Looking for tips on how to remove the remains of broken aluminum bolt without removing the engine lol
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2008 328Xi BMW engine bolt broken. Tips for extracting the remains.
- Thread starter mikeinfwa
- Start date
Can't tell. But if you can get a right angle drill in there. A Left Hand drill bit and extractor. Tap the extractor into the hole to get it to bite. Tap, not pound.
Yes, designed to break and allow the engine to drop and slide under car instead of crushing the occupants in front seats in head on collision.
4 bolts total.
This one was damaged when I drove over a pothole.
Its a known issue with BMW
4 bolts total.
This one was damaged when I drove over a pothole.
Its a known issue with BMW
Aluminum bolt, intake manifold??? Is there a gas leak on here? Engine Mount next to the oil pan it looks like. Put the craddle.on the support the engine and loosen the other bolts that mount it to the block. Try the left handed bit. If that doesn't work I would get the mount out of there and try to weld a nut to it. If that doesn't work you're gonna have to center punch it and drill it. Don't break an extraction tool.off in it. What ever you do. Take your time to get it centered. Don't drill too deep.
Right angle drill. Left hand drill bit. Center punch it before you start drilling. Hope for the best
Looks like it isn’t broken flush with the block so you should be able to get some vice grips on it. Support the engine either from above or below. Remove the engine mount arm to get the best access. Apply heat if it doesn’t come loose right away
Just take a pick, or a narrow sharp pointed object and twist the broken part out. These aluminum bolts do break. The good part is its easy to get them out.
I think The D has it right. I've done one or two (Mercedes and BMW) where the owner rode around on collapsed engine mounts until the vibration broke the bolts. If there's enough to grab, they usually spin right out. If it's recessed a little, you may be able to get a pick in there and start it moving. Any way you do it, taking the mount arm off will give you more room and less cursing.
Way to much work -
Option 1- raise the lift to highest position and push it off. Gotta post pictures!
Option 2 - trade it in.
Hoping to see pics in the near future.
Option 1- raise the lift to highest position and push it off. Gotta post pictures!
Option 2 - trade it in.
Hoping to see pics in the near future.
This is exactly my wheelhouse(mostly Merc for ~13yrs). If you can get it to turn using an angle drill and left hand bit and extractor great, do that. Anything more than that you need to take the mount and arm off to get as much room to work as possible. Don’t forget to disconnect the battery if the alternator is right there
Get the next size larger bolt cut length to just protrude from hole.
Machine the OD of the bolt so that it fits the clearance hole.
Drill through the center of the bolt leaving maybe a 2mm wall.
Stick in hole, weld with mig (aluminum) welder, remove bolt.
Machine the OD of the bolt so that it fits the clearance hole.
Drill through the center of the bolt leaving maybe a 2mm wall.
Stick in hole, weld with mig (aluminum) welder, remove bolt.
Welcome the das Deutschland engineering. Single use, stretch-to-torque (German Goot'n'tight specs) aluminum fasteners to go in the magnesium block of that Bavarian straight 6.
