Banana pipe modification (make it less crappy?)

Joined
Sep 2, 2017
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#1
Hey so I'm stuck with my banana pipe on my good bike how can I fix it's restrictive qualities?

My bike use to do 40 easy now that my stock pipe beater is occupying another bike I now have the banana back on my daily driver.

It dropped back to 26 mph is their a way to make it drive better or modify it so it's not so restrictive without being obnoxiously loud.
 


Joined
Jul 1, 2018
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#2
Well I have seen a very disgousting picture about them. Someone cut them in half and it just had pipes in it... You can maybe get rid of the pipes but not sure if it will do anything good. I ordered one, hope it won't be here in the 30 days and I can refund it... It's just cheap chinese junk
 

Street Ryderz

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#3
That was me! I cut one open to see why it didn't work the way it should and found that it was nothing more than a muffled pipe.You could remove the internal baffles and make use of the chamber but that means it would have to be all welded back together and have some header length added for it to work!
 

Street Ryderz

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#5
Yeah, it might have been you. I did see the screenshot. Eww.
I did this a few years back to show folks and warn away from it's use yet many still bought it. There is a different one out there now though that has no internal baffles and the little stinger comes out at an angle,the header is still too small in dia and length but it's an improvement on the original.
 

Attachments

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#7
That was me! I cut one open to see why it didn't work the way it should and found that it was nothing more than a muffled pipe.You could remove the internal baffles and make use of the chamber but that means it would have to be all welded back together and have some header length added for it to work!
What about custom baffling or ripping them out and installing custom piping......

WA state says it has to have baffling and I'm about to reg in Cali to bypass WA codes.
 

HumanPerson

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#11
And please don't go with one of those bikeberry speed demon expansionchamber/muffler.
They have at least 6 inches of pipe sticking into the chamber from above, i had cut one open and seen that and fell on the floor.
 
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#16
Yeah... no. I got the banana pipe that has the end at an angle pointing to the ground. Well.... The metal part that is welded to the pipe (The part that has the screw holes in it) is welded on slightly bent. The left hole for the screw is almost at the top of the metal, not in the middle. The right one is center. The weld marks come out about a centimeter. The diameter of the exhaust pipe at the bottom is about 2/3 the stock pipe. Shame on quality control... I mean it was just 8$ so. :D
 
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#17
Yeah... no. I got the banana pipe that has the end at an angle pointing to the ground. Well.... The metal part that is welded to the pipe (The part that has the screw holes in it) is welded on slightly bent. The left hole for the screw is almost at the top of the metal, not in the middle. The right one is center. The weld marks come out about a centimeter. The diameter of the exhaust pipe at the bottom is about 2/3 the stock pipe. Shame on quality control... I mean it was just 8$ so. :D

This is the voodoo

https://www.ebay.com/p/80cc-Motoriz...2%26rvr_ts%3D0bf42b881650ac3d67849640fff535cf
 
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#18
I have the banana pipe and have used the stock exhaust. it works ok I think and I notice an increase in bottom end torque and have not noticed any top end speed lost. one thing that is nice with it is how it stays close to my frame and I can ride over curbs and trees and stuff and nothing hits my pipe like a stock exhaust . to each their own. I wasn't going to spend 1/2 the price of a motor for an expansion chamber to eliminate my exaust getting knocked off by something I am cruising over. ( yes I have done this and it ruined my exhaust pipe and bent the studs and tore the gasket and am lucky it didn't crack the jug
 
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#19
I have the banana pipe and have used the stock exhaust. it works ok I think and I notice an increase in bottom end torque and have not noticed any top end speed lost. one thing that is nice with it is how it stays close to my frame and I can ride over curbs and trees and stuff and nothing hits my pipe like a stock exhaust . to each their own. I wasn't going to spend 1/2 the price of a motor for an expansion chamber to eliminate my exaust getting knocked off by something I am cruising over. ( yes I have done this and it ruined my exhaust pipe and bent the studs and tore the gasket and am lucky it didn't crack the jug
You curb jumping ?! Lol


Yo bike IS A "THOT"

I JUMP steel plates in road and bumps only my bikes all aluminium 7005 tubed.
 

Tyler6357

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#20
I did this a few years back to show folks and warn away from it's use yet many still bought it. There is a different one out there now though that has no internal baffles and the little stinger comes out at an angle,the header is still too small in dia and length but it's an improvement on the original.
Why would they make it that way? How can you get any benefit from the expansion with pipes inside like that? I'm confused.
 
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