[W126 Coupe] Exhaust manifold bolts?

[dolans1 at verizon.net]

Mike,

pbblaster.com, the only lubricant! I used it to remove a spark plug from my 500 euro. The plug was almost welded, will do the trick for you. Spray on, let it sit over night, repeat, ect...

Regards,
Mike.



>From:  <dolans1 at verizon.net>
>Date: 2006/08/21 Mon PM 05:17:00 CDT
>To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>Subject: Re: [W126 Coupe] Exhaust manifold bolts?

>
>>From: "Mike R." <mramay at att.biz>
>>Date: 2006/08/21 Mon PM 05:17:00 CDT
>>To: 'Mercedes Coupes Mailing Lists' <mbcoupes at mbcoupes.com>
>>Subject: [W126 Coupe] Exhaust manifold bolts?
>
>>
>>I need to remove the exhaust manifold from my ’87 SECM117engine. The exhaust has been on there from day One and the nuts are verylikely rusted in place. With my air gun, I can get them out – correct sizedsocket (6-point) and set the gun to max torque, they’re coming out or I’lltwist the stud either out of the block or in two. I’d expect that woulddamage something. What worries me the most is a steel stud stuck in the aluminumhead and I pull the threads out of the head when the stud comes out. It wouldbe great to just get the nuts off the studs, but I’m not sure they’llwant to come loose. 
>> 
>>Any tricks to this so that I don’t have to re-tap the heads?Is there some Industrial Strength “liquid wrench” stuff that shouldbe used here?? Heat from a torch? Use the air gun (impact wrench) gently in andout to try to get the nut to thread off the stud??
>> 
>>Thanks,
>>Mike R.
>> 
>> 
>>
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