running it for another 40 50 kms. the car totally broke down at Toll. so i had to stop and call for help. In the next morning took it to mechanic and replaced the gasket only and some little parts( rubber, seals). but after that there is rattling sound ( tak tak) coming from engine at 1000-3000 rpms rev. i have shown to nummbr of mechanics , they all saying its connecting rod noise. and i have to go for engine overhaul.
i want to know what will be the estimated cost for engine rebuild ? and please suggest mechanic, workshops which can do engine overhaul in hyderabad(first preference) , or in Karachi?