I recently installed the Zip-Ty 449/511 engine vent relocator kit on my 2011 TXC511. For now it is attached to the stock vent hose leading to the clean side of the air filter box.
Changed oil and put in 1150cc of 0-40. Then I took it out to the Millican Oregon State Hare Scrambles and rode the 40 mile loop as a test rider plus a couple of 60 mph runs up and down the highway for 4-5 miles, then a GP at Eddieville for over an hour, fast course with a fair amount of high RPM running, followed by a few laps at Washougal at a fairly sedate pace. Today I opened up the airbox to see how it looks in there.
Clean side air horn has just a slight mist of oil. This is also what it looked like when running 850cc of oil with the standard breather setup. In other words, it all looks normal on the clean side.
Dirty side of the airbox has a little splooge around the mounting posts. No puddles, and no dripping out the drain hole. And I am still amazed how little dirt even makes it to the dirty side of the airbox...this side hasnt had a good cleaning in months and the filter was barely dirty next to the air intake and pretty much spotless everywhere else.
My conclusion is that the Zip-Ty vent alone with 1150cc of oil is a perfectly viable setup, and a nice improvement over stock. Now I need to install the one I just ordered for the TXC449!!

Changed oil and put in 1150cc of 0-40. Then I took it out to the Millican Oregon State Hare Scrambles and rode the 40 mile loop as a test rider plus a couple of 60 mph runs up and down the highway for 4-5 miles, then a GP at Eddieville for over an hour, fast course with a fair amount of high RPM running, followed by a few laps at Washougal at a fairly sedate pace. Today I opened up the airbox to see how it looks in there.


Clean side air horn has just a slight mist of oil. This is also what it looked like when running 850cc of oil with the standard breather setup. In other words, it all looks normal on the clean side.

Dirty side of the airbox has a little splooge around the mounting posts. No puddles, and no dripping out the drain hole. And I am still amazed how little dirt even makes it to the dirty side of the airbox...this side hasnt had a good cleaning in months and the filter was barely dirty next to the air intake and pretty much spotless everywhere else.
My conclusion is that the Zip-Ty vent alone with 1150cc of oil is a perfectly viable setup, and a nice improvement over stock. Now I need to install the one I just ordered for the TXC449!!