Never fails, there’s always one...
 

So I popped the cam covers on the new engine to get ready for cam timing and cam cover refinish. As expected removing the cam cover bolts was tricky, I got all but one out. Had to drill out that one bolt head because it stripped. After removing the cover these bolts usually unscrew with just a vicegrip. Not this one! It does not want to budge. It’s also in a tricky spot. I have to be careful not to marr the cam journal. Already put some penetrating oil on it. Going to heat it tomorrow.

Any other suggestions from the collective wisdom?
H

http://a68.tinypic.com/x22vxv.jpg

Re: Never fails, there’s always one...
 

Have you tyred hitting it with a hammer this sometimes helps
Regards Glen

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Re: Never fails, there’s always one...
 

When I have cap or torques type bolts and they don't want to come undone I get a punch nominal a short tapper punch and hit the inside of the hex and this can loosen the bolt l use a 3 lbs hammer
Glen

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Re: Never fails, there’s always one...
 

Good suggestions Glen. I couldn’t use a chisel on it because of the location. So I had to drill it. It’s the one in the center notch at the front of the cam cover immediately behind the chain hump on the cover.
H

Re: Never fails, there’s always one...
 

I think drilling it was the way I would have done it once stripped let me know how you get on with it

Glen

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Re: Never fails, there’s always one...
 

Hans,

Have u tried Kroil?

Re: Never fails, there’s always one...
 

I used to use a product by the name of "Mouse Milk" to get studs out of aluminum aircraft engine parts. It's not cheap, but I suppose you have to milk a lot of mice to get a bottle full!
I got it from a company by the name of Worldwide Filter in San Leandro, CA.
Don't know if it is still available, but it was good stuff.

Re: Never fails, there’s always one...
 

Get a chuck type stud extractor and turn it out with an impact wrench.

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Re: Never fails, there’s always one...
 

Take a piece of metal sheet stock drill a hole the diameter of the bolt. Place it over the broken stud. Your going to use this sheet stock as a heat deflector for the area your working. Bend the sheet stock accordingly. Apply your heat wrench to the broken stud. Remove heat, apply visegrip on shank of stud while tapping with small hammer on stud. Remove broken stud.

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Re: Never fails, there’s always one...
 

Lots of potential solutions Hans.. all good ideas.. this is how I break these obnoxious ones loose..

First, get some freeze spray (usually available at an electronics store). You can also use a small bottle of NO2! Make sure you've got a nozzle you can control.. get a propane torch and gently heat the area immediately surrounding the bolt. Doesn't take too much! Direct your freeze spray on the exposed shaft of the stuck bolt. Only takes 3-4 seconds to chill and shrink the bolt. Get your vice grips on the bolt and remove it..

Good luck!

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