Well I was installing my asp pulley and i have the belt off but how do you remove the crank bolt? the crank turns as i try to loosen the bolt thanks

 

i had some trouble getting mine out at first.I had to change to a better socket on the impact wrench to break it loose and i left the belt on when doing it.I removed the belt after i had broke all the pullies loose
Here is some info on how others did it
https://www.crossfireforum.org/forum...nk+pulley+bolt

 

Impact wrench and don't use the old bolt. Get a new one

 

If you don't use an impact, you can use a 1/2" drive breaker bar (preferrably with a long pipe extension for added leverage). There's a special tool you can buy to brace the crank pulley to keep it from spinning (IIRC, they can be found on ebay or google search) - or you can have a friend crawl under the car and lock up the TC so enough pressure can be applied to break the crank bolt free.

As Jake mentioned, make sure you use a new crank bolt (they're one-time-use stretch bolts), and make sure you torque it to spec (150 ft/lbs, PLUS a 90 degree turn).

Good luck! Makes a big difference in the power output - you'll definitely feel it

 

Ok got it off used a 3/4 breaker bar and stuck a extension through one of the holes on the crank to keep it from turning. and it came off pretty easily. then i just reused the old bolt and put it back on at 150ftlbs with 1/8 turn extra with the breaker. drove it checked it then double and triple checked it seems good to me i'll check it again after my next oil change but i dont think its going to go anywhere. water pump pulley was little tricky also it kept wanting to turn as i loosen the bolts, I just pushed down as i pulled the other direction and broke them loose. Only took me 45 min with a 15min break trying to find somthing to jam in the crank pulley to keep it from turning.

 

.....use a new bolt. I can send you pics of damage on a reused bolt. Its only like a $10-20 cost to get a new one.

 

second that.....one time use.

 

Well i let mine cool down all the way broke loose way easier then i thought it would. rechecked it and it seems good no problems yet. I'll keep checking it after evey hard run but i dont think its going anywhere.

 

Your right, it won't be going anywhere. What happens is that the stretch bolt already being stretched moves a hair. This causes the crank pulley to spin out of balance and....YIKES. Think of it this way. When you get our tires done, they put small pieces to balance out the wheel under 1600 rpm. Now, a little out of balance on something that is spinning at 6000 rpm.....not good.

 

Yup cranked it up with the fan out and had my buddy rev it up to 3.5k to check for just that, wobble. Actually i had planned on getting another bolt but the local mecedes parts department was closed sat-sun.