i opened one up a few months ago when i got a replacement a friend had laying in his garage i cut the weld through at the cat along the seam of the black part and the stainless how much should i chop off the open end of the remainder and reattach ?
or maybe show some measurements where you did the actual cut and what part was removed
it looks like you removed the front part using the original end with can attached
geeeez, i replied, but must have DELETED it versus sending it... let's try again...
1st, i would NOT cut the next muffler from fwd to aft... 1st, drill out the rivets that hold the mounting strap to the muffler... then using a die-grinder with a 3" cut-off wheel, cut behind the fwd weld to a depth of no more than 1/8"... this will allow the casting that holds the 'cat' to maintain it's integrity... then i would measure from this cut back towards the aft end the amount you choose to removed overall. mine was 9", the next one i do, i will remove 12" out of it... what ever you decide to eliminate, measure that distance aft from the primary cut, now using a big chop saw, sever the muffler in half... then start removing everything between these 2 cuts. once this has been accomplished, you'll need to use your die-grinder again, and go inside the aft end and remove 1/2" of the liner which is inside of the outter casing... DO NOT CUT THE CASING AGAIN...
look at the picture with my hand in it, that will give you an idea... dependent on whether you leave in the cat or not, you will need to evacuate 'stuff'
ie; piping on the inside of the aft end... removal is up to you and what you think is necessary. some hand work will be needed to 'fit' the aft to fwd ends... once this is completed, you are ready to TIG weld the 2 pieces into 1... now go buy a spray can of BBQ GRILL paint at Walmarts... spray on 2 coats... NOTE: prior to cutting, mark the muffler with a marker to re-align the 2 halves after cutting. ALWAYS wear your safety equipment while working. good luck, enjoy... and let me know how you made out....
Dan P
Easley, SC
OH,,,,, now i c what happened... there's 2 pages... n i didn't check the 2nd page, duh... sorry...