[DML] Re: Rusty Exhaust Manifold Studs

["Stephen Card" <stephen@xxxxxxxxxxxxxxxxx>]

The po of my car ran then let the car with an exhaust leak on the 
drivers side. I am doing battle with the manifold now.  The last two 
studs over the engine mount did in fact break and were the cause of 
the leak. When I removed the manifold they were well rusted around, 
as well as between the two halves. Of course they broke just a 
little recessed of the face of the block.
Upon inspecting the face of the manifold the last port where the 
studs broke were not in line with the other two faces but recessed 
about 1/16". I suspect the extra tension on the manifold caused the 
studs to break. The face was also badly pitted. Needless to say I 
had the face of the manifold ground to bring the faces all in line 
and eliminate most of the pitting and hopefully the tension.
Stephen
Vin 3601

"Typically it is not the fastener that fails, the gasket blows 
out........ the longer you drive with an exhaust leak the more 
trouble you will have with the fasteners and you may have to have 
the exhaust manifold "planed" or ground flat so it will make good 
contact with the cylinder head."




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