i want to know about how much rank should an iit aspirint should get to get mechanical engineering in an iit

hey,

for mechanical engineering, the rank depends on what college you want to take admission.

you can find starting and closing rank for mech. engg. in different iits from this link

http://www.askiitians.com/iit-jee-2009-rank.aspx

it will help you to have a rough idea about the ranks.