[Roadsters] Sun-visor/rear-view mirror screws

[Keith0alan at aol.com]

The problem with those is that the stud is steel. It rusts and fills the  
space between the stud and housing with rust. Since rust is bigger than the  
parent metal it is packed in really tight. I assume the top piece that the  cap 
screws onto is removed. Take a drill with a 1/16" bit and drill down between  
the stud and the aluminum housing. Work your way around each stud drilling out  
the rust. This will give the penetrant somewhere to go. After drilling out the 
 rust fill the area around the stud with your favorite rust buster. Let it 
sit  for a few days topping it off if necessary. You can also tap the studs 
sideways  a bit with a plastic hammer to break up the rust. Then heat the housing 
till the  penetrant just starts to bubble. (warning: it may flame on you) Then 
tap  the sides of the housing with a plastic hammer. This should break it 
loose. Once  it is apart I usually replace the studs with ones made from 
stainless steel. My  next choice would be to clean and paint them then squirt grease 
between the stud  and housing when put back together.
 
keith
 
 
In a message dated 7/29/2008 1:40:12 P.M. Pacific Daylight Time,  
vociferouschicanery at yahoo.com writes:

hi  everyone
i've been soaking (with liberal applications of PB Blaster) the  studs 
holding on the thermostat housing to my aluminum R16 head for over a  month.  and it 
still won't budge.  i've tried some manual persuasion  of the hammering 
variety, to no avail.  should i add a little  heat?
s
675MIZU






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