Yamaha Star V-Max Forum :: Topic: gutting stock mufflers (1/4)

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TOPIC: gutting stock mufflers

gutting stock mufflers 1 year 1 day ago #1

I can't remember if this has been talked about but is it possible to gut my stock mufflers to aloud more air to leave the Max	Hanshi NOW ONLINE Gold Max Posts: 1523 Thank you received: 337
My name is Helen, I got my 1st bike in 1973 it was a 650 Yamaha in 1974 I had 2 650 Yamaha's I then got a 850 Yamaha and was the 1st in New Zealand to get the 1100 Yamaha.I have a 2005 xjr1300 I would like someone to buy me a 2009 VMax as I just love the look of this bike and I would love to ride... The administrator has disabled public write access.

Re: gutting stock mufflers 1 year 1 day ago #2

Morning! Tim, the vmaxguru did a video of the procedure to do this. I know, as I did it. However if you are expecting the sound "level" to increase, you have to get rid of the "cat box" under the max. This is where almost all the baffling takes place! Search the archives and you will find alot of info on this subject Helen. Best of luck, VMaxChuck	VMaxChuck NOW ONLINE Expert Max Posts: 864 Thank you received: 241
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Re: gutting stock mufflers 1 year 1 day ago #3

VMaxChuck wrote:

Morning!

Tim, the vmaxguru did a video of the procedure to do this. I know, as I did it. However if you are expecting the sound "level" to increase, you have to get rid of the "cat box" under the max. This is where almost all the baffling takes place!

Search the archives and you will find alot of info on this subject Helen.

Best of luck, VMaxChuck

Thanks for that, I dont have the cat, I just love the stock look of the mufflers and hoping to allow more air to flow out of them, so need to have them gutted. Also tried to look for this on site, not sure what it was called..

Hanshi
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Thank you received: 337

My name is Helen, I got my 1st bike in 1973 it was a 650 Yamaha in 1974 I had 2 650 Yamaha's I then got a 850 Yamaha and was the 1st in New Zealand to get the 1100 Yamaha.I have a 2005 xjr1300
I would like someone to buy me a 2009 VMax as I just love the look of this bike and I would love to ride...

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Re: gutting stock mufflers 1 year 1 day ago #4

Here are a couple of threads for you Helen. http://www.starvmax.com/forum/welcome-mat/63038-how-to-get-louder-exhaustand-keep-oem-look http://www.starvmax.com/forum/welcome-mat/69550-nothing-like-speed-between-your-legs#69648	Forgottenone1227 OFFLINE Senior Max Posts: 386 Thank you received: 96
Every motorcycle has a reason for being. With some, that reason just is more obvious than with others. - Cycle World Classics The administrator has disabled public write access. The following user(s) said Thank You: VMaxChuck, Hanshi

Re: gutting stock mufflers 1 year 1 day ago #5

If you gut out the stock muffler the wall thickness of the titanium shell is not thick enough to support the back pressure or harmonic vibration....they will crack at the weakest point!	890209 OFFLINE Gold Max Posts: 1205 Thank you received: 308
2009 Vmax - The Money Pig 2002 Vmax - Mr. Max Last Edit: 1 year 1 day ago by 890209. The administrator has disabled public write access. The following user(s) said Thank You: Qtip

Re: gutting stock mufflers 1 year 1 day ago #6

Hanshi wrote: I just love the stock look of the mufflers and hoping to allow more air to flow out of them. Helen, the stock mufflers don't have any restriction in them. You gutting them wont give you any further power or air flow. You might change the sound and more than likely just structurally weaken the mufflers	VmaxOZ OFFLINE Platinum Max Posts: 2278 Thank you received: 1268
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Re: gutting stock mufflers 1 year 1 day ago #7

Not to mention with no cat it will be extremely loud ! You better be sure you want to do it before you gut them. vmaxmercer	vmaxmercer OFFLINE Platinum Max Posts: 2564 Thank you received: 1028
One Man One Bike and A Hole Lot of Rubber to Burn! The administrator has disabled public write access.

Re: gutting stock mufflers 1 year 1 day ago #8

www.starvmax.com/forum/installed-mods/48...-ready-to-rumblllllq ! Thats the sound of gutted cans. I ended up wrapping the inside with fibreglass to give it more bass. Without any packing the titanium will crack and split. You'll ruin the mufflers if you run them gutted.	No_Max OFFLINE Platinum Max Posts: 2615 Thank you received: 2054
Lean & Mean it in every corner of your life... If it wasn't for us the fast lane would rust... V4'S are music to the seat of my pants... Get your V-Max ECU Re-Flashed to Full Power! Last Edit: 1 year 1 day ago by No_Max. The administrator has disabled public write access. The following user(s) said Thank You: VMaxChuck

Re: gutting stock mufflers 1 year 1 day ago #9

thanks guys, I am hoping to be able to put larger pipes inside the stock mufflers this has nothing to do with sound. Just air flow...well thats what i am hoping for	Hanshi NOW ONLINE Gold Max Posts: 1523 Thank you received: 337
My name is Helen, I got my 1st bike in 1973 it was a 650 Yamaha in 1974 I had 2 650 Yamaha's I then got a 850 Yamaha and was the 1st in New Zealand to get the 1100 Yamaha.I have a 2005 xjr1300 I would like someone to buy me a 2009 VMax as I just love the look of this bike and I would love to ride... The administrator has disabled public write access.

Re: gutting stock mufflers 1 year 1 day ago #10

The stock muffler enters in one pipe then y's out into two pipes. From the Y back I increased those pipes to a 1.3" ID - 1.5" OD pipe. I repacked the muffler with stainless steel wool before putting it back together. I have the X pipe so my cat is gone. The sound is amazing, not too loud not to quiet, and has held together good, no cracking. This is not my original idea. I sure I read it on this forum but I can not find that post. It was a couple of years ago. I am presently installing the muffler tips from Python Motorsports. I am having the ID of the muffler tip machined open so they will fit over the small amount of pipe that extend out of the muffler shell. This might work for you. I also love the look of the stock mufflers.