1. Do I need to disconnect anything? (battery? any other hose? wires?)
Battery cables. Throttle, TV, and Cruise control too.
2. What kind of scrape I should use to remove the existing gasket? Plastic or Metal?
Unless someone used RTV you wont need any kind of scraper. Use a rag and paint thinner/brake clean and wipe down the gasket surface on the head. If you feel its not clean enough grab some scotch-brite to clean your surfaces.
3. Do I need silicone all over the contact surface between the cover and the gasket?
No, unless either surface has been gouged by scraping you dont need to use any type of sealer. The fel-pro part is the mopar part (the're Mopars gasket supplier for OEM). When you pull it out of the box note the mopar P/N stamnped into the metal cross bar in the front. This faces up and forward.
4. Can I reuse cylinder head bolts?
Im assuming you mean the valve cover bolts so yes. You can reuse them. (for the future you shouldnt reuse the cylinder head bolts.)
5. Do I need to extremely careful when I tighten up the bolts, do they have to be exactly tightened to a specific degree?
Yes 85 in-lbs (INCHES!), if you dont have an inch pound torque wrench then go out and buy 1/4" one. Itll come in handy in many places where a 3/8 one is simply too big. If you can find a 1/4 drive it makes for a much easier time when it comes to torqueing the rear bolts. Youll also find a deep socket and 3" extension both in 1/4 drive handy here.
Any suggestions? and experience?
Torque from the center out in a criss-cross pattern or circular clockwise pattern keeping it even all the way out to the edges. I did mine in two stages first at 40, then up to 85. After a few heating/cooling cycles of the engine recheck your torque. While youre doing this job go ahead and replace the CCV valves and grommets. Trust me, do it now and you wont be doing this job again later. Also, on a piece of paper draw a crude diagram of the cover and mark where all the different bolts go along with which locations have studs and the location of the ground strap stud. Didnt draw one and you already took it all apart? No biggie, I have a crude diagram for reference. Message me if you need it. Heres a good write up with P/N for all the CCV parts. http://www.jeepforum.com/forum/f310/...ite-up-733669/