| Author | Message | ||
     X1bully |
Found this pic. Note the red breather next to the battery. So I was thinking this tubes outlet needs to be above the oil reservoir in the tail. From what's in the picture. It basically has to be above the transmission only? I saw a really cool mod where someone had a chain drive bike and made a aluminum tube to drop the oil on to the chain. This is of course I think is a cheap way to keep the oil off the rear tire.  | ||
| Hootowl |
The oil reservoir under the tail is for engine oil. The vent is, as you say, for the tranny, so their relative heights are not important. Coincidentally, stock, it terminates near the top of the oil tank with no filter, just an open tube. If you're going to mess with yours, I'd terminate it in a catch can. | ||
| Natexlh1000 |
You do NOT want that on your chain. It's mostly greasy water. Either put it in a catch can or route it to the street like myself. | ||
| Screamer |
One concern to be aware of when routing the transmission vent line is to be certain that that there are no sharp dips in the routing (above a horizontal line, below and above again). Sharp dips in the routing have the potential (if the line is long enough) to create a "p-trap" effect. If there is a p-trap, oil vapor can drain back to the trap when the engine is shut off. The trapped oil when cooled, blocks the vent line. When the engine is started, the transmission can't breathe and eventually builds enough pressure to blow out the oil in trap - which can dump oil all over the tail of the bike. | ||
| X1bully |
For some reason I was thinking if it was pointed down like in the pic it would be like the siphoning of a fish tank without a pump.. I was going to extend the tube so it drops behind the left foot peg because I removed the undertail plastic and the mud guard. | ||
| X1bully |
Yeah I read that about making sure the tube has no bends and it remains consistently round. Or it with do the blow out thing. Mine will occasionally do that so I'm thinking of the reroute. Catchcan I've looked but all seem to big and I have no plastic under my seat or tail. Don't really want to mount anything to the side of the frame either. Kinda want to keep it somewhat clean looking.. | ||
| X1bully |
How do you route yours Nate? Got a pic? | ||
| Natexlh1000 |
Wait are you referring to the tranny vent or the crank vent? I'm confused now. If it's the tranny vent, I suggest getting the open end up as high as possible. It doesn't need a filter. The original location for the vent is in the tail, far back. The crank breather is what I routed to right in front of the exhaust outlet. I get a bit of a fog on the rear tire but at least my right leg and shoe isn't covered as before. | ||
| Hootowl |
"The original location for the vent is in the tail, far back." On an X1, the original location is near the oil tank, under the seat. | ||
| Ratbuell |
It doesn't need a filter. WRONG. The end of the hose should at least have a piece of foam in or on it. I forget which bike it was - I think my S1W but might have been the M2 - but I had a mud dauber plug up the end of the (un-filtered) hose, up under the seat/cowl. I forget what problem it led to, that led me to chasing the breather hose to the end and finding the issue...I want to say it was excessive puke either from the base of the breather hose, or maybe from the clutch cable...regardless, you DO need to have a filter of some sort on the end of the hose to keep critters (or plain ol' road gunk that the oil vapor glues together) from blocking the end of the breather. It has to BREATHE. I zip tied a small bit of shop rag over the end of the hose, and no problem since. | ||
| Natexlh1000 |
My X1 tranny vent is not filtered at all other than having an "airbox" comprised of the seat and tail. On the crank case breather, a filter in not needed since it's only exhaling from there. The stock setup uses umbrella valves in the head that act as check valves. Put a balloon over the end of the hose with the engine running and tell me what it does  | ||
| Hootowl |
That's a good idea, Joe. All my bikes are getting treated this evening. | ||
| X1bully |
I've had a k&n crank case breather on that tube. I found some kart catch cans that are cheap $11-20 called g-man. So I might go with one of those. | ||
| Ratbuell |
They "exhale" when they're running. They're a small, dark, safe space for a critter when they sit. I had to crush the last 2" of the damn hose with vice grips to shatter the dauber nest, in order to get it all out of the hose. | ||
| S1owner |
I run mine high up under the tail and it makes a turn to point out the right side. Just in case it pukes at some point I wanted the fluid away from my rear tire!!! | ||
| Hootowl |
That has happened to me twice. Leaky crank seal. Fortunately I had not removed the subfender; it kept the oil off of the tire. | ||
| X1bully |
Yeah. Still even with the sub fender. I think it is good measure to eliminate the situation as a just in case mod. I read there was a recall from Harley on one of their recent bikes maybe a year or two ago that caused oil to spill on the rear tire.. With the crank filter on that hose I think it captures the oil but when it's soaked it will start to drip on the very edge of the tire making hard rights risky without the subfender or undertail. That's my issue now. The kart catch won't work, the inlets look to small. Well a catch can is the solution for sure.. and I think a very important safety measure.. |
