A very useful person to bring is an engineer.
Their gnomish universal remote is useful for links.

It is worth noting that the NPC's in the clean zone are only friendly to the alliance.

Ok, well, i'm not sure if this is a glitch or if it set up this way, but I have found(for alliance) that if you're in the clean room and you pull something in there and stand by the priests while fighting they give you a stamina buff (Power Word: Fortitude) for 22extra stamina.

Hope this helps!

(I don't think it works for horde if anyone wants/can test it)

It's here in Dun'Morogh : https://vanillawowdb.com/?maps=1:247398 https://vanillawowdb.com/?maps=1:247398

Here's a question for you all:
Anyone knows what script I have to use to listen to the Gnomeregan theme anywhere I want? I really love it and I don't wanna go all the way to Gnomeregan to hear it.

Something really funny to do in this instance is to enter by the workshop and stealth to the last boss (if you can), or just kill the least mobs possible if you're a class who can't stealth. Then you aggro one guy in the tunnel near the boss and run back to the beginning of the instance, and you're gonna have a legion of guys coming behind you a few moments later... perfect if u wanna power level some1 or just have fun lol. I did it with fan of knives on my rogue.

Gnomeregan has a few static rare zone-drops. This is a list of all of them. (in no special order)

https://vanillawowdb.com/?item=9490 Gizmotron Megachopper
https://vanillawowdb.com/?item=9488 Oscillating Power Hammer
https://vanillawowdb.com/?item=9486 Supercharger Battle Axe
https://vanillawowdb.com/?item=9487 Hi-tech Supergun
https://vanillawowdb.com/?item=9510 Caverndeep Trudgers
https://vanillawowdb.com/?item=9485 Vibroblade
https://vanillawowdb.com/?item=9509 Petrolspill Leggings
https://vanillawowdb.com/?item=9491 Hotshot Pilot's Gloves
https://vanillawowdb.com/?item=9508 Mechbuilder's Overalls

All of these items are rare and have a small chance of dropping from any mob in Gnomeregan.

You can enter Gnomeregan as a horde easily by taking the quest "Chief Engineer Scooty" from Orgrimmar, then fly to Ratchet -> take the ship to Booty Bay -> complete quest -> wait a second -> jump to the teleport machine. QUEST REMOVED.

Post cataclysm the entrance to Gnomeregan is guarded by lvl 90's. Found if you dive bomb in on your flying mount the guards lose interest quick and leave you alone, to go down the elevator.

There is a teleporter now from Grom'gol. Go ahead and go to the Grom'gol Base Camp in Stranglethorn and it's west inside the fence. Very helpful for running lowbies through. Takes you directly to the Clockwerk Run, and you avoid all guards.

As a member of the horde, its definitely easier using the teleport from Grom'gol Base Camp.
Even tho a lot of people, myself included, like to do things the fun way.
But I can tell you from experience that trying to get there manually is almost impossible without a death or two.

Im a rogue and the first thing I did when I got there was land on the mountain next to the entrance and go into stealth.
Right at the entrance there are four level 90 elites with 265k health and truesight.
There are also two level 85 elite pats with 1937k health that walk around New Tinkertown and make their way up to the entrance of the instance.
These guards do not have truesight.
For those of you who dont know what truesight is, it allows them to see through stealth and this is indicated by the "eye" you see above their head while stealthed. Just because they have their back turned doesnt mean they cant see you. LoS doesnt matter with these guards and their truesight actually attracts them to you.
As far as distracting goes, unless you have it glyphed, you cant do it.
If you dont have it glyphed, as soon as you get in range of being able to distract all four of the guards to make them turn around, the one closest to you will see you and shoot you,
If you have it glyphed, you can make them turn around safely but most of the time you will see "miss" on one of them.
Even on the times you successfully distract them all, their truesight attracts them to you so you wont make it.
Bottom line, you cannot stealth into the entrance.

I also tried flying directly into the entrance which resulted in my demise.

All in all, there are only two ways to get into Gnomeregan now,
Flying in the entrance then rez'ing inside and teleporting from Grom'gol.

Hope this helps.

