Brake Judder?

If my rear disc was warped or even bent would it judder when under pressure? when on my rox it runs fine until I heavy brake on the rear! Think i may of damaged it when taking the engine out Other than that it runs fine now

 

A warped disc is highly likely your problem mate for the symptoms you describe

 

Either that or your rear wheel isn't installed correctly and slightly off balance.

 

please tell me you tightened your wheel up ffs lmao.. we only done it up slightly before the engine was back in!