 hello everyone today we disassemble the engine and here is the engine in question for those who don't know this is the EJ25 the 2.5 flat 4 engine from the 06 STI which had excessive oil consumption and oil blow by found a good amount of oil in the intake manifold and inner cooler and also had low compression on all cylinders pretty much the lowest was 95 psi the highest was 120 which is no bueno here you can see I made a sterile area for all the engine parts I assure you I vacuumed it at least twice so whatever I take off first I'm gonna start putting it in order so so there's less confusion when I'm gonna be putting it back together always remember to take pictures before you take stuff off a little bit of play on the pilot bearing might as well just replay I may consider actually getting a lightweight slime wheel this is actually not that heavy but yeah we'll see this is clutch what is this mouse food difficult these bolts these bolts were coming off this one I did or this one one of these I did off-camera but it was equally difficult and I was successful with all but this one just by holding the the crankshaft pulley in place so the belt was actually holding the sprockets but this one actually gave me trouble and the sprocket was skipping on the belt so couldn't continue good thing I've noticed cuz at first I I thought it's actually the bolt is actually given in so I had to stop made some phone calls few hours went by and I got these tools actually borrowed these tools from a buddy of mine honestly thank you you know who you are here we go these are actually made by AMS this is for the exhaust sprocket or sprockets and this one is for the intake I don't need this one now but I'm gonna need it when I torque these down when I'm you know putting the engine back together so this goes there like that so we're gonna try and take this sucker out need another pipe this twisted a little bit if something's gonna give in it's gonna be this it's not actually it's slid inside here not good this sucks you give me no other choice what to do I could probably weld it well the tool to the bolt or maybe find a slightly bigger size and knock it in now if I were to weld it should I weld this one or this one which one's stronger if I weld this one and I do have to use this and this might snap if that's the case and I'm gonna be effed again if I will this one or this might snap and I'm gonna be effed again it's a 10 mil Allen this is 10 this is 10 that's the biggest that I've got I don't have an 11 or 10 and a half if it exists I got another 10 this one is actually this one says 10 mil Allen USA this one just says 10 mil which one you think is stronger so I filed this down to bare metal both ends also file the bolt on the outside okay plan B got a 36 mil nut here I believe this one is like a ball joint lower ball joint not for maybe a pickup truck or whatever doesn't matter clean the inside threads as best as I could and the outside here I plan to weld it obviously inside and come out and weld on the outside as well should I wait till it cools down on its own spray water on it so it hardens or go ahead and try loosening it now all these questions what to do what to do hmm maybe because I sprayed water on this tool it made it brittle and that's why it broke oh shit I thought I thought the weld started to come apart but it's the bolt yes yes you know it was the heat from the welding that got it loose and of course where's the socket so the 36 that you guys think I can reuse this let me know in the comments below tools tools tools