A forum for owners of Yamaha TTR250 trail and enduro bikes!

aussiedeuce · Veteran Member

pcv? crank case breather?

JOHNYBOY · Super Guru

sounds you have crankcase pressure possible rings

aussiedeuce · Veteran Member

this is what I am talking about, moo. I would like to modify if possible so only fresh air is going into intake.

JOHNYBOY · Super Guru

pipe up your crankcase breather to breathe to atmosphere make sure it is not blocked in the pipe not kinked if you do this make sure it is not leaking onto your tyres

TTRfan · Super Guru

A previous owner has already had a go at your emulsifier outlet as it shouldn't feed into the airbox - if that is what it's doing. It's not clear from the photo.

This is what it should look like:

Emulsifier 1.jpg

aussiedeuce · Veteran Member

ok then this should have a little catch thingy on it?

aussiedeuce · Veteran Member

And this is where the air box drains?

TTRfan · Super Guru

Yep!

aussiedeuce · Veteran Member

excellent. Easy fix and there'll be lot less residue in the air box.

thanks heaps everyone.

TTRfan · Super Guru

Emulsifier on airbox.jpg

aussiedeuce · Veteran Member

That easy. Cheers mate.

DANKWHEELIE420 · Veteran Member

CAN YOU JUST GET RID OF IT
WHAT DOES IT DO AND WILL IT DAMAGE MY BIKE?
BECAUSE I JUST RIPPED IT OFF AND RAN ALL THE TUBES THROUGH A
1 WAY VALVE I GOT RID OF THE BOX ARE THEIR ANY OTHER OPTIONS?

DANKWHEELIE420 · Veteran Member

IT HASNT SEEMED TO HURT MY BIKE AT ALL I JUST KEEP THE AIRBOX CLEAN IMEAN WHAT DOES IT DO?

TTRfan · Super Guru

Its an emulsifier and is there to take out any water or oil mist before it hits the airbox. All to do with emission control to stop the oil breather fumes going straight into the atmosphere - or all over your bike cry

I don't see that there is a problem with having it properly fitted. You aren't going to save a lot of weight or gain power by removing it confuse

Same with the resonator box higher up - Mr Yamaha wouldn't have gone to the expense of fitting one if it did nowt wink

Brian

DANKWHEELIE420 · Veteran Member

can you just route it through a 1 way valve below the swingarm ?

DANKWHEELIE420 · Veteran Member

thats the way i have it i have my fuel overflow just one wayed and took all of the crap off short and sweet i just got another 3way pvc bend and it workd great i will post pictures and and updates

DANKWHEELIE420 · Veteran Member

could you just route it into a 1 way valve under the bike?
and put a reed filter in the top of the valve cover?
from a xr 250?

DANKWHEELIE420 · Veteran Member

cuz id b gr8 on that