I Blew Up My Engine with Nitrous, Here Is The Damage

have you ever wondered what happens when you send a hundred shot of nitrous through a 2-liter turbo engine that wasn't built for it well it's this [Music] after blowing up the jetta with what was a ridiculous amount of nitrous it's time to push it back to the shop get it up in the air and see what kind of damage we're looking at first up we're gonna drain the engine oil and pull the oil pan and at the bottom of the oil pan we have a ton of debris this gives us access to our balance shaft module which is also completely destroyed this balance shaft module not only has balance shafts but it also has our oil pump in it it's so crazy how much carnage we have at the bottom of this engine so that balance shaft and the connecting rod all terrible damage but i want to get the cylinder head off so we can get a little bit better look from the top down luckily this setup is pretty easy to remove well there's no there's no metal blasted through the top side that's good we got to get this high pressure fuel pump off and uh and our nitrous line here this was a freshly rebuilt high pressure fuel pump too so hopefully we can salvage this guy there we go and get our manifold out of the way almost come off there you go now what's cool about this engine is we can actually get the timing belt off without taking off this engine mount right here it's not ideal and like if you're putting a timing belt on it it doesn't matter you have to take the mount off anyway but this makes de-tensioning and removing the belt super easy so once tension's off we can just pull our belt off and it doesn't matter where the belt is because uh well this one's not going back on anyway we do need to get a couple of screws out for the lower cover though there's one back here and one up here in the front check it out this is the cover that goes over the passenger side axle the block is still attached to it the sealant is still on the block but this chunk of the block was just hanging out pretty wild look at that this now we can undo our head bolts which it just so happened to work out that our cams were uh we're kind of in the right place to access our bolts so that's cool and we don't have to take that cam girdle off nothing like pulling apart an engine that all together had maybe an hour of run time on it okay everything's loose now it's time to get the cylinder head out of the way and see just how bad this damage really is all right let's get a better look at this at this engine block oh man oh man chunks i'm pretty sure that right down there is part of the piston the rest of the piston i should say it looks like the other cylinders are actually okay there's a little bit of metal in cylinder four a little bit in three two two well i think we know what happened at two and a little bit in one i mean i definitely wouldn't want to have that metal in there at all but it's not horrible oh there's sharp pieces in there well here is the rest of cylinder two piston boy oh boy did that thing come apart you actually kind of made it together there's still pretty big chunk missing there's also a lot of connecting rod missing now we can at least rotate our engine around i don't know if i'm gonna even be able to get connecting rod number two out all right so we still have some more stuff we gotta get out of the way or we can get all of our connecting rods out bits of our balance shaft module bits of completely crooked bolt chunks of chunks hanging off of other chunks another curved bolt for those hard to reach places next let's go ahead and take off our connecting rod end caps so that we can remove our pistons cylinder 1 cylinder 3 and cylinder 4 all came out no problem i was able to get the proper tooling on it to take the caps off and the bearings look pretty decent now for that floppity end or our cylinder two connecting rod i ended up having to cut it off there we go hopefully oh all right well that was worse than i expected but here we go here's our thing and of course we have to take a look at our remaining intact pistons they actually look pretty good except for this one piece of embedded metal and shockingly the bearings look pretty good too it's crazy how there's this trail of destruction right at cylinder number two after that piston came apart clearly it punched a hole in the front of the block and the oil pan as well as the back of the block and of course completely obliterated that balance shaft module i've seen numerous engines with holes in the block where the connecting rod broke and came out of the engine however i've never seen one punch through the front and the back moving on to our cylinder head and it's about the damage that we would expect to see cylinder 2 is the one that suffered the majority of the damage you can see our spark plug is just absolutely destroyed all around the edge looks like got beat up pretty good with some metal now whether the valves are bent or not i'm not really sure i just left the camshaft in because there was no point in taking it out it kind of stinks because we just put all this work into the cylinder head however a new cylinder head is in order you might be able to fix that damage or even run it as is however it's just not worth running the risk well here is our catastrophic damage so all this pile of parts over here this is mostly balance shaft module i mean you can see just how destroyed these parts are so my assumption is what happened is that cylinder two connecting rod let go that's what destroyed all of this that obviously is what got sent through the block these are kind of the only truly identifiable pieces there's a couple pieces of piston floating around here that might be connecting rod it's probably not a jigsaw puzzle worth putting back together but check out what happens some bent bolts this is always really really neat now the reason that i think this failed beyond like shoving way more nitrous way more nitrous into an engine then you should especially with stock internals is that the connecting rods are actually the weak point so if we look really carefully you can actually see inside of here these connecting rods are hollow so all that stress that downward stress just said you see it bent it like this and then sent it out the block oddly enough though um i mean you know not that i'd reuse any of this stuff but the rest of the engine minus this nonsense is pretty decent so we must have just been at the right place at the wrong time for cylinder two and she said kablooey a new engine is in order that hole in the block is amazing it's pretty much the trail of where our connecting rod for cylinder two goes through we have chunks of block more engine stuff luckily there's not too much metal that got pushed through the rest of the system because it all just puked out of the bottom we'll need a new turbo oil return line you can see it hit it so hard it just completely collapsed this line lesson learned don't go full send with a hundred shot of nitrous without forged internals on your bpy otherwise this is what will happen my next plan for the jetta is to actually get the nitrous to work without blowing up the engine i mean it technically did work so what i'm gonna do is i'm probably gonna spend a little bit more money on getting the nitrous to function properly this means getting a progressive nitrous controller probably a nitrous purge kit and maybe a couple of other little things that way we can smoothly deliver our nitrous rather than just injecting it like a bomb all at one time after we get it working properly we'll probably take it back to the dyno and make sure there's no more tweaks or anything like that that we can do to make sure that it's functioning properly then in a perfect world anyway we take that jetta back to the drag strip and see what it'll run we have so much time and energy and effort into this car i really really want to see what it'll do on the drag strip and we also have a backup engine just in case we blow up another bpy and after that most likely this car will be for sale with that i'm out have an awesome day and i'll talk to you again next time look at just how awesome this is i need to make a trophy out of this

Channel: HumbleMechanic

Views: 40,654

Rating: 4.9678941 out of 5

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Id: eh6RnGUHBZE

Length: 8min 17sec (497 seconds)

Published: Sun Aug 22 2021