Yoshi's with no baffles - Wrist Twisters
 
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post #1 of 16 Old 09-13-2017, 09:15 AM Thread Starter
Tirone
 
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Yoshi's with no baffles

So I put Yoshi tri oval slipons on my bike I got off Amazon.

But the exhaust is so bad that riding the bike everyday to work my eyes are burning and it has affected my vision.

I had no issues except occasional minor stink with the stock cans.

Is it possible that I was sold Yoshi's with no internal baffles (is that the cotton stuff inside?). I haven't opened them up but I'm just wondering if this is possible
Because I am selling the 919 which I love as a result of this.

I know little to nothing about exhaust so I'm just guessing.

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post #2 of 16 Old 09-13-2017, 10:58 AM
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Welcome to the forum, but It sounds like you are leaving soon.

There are many people here would buy or trade you for your yoshi cans (I would buy them). Internal baffles are metal inserts that are installed down the tail pipe. Exhaust "packing" is the material packed inside the muffler. I doubt you are missing the packing material.

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post #3 of 16 Old 09-13-2017, 11:18 AM
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Yoshi's are fully packed design with a straight through baffle.
They also have an optional sound level reduction insert that fits in from the end into the straight through baffle.
The packing of the cans degenerates over time, this is not a maybe, the packing only has a certain useful life.
The exhaust gets louder and the shell temperature gets hotter, especially at sustained high power levels or many hours of riding.
You can buy repacking kits from Yoshi that have new bands and rivets, or just buy aftermarket packing, reuse your bands, and find suitable rivets.
I have Yoshi's and when the packing is in good shape they are one of the quietest cans one can buy.
I had exhaust stink with the stock cans and still have it with the Yoshi cans, but nothing as bad as you are describing.
You can't get rid of it, as the exhaust outlets feed a low pressure zone behind you or your passenger and that keeps the gases from jetting away.
Try regular gasoline if you are using premium, as depending on the respective formulations it may help.
Some have found improvement by using a Power Commander to permit fuel mapping changes.
The exhaust issue can be bad in stop and go traffic.
The best solution is putting on a low can 4:1, as many here have done.
Most have been 900RR adaptations, but there are aftermarket 4:1s with low mount can that you can get either used or new.

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post #4 of 16 Old 09-13-2017, 11:30 AM
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I guess we need to first find out if you bought them "new" or "used" from amazon. New will have a break in smell, and very very used will have a hot degraded material smell. I have never experienced this stink that people have with their 919 and I did not convert to a 4:1 exhaust. I know it is a known issue with this bike though. Maybe its my California gas keeping the smell away.

2006 Honda 919 TURBO
2005 Honda 919
2014 Honda CB1000R
2005 Ducati Monster S4R
2000 Honda 750 Nighthawk -Sold
1997 Suzuki DS350SE -Sold
2002 Honda 750 Shadow ACE -Sold
2006 Kawasaki ZX-6R -Sold
2003 Honda CBR954RR (Drag Bike) -Sold
2002 Honda CBR954RR -Sold
1992 Honda 750 Nighthawk -Sold
1972 Honda CB350 -Sold
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post #5 of 16 Old 09-13-2017, 12:21 PM
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Quote:
Originally Posted by Nealio919 View Post
I have never experienced this stink that people have with their 919 and I did not convert to a 4:1 exhaust. I know it is a known issue with this bike though. Maybe its my California gas keeping the smell away.
I'm glad you don't have the stink.
It's the only beef I have with the bike.
Stop and go traffic with a slight tail wind is not at all pleasant and even worse for a passenger.
The passenger's jacket will always be dosed with stink, regardless of the conditions.
Reformulated fuel along with a catalytic converter could explain it all re you not having it.
Lucky you!

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post #6 of 16 Old 09-13-2017, 01:55 PM
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Quote:
Originally Posted by mcromo44 View Post
I'm glad you don't have the stink.
It's the only beef I have with the bike.
Stop and go traffic with a slight tail wind is not at all pleasant and even worse for a passenger.
The passenger's jacket will always be dosed with stink, regardless of the conditions.
Reformulated fuel along with a catalytic converter could explain it all re you not having it.
Lucky you!
Yuck! And I "had" a catalytic converter and no stink when I got the bike at 3,200 miles. And now I have NO catalytic converter- removed it when I installed my Delkevic SS70 twin exhaust and y-pipe. Still no smell so i'm blaming the crappy fuel we have here.

