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Stock muffler, baffle removal tips and is it worth it?

This is a discussion on Stock muffler, baffle removal tips and is it worth it? within the Yamaha YFM350 Raptor/Warrior ('87-Present) forums, part of the Performance /Technical category; Thanks, i just recieved a 94 Warrior and want to tinker a bit. I remember the old Hondas you could remove the baffles and it ...


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Old 12-26-2002, 02:15 PM   #1
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Default Stock muffler, baffle removal tips and is it worth it?

Thanks, i just recieved a 94 Warrior and want to tinker a bit. I remember the old Hondas you could remove the baffles and it made them throatier( if thats a word) sounding. Just wondering. Please post some must do ideas that are cheap. Maybe carb tricks or muffler, or air box.
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Old 12-26-2002, 03:44 PM   #2
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dont take it out it overheats the combustion chamber and you lose midrange power its not a good idea
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Old 12-26-2002, 06:24 PM   #3
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Very confused, wouldn't the baffle create back pressure which in turn causes heat? I am just wonderi not questioning you. I would think a free flowing pipe would increase flow and power. Dragsters run open exhaust for power, why not a four wheeler? Thanks more thoughts please
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Old 12-26-2002, 06:57 PM   #4
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You know yall saying this and that about the combustion chamber gettin overheated from taking the baffle out well my opinion is its bull, if anything it lets the motor breathe better, u do loose back pressure but the warrior has a tank for a motor and that thing can really take the pressure, ive had this 95 for over a year and have run no baffle and it has easily taken on other warriors with baffles in and leaves them, plus it sounds better, no major power gains, but it does sound better and just a lil better..........just my opinion......if ya dont like it........So sue me already
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Old 12-26-2002, 07:14 PM   #5
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Taking out the baffle gives it a little better sound but not the "throatie" sound you are looking for.
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Old 12-26-2002, 07:18 PM   #6
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gives a kinda popping growling sound not a throaty deep mellow sound. if you pair that with some air box holes I think it helps a good bit. You could feel the air blowing through mine while standing 15 feet behind it if you goosed it a little.
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Old 12-26-2002, 08:03 PM   #7
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thats what they said in an issue of dirt wheels or atv action or one of those mags it over heat the combustion chamber
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Old 12-26-2002, 08:12 PM   #8
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some guy on another thread said that you need to have the back pressure that the sa gives you cuz it keeps the valves from slamming shut then they dont let enough exhaust out and it overheats the comb. chamber
you have to adjust valves more often wo it

i had mine out but then i put it back in
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Old 12-26-2002, 09:18 PM   #9
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Then wouldnt every aftermarket pipe make your engine blow up? you could roll a golf ball through my cobra. Dont remove all the baffles though, just take out the end cap/spark arrestor. If you remove the baffles it will sound like a dirt track race car screaming across your yard making your windows rattle and your neighbors scream, kinda like my POS cobra.
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Old 12-26-2002, 10:47 PM   #10
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I would think that it would heat up the combustion chamber due to burning lean - unless you rejet it richer. I suppose you could keep it lean, melt the piston, then have a little bit more fun tinkering a little bit further in!
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