Re: Front End Noise - any ideas - Saab 9000 Bulletin Board - Saabnet.com
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Re: Front End Noise - any ideas
Posted by RayF (more from RayF) on Sat, 20 Sep 2014 04:59:58
In Reply to: Front End Noise - any ideas, 2 Saabs [Profile/Gallery]
, Fri, 19 Sep 2014 11:45:17
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How straight and solid is your exhaust?
On my car there's a bracket from back of block down to the top of the cat, to help support it. It developed a jagged crack between the bolt holes at the block, came free, and would rattle annoyingly.
Bolt to bracket on cat is M10 I think, 17mm I think, reached with a LONG extension from above, down behind throttle body. With a bright light you can see it clearly. I set up a MAPP gas torch and thoroughly heated mine from below, till it glowed, before loosening. Two bolts to block are M8 I think, 12mm heads I seem to recall tho maybe 13.
A Saab guy told me it's not necessary and Saab eliminated it at some point because the welded-on bracket sometimes tore out of the cat.
posted by 71.173.75...
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