Finally got the lower guides out and noticed (besides lots of pieces of the chain) it looks like it ripped apart what I assume is where the dipstick tube went. I'm still trying to find a replacement online for that but the ones I've found look wrong. I think I can clean that up and as long as the dipstick tube I guess stays seated I don't think it's an issue but perhaps someone more familiar with this would know better?

Checked where it came out the bottom in the oil pan (pic) and it looks ok.

 

If you look in the illustrated parts list http://www.realoem.com/bmw/enUS/select you can get a part number and basic pic of your tube.

 

Yeah the one I see is a small short elbow tube, so maybe that metal piece in the picture that is blown out is not where the dipstick tube goes...? I figured it'd be a longer dipstick tube but all the part #s and diagrams point to the elbow piece.

Anyone know what that port is for? Having trouble finding it in a diagram or someone else's picture/video.

 

Okay finally found it in one of those diagrams there, thank you!

It is not labeled, however...

Anyone know what this for?

 

Maybe that port is where the dipstick still goes, does anyone know? Feel like it'd have to slide along the back of the timing guide to do that as it seems like a tight fit. I went ahead and ordered a new dipstick + tube, so I'm sure once I get it I should be able to figure it out but curious if anyone here knows off the top of their head what that port is for?

 

the dipstick does not have a separate tube. The stick slides within the guide rail into the metal "tube" of the lower half of the block as you showed in the picture. The stick is too long and will reach the oil pan... it wont effect the timing chain...HOWEVER, when you take it out, you have to wiggle it to find the hole, otherwise you might bend the stick.

I did a rebuild where the exh sprocket shewed the tube, just like yours...

 

That is great news MiniToBe! Thank you for confirming that and also the good news it's not going to mess with anything after a rebuild.

 

https://www.northamericanmotoring.co...tensioner.html

This is the early(2007) dipstick that is a coil metal dipstick, the newer version that is just a metal rod goes the same way.

 

Thank you for that, little late but better than never! (my thank you that is)

Finally got the new valves in and the head mostly back on and when going to put the vacuum pump noticed that it wouldn't turn to align on the camshaft.

Went ahead and ordered a replacement...but any one have any idea what would have caused one of those slides to catch and bend that sucker so bad?

It did lead to what may be the final piece to the puzzle (hopefully, lol)...that probably seized, caused the weak camshaft bolt to shear off into the timing chain and break that all to hell....it would have been a fun one to hear go.

 

the vac pump looks dry which means it didnt get oil. that is why low oil pressure can kill the engine. also, with intervals of 10k miles for oil changes, lots of parts will def ware out FASTER...

 

Yea that vacuum pump looks worn and lost oil or clogged.

 

Yeah, that metal piece bent something awful when it caught. Pretty sure I ordered the replacement from you guys