For veteran Horde engineers interested in getting the https://vanillawowdb.com/?item=11828">(Item #11828) and https://vanillawowdb.com/?item=11827">(Item #11827) , who missed the dungeon while leveling, visit https://vanillawowdb.com/?npc=7853">(NPC #7853) at the Grom'Gol base came to teleport in. If you're Alliance, well, adapt this guide as needed.

At the entrance to the Hall of Gears, grab the parachute from the chest and jump down to the lower level using the chute. Take the western exit, and follow it down to the Launch Bay. On the upper level and lower level there should be a total of four https://vanillawowdb.com/?npc=6230">(NPC #6230) s. Kill the two on the upper level first, and then jump down, using the pillars and room edges, to kill the two on the lower level. One of the https://vanillawowdb.com/?npc=6230">(NPC #6230) s on the lower level may be in the SE hallway towards the Engineering Labs. If it helps, the https://vanillawowdb.com/?item=11827">(Item #11827) drops from mechanicals that LOOK just like https://vanillawowdb.com/?item=11826">(Item #11826) .

After killing these four, take the south hall way out of the Launch Bay towards the Tinker's Court. The number of https://vanillawowdb.com/?npc=6232">(NPC #6232) s varies in this hallway. They can spawn on the upper left-hand ramp and the lower center ramp; I've seen between four and six https://vanillawowdb.com/?npc=6232">(NPC #6232) s when I did this. I suggest taking the upper left-hand ramp until you reach the the small hallway that leads to the Engineering Labs. Then double back and move down the center ramp center ramp and work your way towards the Tinker's Court. Again, you only need to worry about groups that have https://vanillawowdb.com/?npc=6232">(NPC #6232) s in them. Skip any that don't.

Once you reach the Tinker's Court, kill https://vanillawowdb.com/?npc=7800">(NPC #7800) , who frequently drops https://vanillawowdb.com/?item=11828">(Item #11828) . If you already have the recipe, don't bother with this final boss.

Then, from the entrance of the Tinker's Court, run back up the (now) upper right-hand ramp back towards hallway towards the Launch Bay and the small hallway that leads to the Engineering Labs, killing the remaining https://vanillawowdb.com/?npc=6232">(NPC #6232) s as you go. Before reaching the Launch Bay take the small path towards the Engineering Labs.

Once in the labs, take the elevator to the upper level located on the NE corner. On the upper level of the Engineering Labs, follow the walkway to the right until you reach the boss, the https://vanillawowdb.com/?npc=6229">(NPC #6229) . Although he has a smaller chance of dropping https://vanillawowdb.com/?item=11827">(Item #11827) , it turns out that it's easier to go through the Engineering Labs to exit the instance anyway, so you might as well.

After killing the https://vanillawowdb.com/?npc=6229">(NPC #6229) , exit the Engineering Lab using the NE hallway on the second level, and follow it until you reach the instance exit. If you did not get your recipes, reset the instance and repeat. It should only take you two or three runs to get both schematics.

Enjoy!

Edit: Correction Below

Alright, I have been through this dungeon enough now on alts to know just how annoying it can be if youre partying with a bunch of noobs (no offense, noobs) or if you are a noob. As such, I just wanted to go over a couple of things to make your lives a little easier and relieve some stress. These are very important points that anyone going into this dungeon should be aware of. (Please note, none of this information has to do with fighting bosses.)

If its your first time entering Gnomeregan, youll receive a quest in the beginning (The G-Team), for which youll be given a parachute. If you have already completed this quest though, you wont be given a parachute and will have to retrieve it yourself. Dont worry! Its not far. Please be advised: Everyone should take a parachute to navigate this dungeon effectively!

To get a parachute, look for a box not far from where you first arrive at the dungeon. Its out on the ledge overlooking the area you need to jump down. (Heres a screenshot of it: https://vanillawowdb.com/?zone=721/gnomeregan#screenshots:id=253302 https://vanillawowdb.com/?zone=721/gnomeregan#screenshots:id=253302 ) If your team doesnt approach the box to get parachutes of their own, its not a bad idea to ask and make sure everyone has one.

Next, jump down and try landing on the big gear sticking out of the floor, since youll be safe from any aggro up there. This is where things get irritating.

