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

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Re-routing Crankcase breather hose


Senior Member

Status: Offline
Posts: 422
Date:
Re-routing Crankcase breather hose
Permalink  
 


When I drowned my bike a while back I wondered how larger (not that large) bits of organic matter got in the motor as they wouldn't have fitted through the air filter and the filter was almost 100% clean on the inside despite having a layer of mud about 10mm thick on the outside. The exhaust didn't go under, so it didn't go up there. 

Short version - it was a partial drowning, bike ran fine for the rest of the day - about 60-80klm or something. Get home to wash it and find an airbox half full of water and mud - not my finest moment. 

A mate wondered the other day, when we we're laughing about how well it runs as to whether stuff went up the breather when the bike was switched off or fell over when it was off ( as happened a couple of times that day after the incident)

It appears the airbox end of that hose is completely open, thinking of re routing it above the airbox and putting filter foam on it. I am assuming the emulsification chamber (whatever its called) that you drain sometimes doesn't have anything in it stopping things going back into the motor? Given the top of the airbox is modded its pretty easy to get water in there. 

Cheers Leigh.

 



__________________


Super Guru

Status: Offline
Posts: 1385
Date:
Permalink  
 

I glued a bit of Scotchbrite scouring pad over the hole in the airbox that leads to the "emulsifying chamber". Saves doing anything more drastic
Ride safe, (and keep it upright in the water?)
Simon.

__________________


Senior Member

Status: Offline
Posts: 422
Date:
Permalink  
 

Yeah that's a good idea too, thinking I will just add some hose and get it out of the airbox and up higher, shouldn't be too hard.



__________________


Super Guru

Status: Offline
Posts: 1385
Date:
Permalink  
 

Higher than the airbox? Remember there will be a bit of oil blowing out as this pipe has the air displaced by the underside of the piston blowing through it every stroke, with oil droplets in it.
S.

__________________


Senior Member

Status: Offline
Posts: 422
Date:
Permalink  
 

Hmm guess thats a good point, maybe I'll just put a filter on it in the airbox, I'll think about it a bit more.

__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard