Breather mod - what is it good for?

LeFrog · Jun 27, 2005

My bike had the breather modded so that it does not connect to the frame anymore, but is cut instead, connected with a wire to the hose coming down from the frame and a piece of foam inserted in it.

What is it good for, what are the pros and cons? It's seems that it's a piece of foam I'll have to think about cleaning and oiling once in a while but if there is a performance increase, why not.

Now if the performance increase is minute (and by the way this bike has more power than I need), can I just default back to the stock setup?

Thanks

Taffy · Jun 27, 2005

it's done so that your bike doesn't suck oily fumes from the breather.

also, it's done so that when you're upside down your bike may start easier without oil in the carb from the above.

thirdly, bob figured you'd be looping it all the time so he prepped it for ya!!!

the sponge is to stop the immediate ingress of water in a river etc.

i would recommend it.

cleaning? not necassary. either it was good to go in the first instance or it wasn't.

regards

Taffy

husabutt · Jun 27, 2005

Crankcase venting 101

Bobzilla · Jun 27, 2005

I fall down a lot so I did the mod and I am cheap so I used a piece of lawn mower air filter in the end of the hose with a piece of saftey wire through the hose to keep the foam from moving either way. You wont need to oil it as the venting from the crankcase will provide all the oil you need. I cleaned it about twice as it pushes out more than it pulls in it never was a problem.

BundyBear · Jun 28, 2005

Taffy said:
may start easier

To be read "less likely to completely lock up on a gutful of oil"

wildbill · Jun 29, 2005

If you hook the hose back into the frame and then crash say upside or the wheels higher than you then you will hate yourself for hooking it back up. With the hose unhooked you don`t have oil running into your carb and making the bike a pain in the a** to start and to top it off when it does start smokes worser than a tire fire. There are other reasons to once you get home then have to clean everything out carb,airbox etc. alot of work just for hooking a hose back up.

Breather mod - what is it good for?

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