Crank pully broke off, left half broken bolt UPDATE,PICS!, FIXED! NEW QUESTION!
 

what now? pull engine and have a excuse to build? Anyone have a easy fix? or am I just stuck with pulling the engine and taking it apart? stock z6 engine btw...

Before you tell me how much of a moron I am and how could I do such a thing.. I just bought the car less than 3 months ago..

I was racing it 50 minutes previous, was casually driving home... All of a sudden the battery light blinks a few times then comes on.. I hear a small rattling instantly followed by a huge bang as I ran it over.. I tripped the hell out for a second but kept it going like a trooper.

let me know your thoughts. if your going to tell me how cool I am for driving without a care in the world after it happened.. I know ;)

Re: Crank pully broke off, left half broken bolt...
 

well in reality to get the crank pulley off your going to need to cut the puley of. Get a powerful welder to weld a new end to the crank. Crank will be junk after welding most likely but you still have the rest of the block



In reality your going to have to bring this to a machinst has I doubt you have a tig

Re: Crank pully broke off, left half broken bolt...
 

get a pic, I don undersatand wit you said the pully did.
is it fell off or u broke the bolyt off?

Re: Crank pully broke off, left half broken bolt...
 

im guessing the threaded part is still in the crank? there usually isnt any tension on the threads once the head of the bolt is broken loose... just twist it out....

Re: Crank pully broke off, left half broken bolt...
 

drill into it, thread a nwe bolt into hole the, welt bolt to bolt and undo

Re: Crank pully broke off, left half broken bolt...
 

Yes. I can feel the bolt in there as I can only insert about a half a inch of my finger into it. Dont have a welder as you guessed Chris. Think possibly I can drill/tap and undo it that way? Or is welding absolutely nessesary? Now that I think about it how far its in there I dont think weldings a option unless I want to warp something down there. I will take a pic tomorrow but its pretty much as described as quoted.

Re: Crank pully broke off, left half broken bolt...
 

No way a bolt like a crank pulley yu will be able to drill and use an easy out. Hell a 12mm bolt sometimes wont come out a 17mm crank pulley bolt is stuck for sure



Honestly your best bet is cut the pulley off with an angle grinder. Pull the crank out. Replace with another used crank

Re: Crank pully broke off, left half broken bolt...
 

just drill a little whole and use a ------- easyout

Re: Crank pully broke off, left half broken bolt...
 

i dont know about the easy out. the crank bolt is a bitch under normal conditions. you said you heard something wrong in the block right. i would get a new crank and jack the car up and drop the oil pan and go to work.

Re: Crank pully broke off, left half broken bolt...
 

trans has to come off to do a crank...not worth doing it in the car imho since youd be working upside down