Mr. Kashish
I don't think you require any change in the engine so as to make it compatible to run with biodiesel.
any diesel engine can run on biodiesel with no changes made to it.
I have a green house and am involved in the production of green chilies and tomatoes. What i want to know is, would it help to increase my production of final product if I opt for tissue culture technique instead of sowing seeds in Green house.