Alex Rodriguez wrote:
> In article >, says...
>
>
>>The bolts between converter and center pipe (Pipe B) are actually
>>separate, and are called "converter bolts". On my 94 Civic these are
>>specialty bolts (not cheap, same for the 88 Accord) that have a thin,
>>flat head and "ridged" spine designed to grip in the holes in the
>>converter and help prevent the bolt from turning as you apply the nut.
>>
>>I tried to get mine out but found that the rust was more than I could
>>handle with my equipment. Mechanic charged me $75 to do it. Maybe try
>>heat and hammering them out with a punch from the Pipe B side? Just be
>>careful not to pound so hard that you damage either the cat or Pipe A,
>>both of which cost a lot. Might be better to drill them out.
>
>
> Thanks for the tip. I tried pounding on the bolts with a hammer, not a big
> one, and they bolts would not budge. I tried drilling them out, but my drill
> bits were not up to the task. I'm going to buy a couple of decent bits before
> I try again this weekend. Since I am going to drill them out, I'm not going to
> bother with the special bolts.
> ----------------
> Alex
>
>
ordinary bolts will soften & creep at high temperature. and the exit of
the cat is /very/ high temperature!