Side note: I really wanted the yoshi pipes but could not justify the price tag. And in hind sight the 9" twin Delk cans are a tad loud after a long day- I should have bought the 14" ones...

2006 Honda 919 TURBO
2005 Honda 919
2014 Honda CB1000R
2005 Ducati Monster S4R
2000 Honda 750 Nighthawk -Sold
1997 Suzuki DS350SE -Sold
2002 Honda 750 Shadow ACE -Sold
2006 Kawasaki ZX-6R -Sold
2003 Honda CBR954RR (Drag Bike) -Sold
2002 Honda CBR954RR -Sold
1992 Honda 750 Nighthawk -Sold
1972 Honda CB350 -Sold
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post #7 of 16 Old 09-13-2017, 02:16 PM
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LOL. I too wanted yoshi cans, but the price. So I got a set of 14" Delks. Now I spend half the time wishing I got the 9". The 14" are soooo long. I even made up a second bracket so they didn't shake themselves apart. I do like em but. Look good, made well, sound great and I really dig the single Y link pipe. I will try some other pipes one day though. I also don't get the stink.

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post #8 of 16 Old 09-13-2017, 02:48 PM
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I was wondering if you were gonna chime in Islandboy =) I would gladly trade you cans, but the shipping makes it un-logical.

I dont hate the cans- I love the size, and even with the inserts installed I did not notice a difference in the sound- only the power loss. The exits are so large that I can fit a soda can in the tail pipes- LOL Not too loud either, but after 30 min commute to work each day and each way- its starting to get old....

2006 Honda 919 TURBO
2005 Honda 919
2014 Honda CB1000R
2005 Ducati Monster S4R
2000 Honda 750 Nighthawk -Sold
1997 Suzuki DS350SE -Sold
2002 Honda 750 Shadow ACE -Sold
2006 Kawasaki ZX-6R -Sold
2003 Honda CBR954RR (Drag Bike) -Sold
2002 Honda CBR954RR -Sold
1992 Honda 750 Nighthawk -Sold
1972 Honda CB350 -Sold
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post #9 of 16 Old 09-13-2017, 07:35 PM
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Did any of the non-Cali 919s come with cats?

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post #10 of 16 Old 09-13-2017, 08:11 PM
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Quote:
Originally Posted by Sniper-x View Post
Did any of the non-Cali 919s come with cats?
I've read that all of the 07s came with cats.
And that the Y tube is either chromed or stainless steel, and not black.

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post #11 of 16 Old 09-14-2017, 05:48 PM
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One day, l will buy another 919. I am going to make sure it has a cat in the system.

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post #12 of 16 Old 09-14-2017, 05:58 PM
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My bike is an 02, no cat and no stink. Smells maybe slightly richer than any little four cylinder car. I use Aussie regular unleaded. Which is supposed to have a shit load of sulfur in it. Go figure. Maybe different bike brains between some models and continents.

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post #13 of 16 Old 09-14-2017, 07:30 PM
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Quote:
Originally Posted by mcromo44 View Post
I've read that all of the 07s came with cats.
And that the Y tube is either chromed or stainless steel, and not black.
All 06 & 07 MY when the EPA regs changed. Stainless Y & cat inside.

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post #14 of 16 Old 09-16-2017, 07:01 PM Thread Starter
Tirone
 
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This is an 04 with no CA emissions and a pciii running regular gas in the state of California

The cans were definitely new carbon fiber s I have to wash my jacket constantly or it would be stinking up the office since I drive to work.

The stock cans really had little odor. I thought maybe I fucked up the install and had a short check for leaks from where they connect but there isn't any.

I think it's just a sign to move on from the bike. The 350 delks on eBay will probably be the same since it's illegal to do exhaust work in CA I can't pay a shop to do a 4 into 1 down low although one guy suggested he might do it on the side.

Just feels like I'm throwing money down the drain after 800 on the Yoshi's. If I wasn't commuting everyday wouldn't care but commuting to SF this is the only way my commute is tolerable is on a bike

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post #15 of 16 Old 09-16-2017, 07:03 PM Thread Starter
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Someone said new these cans are quiet mine weren't they are pretty damn loud not as loud as a Harley tho

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post #16 of 16 Old 09-18-2017, 02:19 PM
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Someone say stink?

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