Picked up a seized engine E70 (N55)

[ard]

Originally Posted by blue dragon

For the injectors, you need this kit

Fuel Injector Puller Removal and Installation Tool Kit

AGA has some cool tools...the video in that link is interesting.

Although give the engine is out and apart, there are probably cheaper methods that dont 'solve' the problem of limited access like that AGA item does. Basically anything that threads onto the end, and 2 minutes with a wirefeed welder and youve got it. Pry, lever or slide/slammer (ie old dent puller)


and LOL at 'the sludge is strong in this one'

[BergA]

Originally Posted by blue dragon

For the injectors, you need this kit

Fuel Injector Puller Removal and Installation Tool Kit

All due respect, but there is no way in hell I'm paying $295 to get these injectors out.

[Pierce330]

Originally Posted by BergA

All due respect, but there is no way in hell I'm paying $295 to get these injectors out.

Buy the kit, take out the injectors, and return it!

[London Lad]

https://youtu.be/XwZOTf8vYhE

[Joshdub]

Originally Posted by London Lad

https://youtu.be/XwZOTf8vYhE

I found those same guys working on a knee

[kakalika]

Watching this thread with interest

[lizmedina]

much wow.

[noelskii]

Haha! There are a few videos like that...hmmm

[BergA]

Tonight I finished disassembly and diagnosis with a friend. We started by removing the fuel injectors using a tool he made up out of a simple piece of 1"x5"x1/4" steel. He also created a custom nut, tapped with the same M12x1.5 thread the fuel injectors use. The injectors came out quickly and easily using this tool.

Removing the cylinder head was straightforward. BMW has designed it in such a way that the entire assembly can be kept together when removing the head. One bolt was obscured by the servomotor gear, but there is a 4mm hex keyhole that you can use to rotate the gear out of the way. Additionally you need to remove the oiler tube to fit your T60 tool into the space.

Once the oil pan came off, the fun began. I found a thin layer of sludge at the bottom of the oil pan, but not enough to cause the engine to die. The oil pump and oil baffle looked healthy.

I began by removing connecting rod bolts and pistons one at a time. The 6th connecting rod cap was stuck! Turns out, this engine spun a connecting rod. Once the 6th piston/rod assembly was removed, the engine turned over freely again.

The crank got really hot on that connecting rod and will need to be welded and ground. I'll need a new connecting rod, too. My next step is to tally up all the components I need and get an approximate price to repair this engine. I'll compare that with the cost of buying a used long block.

[Scott ZHP]

Most excellent. I like your friend's work. He should sell that puller as a kit, lol.

So the question is why did it spin a bearing? Is there crap/sludge in the drilling to that bearing journal? Oil starvation would be my guess.

Now if you'll excuse me, I'm going to change my oil, maybe even with a can of EPR/BG 109; those sludge pics give me the willies.