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TOPIC: gutting stock mufflers

Re: gutting stock mufflers 1 year 4 days ago #11

AllenZ wrote:

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.

thats what I am talking about...I am thinking making them the size of the piece that goes onto the back of the mufflers..

Hanshi
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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 4 days ago #12

That,s exactly what I did. The attachment is a picture of the back of my muffler.	AllenZ OFFLINE Fresh Max Posts: 27 Thank you received: 5
Last Edit: 1 year 4 days ago by AllenZ. Reason: Adding File The administrator has disabled public write access. The following user(s) said Thank You: No_Max

Re: gutting stock mufflers 1 year 4 days ago #13

AllenZ wrote: That,s exactly what I did. The attachment is a picture of the back of my muffler. Yes that's what I am talking about.....great.thanks	Hanshi OFFLINE Gold Max Posts: 1525 Thank you received: 338
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 3 days ago #14

AllenZ wrote: That,s exactly what I did. The attachment is a picture of the back of my muffler. Hi AllenZ, Did this give you more 'bass' over stock? Any disadvantages you found by opening them up? I too have xpipe with stock cans but looking for a little more bass	snf05 OFFLINE Senior Max Posts: 173 Thank you received: 19
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Re: gutting stock mufflers 1 year 3 days ago #15

love it	Hanshi OFFLINE Gold Max Posts: 1525 Thank you received: 338
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... Last Edit: 1 year 2 days ago by Hanshi. The administrator has disabled public write access.

Re: gutting stock mufflers 1 year 3 days ago #16

Increasing the exhaust diameter gives you a much deeper tone and will make it louder. The sound is like a deep base mussel car. That tinny sound is gone. The only disadvantage would be if you have or intend on adding one of the muffler tip. I purchased the exhaust tips from Python Motorsports that are in the picture. I have to get the inside diameter machined out because they do not slip over the larger exhaust pipe that extends past the back of the muffler cover. That's not even a big deal for any machine shop, I thought I should just mention it. With over 1,000 miles on this exhaust I can't see any disadvantages.

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Re: gutting stock mufflers 1 year 3 days ago #17

Thanks Allen, When you say 'from the Y back', I take it you left the Y intact with no modification to it from stock? Is the Y now the same i.d. as the inlet and outlets? Chris	snf05 OFFLINE Senior Max Posts: 173 Thank you received: 19
Last Edit: 1 year 3 days ago by snf05. Reason: Spelling The administrator has disabled public write access.

Re: gutting stock mufflers 1 year 3 days ago #18

Yes the y is not changed. From the Y back I cut off the existing pipe then increased the size to 1.3" ID 1.5" OD.	AllenZ OFFLINE Fresh Max Posts: 27 Thank you received: 5
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Re: gutting stock mufflers 1 year 2 days ago #19

thanks for the input, I was thinking of cutting before the Y and cutting into the shape of a Y hoping for better air flow..	Hanshi OFFLINE Gold Max Posts: 1525 Thank you received: 338
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 2 days ago #20

AllenZ wrote: Yes the y is not changed. From the Y back I cut off the existing pipe then increased the size to 1.3" ID 1.5" OD. Thanks man going to do this mod next days off	snf05 OFFLINE Senior Max Posts: 173 Thank you received: 19
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