Im doing some research on the 12a and 13b to gain some knowledge since I am studying to be a mechanic. Now my questions...

How do you put it on time? (like in a piston motor...when you time the cams and the pistons to work adjacently)

When you want to build a racing motor...what exactly do you change from the internals? Do you change the same things if you plan on doing a turbo setup?

And finally...How do you know where the redline is after you build it?

Im sorry for the noob questions but like I said Im trying to learn more about them. Thanks for the help...rep will be givin to those who can help me out.