1990 canadian; ca smog legal?

[Jeff Khoury]

#ygrps-yiv-715985715 p {margin:0;}A little more information on the KLR muffler design, as observed while I was hacking on mine. The KLR muffler is a two-chambered design.  I have no idea what is in the first chamber, as I have not cut one completely open.  When tweety is removed using the hole saw method, you can see into the second chamber. Tweety: Tweety is simply two tubes, one inside the other.  The inner tube is perforated, the outer is not.  There is packing in between the tubes and it is crimped together at both ends. Second chamber: The second chamber is similar in design.  The outer shell of the muffler is coated in packing, and a perforated sheet metal tube keeps it in place.  Tweety slides about 6 inches into this chamber, leaving several inches of hollow void between the inlet and the outlet. Inlet / Spark arrestor. Peering in to the muffler after you've removed tweety, you can see the spark arrestor.  It is a "cone type" not a "screen type".  It essentially looks like the bottom of a soda can with "fan blade" type fins radiating out from the edges.  This completely covers the inlet to the second chamber.  A neat side-effect of this mod is visual.  My brother was following me one night on a road trip.  At freeway speeds, he said he could see the spark arrestor glowing red inside the muffler.  cool, huh? The inner baffle of the second chamber is almost exactly 2" in diameter.  Cutting the  hole any larger than this is useless, as you would be unable to get the exit pipe in place, and you may chew up the inner perforated liner when the hole saw breaks through.  2" is definitely MAXIMUM. -Jeff Khoury

----- Original Message ----- From: "Jeff Khoury" To: "revmaaatin" Cc: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Wednesday, December 30, 2009 10:03:22 AM GMT -08:00 US/Canada Pacific Subject: Re: [DSN_KLR650] Re: i need help pls - Muffler Mod Instructions with Photos   Here is what the bike sounds like with the described muffler mod.  I am attaching it, but just in case it gets stripped, here is a clickable link: http://www.astatic.net/files/MufflerAudio.mp3 -Jeff Khoury ----- Original Message ----- From: "revmaaatin" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Wednesday, December 30, 2009 9:59:47 AM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Re: i need help pls - Muffler Mod Instructions with Photos   --- In DSN_KLR650%40yahoogroups.com, Jeff Khoury wrote: > > I will take a short video and post it this weekend. It's a "little" louder than stock, but a much deeper tone, about as loud as a STOCK harley. If you're in 3rd or 4th at 4000 rpm or so, it sounds like a Ducati. > > -Jeff Khoury > Oh, the noise issue. grimice. I hope it is a pleasant tone. grin. Last Sept I was riding with thermo-bob Watson, and asked him to verify what I thought was a lean-surge condition above 60mph =4500+rpm. He suggested removing the aircleaner door to see if that helped. It did. but the noise. ugh. No surge, but what a horrible flatulent noise the KLR makes with the air cleaner door removed. ugh. Ugh. I have not reistalled the door yet, but it is going to be. The cure was more annoying than than the problem. at least at this time. revmaaatin.

[Jeff Khoury]

#ygrps-yiv-1948976140 p {margin:0;}I took mine off, but I kept it just in case. I would have left it on, but it was directly blocking access to the rear suspension preload adjustment.  I make adjustments to it all the time depending on how I'm riding, passenger weight, etc.  That thing being in the way was a dealbreaker. -Jeff Khoury

----- Original Message ----- From: "Monty" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Wednesday, December 30, 2009 12:45:34 PM GMT -08:00 US/Canada Pacific Subject: [DSN_KLR650] Re: 1990 Canadian; CA smog legal?     Or if the owner in CA took the darn stuff off....   Keeping it just in case.  Might be needed some day for reg.? Posted by: "Harry Seifert" Tue Dec 29, 2009 8:51 pm (PST) Should be legal in CA if it has more than 7500 miles on it. On Dec 26, 2009, at 10:57 AM, Jeff Khoury wrote: > > > eh? > > I know nothing aboot that. > > -Jeff Khoury

