EsCo Posted April 6, 2004 Report Share Posted April 6, 2004 Im removing my old exhaust from after the CAT. When unbolting the pipe for the back end of the CAT, is there a gasket there that will need to be replaced at all? Also, can I just bolt the new pipe right up, or will I need to fill the seams at all?? Thanks. -§teve Quote Link to comment Share on other sites More sharing options...
gp90se Posted April 6, 2004 Report Share Posted April 6, 2004 Im not sure what car/engine you have, but the 3.1 grand prix dont have any gaskets after the downpipe, its all welded. -Jeff Quote Link to comment Share on other sites More sharing options...
EsCo Posted April 7, 2004 Author Report Share Posted April 7, 2004 The car in question is a '94 3.1 Lumina. If the pipe is just bolted to the CAT, I can handle that, but if it is also welded what do I do to break the seal? -§teve Quote Link to comment Share on other sites More sharing options...
mihela816 Posted April 7, 2004 Report Share Posted April 7, 2004 Sawz-all Quote Link to comment Share on other sites More sharing options...
god910 Posted April 7, 2004 Report Share Posted April 7, 2004 The whole thing is welded, no bolts. Unless it's been replaced, it's just welded. Quote Link to comment Share on other sites More sharing options...
regalized Posted April 11, 2004 Report Share Posted April 11, 2004 no gaskets or bolts, if you cut off the cat your muffler will sound like shit, my buddy has a 94 catless lumina, trust me on this one...Regalized Quote Link to comment Share on other sites More sharing options...
TSabr88 Posted April 11, 2004 Report Share Posted April 11, 2004 my friend has a 3.1 in a 91 Sunbird with no cat. the stock muffler sounded good till he put on a glasspack! Quote Link to comment Share on other sites More sharing options...
god910 Posted April 12, 2004 Report Share Posted April 12, 2004 I've got a Cutty w/ a 3.1 no cat and stock muffler, it sounds good. I have a TGP w/ stock muff's and no cat, and it sounds better. I've got a more different 5 speed TGP that has no mufflers, no kat, and it sounds BEST. Quote Link to comment Share on other sites More sharing options...
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