Big gun exo insert? - Yamaha Raptor Forum
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post #1 of 69 (permalink) Old 03-24-2017, 12:15 AM Thread Starter
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Big gun exo insert?

So I was tooling around and decided to defile my raptors butt by poking around the exhaust hole. I never actually had a good look at it until now. I thought I had a quiet core in it! I was pretty aggravated because never thought to check it big guns just stuck one in it for no reason. But on closer inspection, it's a conical insert from what I can tell.

So I looked up on their website and I can't even find the same core if I wanted to replace it. All I find are flow through designs. Their ad says it produces more sound? Wouldn't the tube design do that better with more performance? Anyway. I need to repack because I'm sure all the insulation was burned out when I was shooting blue flames last summer. And I do have a lot of hours on it. So I'm gonna try to talk to them tomorrow about getting a normal dang insert and packing it. The cone can't be the best performance insert is it?

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post #2 of 69 (permalink) Old 03-24-2017, 01:06 AM
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My barker QC's aren't coned. for what its worth.
Call em, curious to see what they say.
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post #3 of 69 (permalink) Old 03-24-2017, 01:07 AM Thread Starter
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So I Yanked out the core. Probably not a grand idea since I don't have the stuff to repack. But apparently this is what passes as a high performance muffler. Those conical baffles are supposed to "increase sound" I don't doubt that it gives it a deeper tone. But wtf. The replacement cores don't have that crap in the tubes. So I'm gonna get on the phone with big.guns and let them know about a thing or two and see if I can't get some free packing or at least some free expedited shipping. Obviously they quit using that design because it didn't work out or something. They basically just tacked a couple little beads of weld holding it in otherwise the core is still in good shape so instead of buying a new one. I'm just gonna try to rip the guts out of this and repack it accordingly.

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post #4 of 69 (permalink) Old 03-24-2017, 01:07 AM
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I believe that's your spark arrestor. A quiet core would be a plate across the opening, with a tube welded in the center. They are easily made if you have tin snips and a welder.

2007 RAPTOR 700, SAND QUAD, 66HP @ OCP. CUERVO +1 HEAD, HDD 5050, 11:1 CP, +5 HR, PC5, DMC FORCE 4, +2 TB, FCI, LONE STAR XC +1, HD TIE RODS, CCP, WORKS, JOKERS +1 STEM, RDZ CHAIN TENSIONER, ASV, +2 1/2 FACTORY SWINGARM, +4 ALBA AXLE, +2 REAR HUBS, DR.D, ODI, 1 1/8 CARBON BARS, DG BUMPER. GYTR: BRAKE LEVER, SHIFT LEVER, NERF BARS, HEAL GUARDS. BILLET: GAS CAP, BRAKE COVER, THROTTLE LEVER, OIL DIPSTICK, BAR MOUNTS. LED LIGHTS, FLUIDYNE RADIATOR, GRIPPER SEAT, 3 OHM COIL, PLUG WIRE MOD. 1.6 CAP
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post #5 of 69 (permalink) Old 03-24-2017, 01:09 AM Thread Starter
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What really grinds my gears is that I know it's causing some major flow problems because when I pulled the core out, only 3/4s of the insulation came out. The rest looked like burnt rats nest. The other stuff near the end still was in good shape

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post #6 of 69 (permalink) Old 03-24-2017, 01:10 AM Thread Starter
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Quote:
Originally Posted by DEZPERADO View Post
I believe that's your spark arrestor. A quiet core would be a plate across the opening, with a tube welded in the center. They are easily made if you have tin snips and a welder.
The spark arrestors on big guns look like this I didn't even have it on for more than an hour when I first installed muffler because the arrestor rattled so bad

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post #7 of 69 (permalink) Old 03-24-2017, 01:10 AM
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4 stroke packing isn't very expensive from your dealer, call them.
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2007 RAPTOR 700, SAND QUAD, 66HP @ OCP. CUERVO +1 HEAD, HDD 5050, 11:1 CP, +5 HR, PC5, DMC FORCE 4, +2 TB, FCI, LONE STAR XC +1, HD TIE RODS, CCP, WORKS, JOKERS +1 STEM, RDZ CHAIN TENSIONER, ASV, +2 1/2 FACTORY SWINGARM, +4 ALBA AXLE, +2 REAR HUBS, DR.D, ODI, 1 1/8 CARBON BARS, DG BUMPER. GYTR: BRAKE LEVER, SHIFT LEVER, NERF BARS, HEAL GUARDS. BILLET: GAS CAP, BRAKE COVER, THROTTLE LEVER, OIL DIPSTICK, BAR MOUNTS. LED LIGHTS, FLUIDYNE RADIATOR, GRIPPER SEAT, 3 OHM COIL, PLUG WIRE MOD. 1.6 CAP
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post #8 of 69 (permalink) Old 03-24-2017, 01:12 AM Thread Starter
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That's what I'll do then if I can't get big guns to foot the bill. I mean I almost don't want to change it because of how loud it already is but what is the point of spending 700 bucks on a full exhaust if it's flowing barely any better than stock?

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post #9 of 69 (permalink) Old 03-24-2017, 01:38 AM
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The only way the packing should get blown out is if the perforated core is misaligned with the pipe or end cap. In your case, it's the pipe.

2007 RAPTOR 700, SAND QUAD, 66HP @ OCP. CUERVO +1 HEAD, HDD 5050, 11:1 CP, +5 HR, PC5, DMC FORCE 4, +2 TB, FCI, LONE STAR XC +1, HD TIE RODS, CCP, WORKS, JOKERS +1 STEM, RDZ CHAIN TENSIONER, ASV, +2 1/2 FACTORY SWINGARM, +4 ALBA AXLE, +2 REAR HUBS, DR.D, ODI, 1 1/8 CARBON BARS, DG BUMPER. GYTR: BRAKE LEVER, SHIFT LEVER, NERF BARS, HEAL GUARDS. BILLET: GAS CAP, BRAKE COVER, THROTTLE LEVER, OIL DIPSTICK, BAR MOUNTS. LED LIGHTS, FLUIDYNE RADIATOR, GRIPPER SEAT, 3 OHM COIL, PLUG WIRE MOD. 1.6 CAP
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post #10 of 69 (permalink) Old 03-24-2017, 01:39 AM Thread Starter
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this is what I think about Big guns Pansy idea of putting an unnecessary baffle in a supposed performance exhaust.

I should be able to sleep a lot better now that I ripped out my raptors anti rape apparatus

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