[Michael Martin]

If I understand Jeff's description correctly, removal of the tweety renders the spark arrester non-functional.  The cone serves to deflect glowing carbon particles aside, so that they travel to the space beside the "tweety tube", thus preventing them from immediately exiting the muffler.  With tweety removed, the particles can exit the muffler while they are still glowing. Mike Martin, Louisville, KY [b]From:[/b] Jeff Khoury [b]To:[/b] revmaaatin [b]Cc:[/b] DSN KLR650 DSN_KLR650@yahoogroups.com> [b]Sent:[/b] Wed, December 30, 2009 1:33:22 PM [b]Subject:[/b] Re: [DSN_KLR650] Re: i need help pls - Muffler Mod Instructions with Photos - Expanding on the Spark Arrestor Inlet / Spark arrestor. Peering in to the muffler after you've removed tweety, you can see the spark arrestor.  It is a "cone type" not a "screen type".  It essentially looks like the bottom of a soda can with "fan blade" type fins radiating out from the edges.  This completely covers the inlet to the second chamber.  A neat side-effect of this mod is visual.  My brother was following me one night on a road trip.  At freeway speeds, he said he could see the spark arrestor glowing red inside the muffler.  cool, huh? The inner baffle of the second chamber is almost exactly 2" in diameter.  Cutting the  hole any larger than this is useless, as you would be unable to get the exit pipe in place, and you may chew up the inner perforated liner when the hole saw breaks through.  2" is definitely MAXIMUM. -Jeff Khoury

[Jeff Khoury]

#ygrps-yiv-735441042 p {margin:0;}That is possible. However, my version of the mod, with the exit pipe inserted and welded, maintains that void area on the sides.  Granted, it is only 2" long instead of about 6, so ymmv. Another option would be to get the screw-on tip that others use, and place a brass screen behind it when you screw it on.  Then there would be no question at all if it were functional. -Jeff Khoury Astatic Solutions, LLC.

----- Original Message ----- From: "Michael Martin" To: "DSN KLR650" DSN_KLR650@yahoogroups.com> Sent: Wednesday, December 30, 2009 1:26:45 PM GMT -08:00 US/Canada Pacific Subject: Re: [DSN_KLR650] Re: i need help pls - Muffler Mod Instructions with Photos - Expanding on the Spark Arrestor   If I understand Jeff's description correctly, removal of the tweety renders the spark arrester non-functional.  The cone serves to deflect glowing carbon particles aside, so that they travel to the space beside the "tweety tube", thus preventing them from immediately exiting the muffler.  With tweety removed, the particles can exit the muffler while they are still glowing. Mike Martin, Louisville, KY [b]From:[/b] Jeff Khoury [b]To:[/b] revmaaatin [b]Cc:[/b] DSN KLR650 DSN_KLR650@yahoogroups.com> [b]Sent:[/b] Wed, December 30, 2009 1:33:22 PM [b]Subject:[/b] Re: [DSN_KLR650] Re: i need help pls - Muffler Mod Instructions with Photos - Expanding on the Spark Arrestor Inlet / Spark arrestor. Peering in to the muffler after you've removed tweety, you can see the spark arrestor.  It is a "cone type" not a "screen type".  It essentially looks like the bottom of a soda can with "fan blade" type fins radiating out from the edges.  This completely covers the inlet to the second chamber.  A neat side-effect of this mod is visual.  My brother was following me one night on a road trip.  At freeway speeds, he said he could see the spark arrestor glowing red inside the muffler.  cool, huh? The inner baffle of the second chamber is almost exactly 2" in diameter.  Cutting the  hole any larger than this is useless, as you would be unable to get the exit pipe in place, and you may chew up the inner perforated liner when the hole saw breaks through.  2" is definitely MAXIMUM. -Jeff Khoury