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Hey guys,
I once again need your help with my 74 DT360. I'm very close to getting it registered, the only issue left is the exhaust noise. To me it seems like somebody removed whatever had been in the muffler originally and later replaced it with a steel pipe with a few holes and some insulation wool. With his setup, the bike is way too loud to be street legal here, so I'm wondering how the inside of that muffler looked originally. Maybe someone has some photos or a spare muffler laying around for some photos on the inside!
Highly appreciate your help as usual!
Ok ... the 1st one i opened did not have any sound dampening packing, but I noted that it had a piece with spiral shaped blades, that spin the exhaust gases outward ... towards the outer casing walls.
This piece was welded firmly in place at a depth of 126+mm (5 inches), and had a bullet shaped cone in the middle.
It appears to me that the previous owner had knocked this piece out of yours, and then installed the longer pipe with holes drilled in it.
The second one I opened up, had a real dense fiber type mat still in place. This mat absorbs sound energy.
SEE PHOTOS BELOW: