I have no spark getting to my motor.. i have checked the plugs and sprk plugs and got nothing. Also I think a main bearning is broken in my car because there is a loud clanking/ knocking noise in my motor I do have a old motor but its blow as well should I just get a whole new motor or should I take parts of the other motor and see if I can make it work also do you think i would need a new wire harness since im not getting spark?

 

I'm not totally sure what you're trying to do or have already done as far as the engine goes, but a clanking/knocking could be a lot of things. Your engine could be toast or it could be something else.

But if you have no spark [on a new motor] I'm not sure how you came to that conclusion?

The no spark could be a lot of things also.
First off check and see if the ECU sees the engine cranking [start by checking for fuel at the fuel line]. If it doesn't you need to look at your crank and/or cam sensors.
If it does see if your getting power at the coil packs.