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Male WalkingWounded
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Joined: 07/16/04 01:03PM
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Question About TTR-90 Muffler Packing Reply to this Post

I just acquired a 04 TTR-90. Someone drilled several holes around the perimeter of the tail pipe. I took the insert out and welded all the holes. There is a blank spot on the insert that looks like packing could go, but it also looks like there is a way for sound waves to access that area. Does it require packing? I know it can run without it, but I like quite pit bikes.
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I think we risk becoming the best informed society that has ever died of ignorance.

http://houstonmotocross.com/theforum/viewthread?thread=33552&offset=0

http://houstonmotocross.com/theforum/viewthread?thread=44047

Monty 14 KTM250SX's 2017 KTM350SX-F #045 - A Lot Of Pit Bikes, And Added Another One
[09/03/18 12:10PM] Report threaten post: please login first  Go to top 
Male WalkingWounded
Money



Joined: 07/16/04 01:03PM
Posts: 15017
Status: Offline

Re: Question About TTR-90 Muffler Packing Reply to this Post

I ended up wrapping that blank section with some packing. Although there was no pass through for exhaust, there were 4 small holes entering that chamber. It's very quite, and really woke up the off idle response and grunt.
----------------------------------------
I think we risk becoming the best informed society that has ever died of ignorance.

http://houstonmotocross.com/theforum/viewthread?thread=33552&offset=0

http://houstonmotocross.com/theforum/viewthread?thread=44047

Monty 14 KTM250SX's 2017 KTM350SX-F #045 - A Lot Of Pit Bikes, And Added Another One
[09/03/18 08:12PM] Report threaten post: please login first  Go to top 
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