So I noticed a few Z engines have a bar on top that goes from left to right. What is and what is it for? I don't have it on mine and just wanted to know Forgive me but I'm a Z novice. I have this Z that I'm in the process of bringing it back to life. It's got 200K miles and I've slowly but surely dones small things to it. I'll post pics to show the gradual revival. Thanks