Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

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Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Where's the left rear view mirror?

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Any changes in performance of having this type of exhaust, I think its FZ16.

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

I don't wish to demotivate you. But, this mod looks eyesore to me.

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

It's a de-restricted free flow types of an exhaust. To obtain any real world performance upgrade, one would have to install performance air filters as well (at the cost of engine life).

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Yes that was my point just for increasing 0.5 ps power one is messing with engine life and violating environment laws.

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

See, there are 2 ways to it!
1. Running after numbers. The amount of hp gained. Involves a lot of money to gain even 10% performance gain and requires very professional tools and upgrade parts. Not the dabba parts sold through every Tom Dick and Harry in India.
2. Running after improving the feel of the vehicle. If there is a flat spot, there are suitable mods to address them. If the rev range needs a little tweak to make riding/driving more enjoyable, that can be done. One spends thousands and yet the overall hp figure may remain the same; but the way that vehicle would move post mods would plaster a permanent smile on one's face.

Sadly, we mainly opt for #1 and then blame modifications/modders. It's a very well known fact that most mods won't outlast a stock vehicle, but in our country we get such poor products that one can't even run the same number of kms as the amount spent without running into issues.

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

What did I see
Reminds me of starting phase of Powerhouse FZ thread

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Was something I wrote made you feel so?

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Nopes, the mod on the fz

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Based on my modest knowledge ... my 2 paisa. Please forgive me and possibly educate if I was wrong.

The flow resistance of one large pipe is less than two small pipes of the same cross-sectional area (because there is more wall area in the two small pipes, and it's the boundary layer at these walls that causes the restriction) - this is why multi-cylinder engines have manifolds to joint the various exhaust ports together into single pipes, with the manifolds being just long enough to avoid or achieve undesirable or desirable pressure pulse and gas-ram effects.

Given that the valves are already as large as it is possible to achieve the separation into discrete pipes is difficult to achieve without degrading the flow characteristics of the exhaust.

Considering the flow of gases, It will be one pipe which will mostly attract the flow of gases based on the exit temperature, pressure and velocity whilst the others pipes will have reduced flow in them under there is enough pressure to cause a flow in them.

Now you can play with the pipes and create and 'expansion' before the gases are diverted etc etc ( was termed pulse tuning by tooner - Powerhouse FZ reference ) but. EOD is it worth it. Will there be sufficient back pressure ? Is there a proper inflow of gases ? Is AFR accurate ? Is the damage, money spent worth it ?

If you are going for the cosmetic play ... IMHO the tripe pipe setup has failed (sorry :-( ). Maybe something on the lines of exhaust on the MV Augusta Brutale might look better

https://s-media-cache-ak0.pinimg.com/736x/1b/df/18/1bdf180b1fda78e38dc3ef4697922911.jpg

https://i.ytimg.com/vi/ouOG5lOE_3s/maxresdefault.jpg

FZ16 3 cylinder mufler unbalanced discharge!

Hello guys,
need a help!!
Problem 1:
I have installed 3 cylinder muffler on my fz16 with active cat-con. The issue I'm facing is during drop of throttle, there is a light poping sound. Also the out going fumes/burnt gas is not equally balanced on all cylinders (refer to the attached picture). Bike performance is much smoother and barely any raise in sound, although it gives heavy bass note(better than stock one). I had done this modification to enhance the pickup as greater amount of burnt gas can exit during throttling (have widened the output mouth of cat-con by 1/2 inch with two cylinders attached together to the main outgoing muffler as branching unit). The top most cylinder exhales the burnt gas, rest of two just blow cold air.
Can some body help me, how to balance the equal distribution of burnt gas among all the three cylinders and stop the poping sound as well.

Problem 2:
I have installed 5 aux led lights; 2 red blinking break 5W led lights at rear, two 20W white spread led light near head light and one 15W long distance task led light on handle bar. apart from this the main headlight (bajaj avenger make) is equiped with 35W led light and audi type strip led for parking light. I have done this work to travel long distance in dark. My question is should I replace my battery with higher capacity or the stock one will suffice the current installation if run all at the time. (refer attached picture)

All the modification done on my bike are street legal, if not then can i get it endorsed?

Please advice..

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!

Hi Divya..
this is an old picture..Il share the new one as the modification job is still on..

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Hi Chandan..
The performance has changed a lot, a slight in power (only felt when instantly compared with new fzs) but greatly in handling!! A critic of FZ liked the ride after the modification job. Though the modification is not complete yet, but still a lot of riders who took the trial was happy including me. The sound note has changed.. more of bass effect but still almost soundless (can be compared with stock one). The only issue here is the poping sound during deceleration and unbalanced discharge. The alignment has also not been done to right position as more of modification job is yet to be done. In fact there's only 1.75kg of addition to OEM weight of the bike. After tuning the AFR, the emission is also in control. Over all performance is very good.

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Dear Soundar,
Thanks for your honest opinion.. but its kinda taste i liked it.. its more of my requirement- both functional and cosmetic!!

Re: Yamaha FZ 3 cylinder mufler unbalanced discharge!


Hi Chandan/Divya..
Good know this.. whereas I know this mod will slightly raise any ps, but yes handling has changed a lot..!! Its more sporty and and delighting to ride than the stock one.. and yes.. with better sound note (sporty/woofy) still under 80 decibels and after tuning the AFR, with standard emission level I don't think its creating any disturbance to the environment. If I would have removed the cat-con it would definitely have violated the norms!!
If the burnt gas exhales out easily (better flow with active cat-con) then how come engines being disturbed.. infact the burnt out gas which creates problem has been provided a better route; henceforth it should raise the performance of engine. AFR has be done following standard tuning procedure.
If i'm wrong anywhere please guide.

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[QUOTE=Divya Sharan;1197563]See, there are 2 ways to it!
2. Running after improving the feel of the vehicle. If there is a flat spot, there are suitable mods to address them. If the rev range needs a little tweak to make riding/driving more enjoyable, that can be done. One spends thousands and yet the overall hp figure may remain the same; but the way that vehicle would move post mods would plaster a permanent smile on one's face.

Divya,
could you please elaborate this.. as what suitable to be done!