Some of the colleges in which you can get Mechanical Engineering through ECET and their cut-offs are as follows:

JNTU College of Engineering, Hyderabad: 120
OU College of Engineering, Hyderabad: 1600
Bhaskar Engineering College, Yenkapally: 1200
Mallareddy Engineering College, Maisammaguda: 5000

Hope I have answered your question. All the best!