Around the time you and your team approach the Vicious Fallout water elemental, you might find yourselves caught unawares and being attacked by what seems to be an army of Caverndeep Ambushers, mobs that spawn frequently in the first part of the instance and which run around together at a fast pace. They arent elites, and they can be taken downif people work together. Normally though, this is when people start freaking out at attacking one another, asking who pulled and who aggroed everything.

Listen up its no ones fault. No one got aggro, and no one pulled them to you. They spawned and came out of nowhere; thats why they call them Ambushers. Stop wasting valuable time arguing about whos fault it is, when clearly its no ones, and start working as a team to take them out. Get some crowd control. Use some AOEs. They can be killed, so long as people realize this is a normal occurrence and is meant to take you off guard. (Hunters: Be aware! Ive seen many hunters get blamed, including myself on my Hunter toon, for their pets aggroing this mob. You can try arguing that your pet isnt to blame, but normally its not worth it. Just hope that you dont get kicked for something that isnt your fault!)

Finally, in regards to parachutes once you use yours at the beginning of the dungeon, youll find it is no longer in your inventory. Once you defeat the Electricutionar 6000 (the crazy green guy in a spider machine), theres another box on the ground with parachutes in it right where you were fighting the boss. Everyone should loot this box to pick up another parachute so you can jump off the ledge there safely.

Its these simple things that make a world of difference, and I hope that by reading this it may help some people out there. Play smart, play safe, and work together as a team.

Tbh, I think this dungeon has some of the coolest loot for it's level. There's a lot of weapons with a proc and some useable effects too. Examples:

https://vanillawowdb.com/?item=9485">(Item #9485)
https://vanillawowdb.com/?item=9486">(Item #9486)
https://vanillawowdb.com/?item=9458">(Item #9458)
https://vanillawowdb.com/?item=9449">(Item #9449) (The on-use for this one takes you over 160% haste at level 24 or 100% at level 34, which is freaking amazing, even if it is on an hour long cooldown)
https://vanillawowdb.com/?item=9492">(Item #9492)
https://vanillawowdb.com/?item=9446">(Item #9446)
https://vanillawowdb.com/?item=9453">(Item #9453)
https://vanillawowdb.com/?item=9452">(Item #9452) (Sometimes useful even at level cap)

I've got a level 85 Engineer who needs a couple of patterns dropped by Mechingeer Thermaplugg, namely the https://vanillawowdb.com/?item=6672 Flash Bomb , https://vanillawowdb.com/?item=4413 Discombobulator Ray , and https://vanillawowdb.com/?item=4411 Flame Deflector . In my farming, I've figured out that I can get to Thermaplugg, kill him and get out of the instance in about 5 minutes.

Basically, what you do is enter the instance, run straight ahead and pick up the parachute from the chest overlooking the drop off. Jump, then click on the parachute and slowly fall down. Run out the western door. I usually run down the left side of the next tunnel which is a little higher than the right side. I find that if I can stay right on the slightly raised ridge, I can avoid aggro on both the mobs on the left and the mobs on the right.

I run down the ridge to the next big drop off. Right as you exit the tunnel, there's a column in front of you and slightly to the left. If you run off the ledge there, you'll land on a little structure. From there, turn left and run off the structure onto the lip that runs around the outskirts of the room. Hop off the lip and duck down into the second exit on the left. You'll know it's the correct one because of the Dark Iron Agent sitting right by the door.

I do essentially the same thing in this tunnel as in the first one - run down the left side but on the slightly raised ridge that separates the left from the middle. About half the time I aggro everything past the little tunnel on the left just so I can kill everything at the same time that I kill Thermaplugg - other times, I skip try to avoid aggro. It doesn't seem to matter much - I almost always aggro something on the way back up the tunnel anyway.

After Thermaplugg's dead, head back up the tunnel and take the workshop tunnel (which is now on your right). Run through the workshop and hop on the elevator. If you've managed to acquire aggro, jumping on the elevator will fix it. Ride up to the top, run down the hallway and open the door. You can avoid aggroing the first pack past the door, but you'll aggro the other packs. Just run through. The exit is close and they don't hit hard enough to worry about.

Jump through the exit, reset all your instances and start again.