Re-Route Breather Vent Kama 554

[3RRL]

Your probably wondering why I'm using a "T"?
When I made the OEM oil fill/breather cap to fit those large pipes, it finally cracked in half. So I needed to make a new "cap". I added a little extension that makes the whole breather a little taller and gives me a straight shot from the new shut-off valve to the air intake tube. The bottom of the "T" is connected by a pipe nipple to a connector. And the connector is welded to the OEM breather flange that bolts up to the valve cover. The top of the "T" will have that breather plug I made. The middle of the "T" is where the shut-off valve is.

I also added a larger 1/2 pipe elbow and welded that to the air intake tube.
Then I got some clear vinyl 3/4" ID tubing to connect the valve to the air intake tube. I was able to do exactly like Larry said ... adjust the valve opening just enough to take the annoying smoke away. The new breather cap works good so I had to open the valve almost completely before the smoke disappeared. When I changed engine rpm I could see a little puff of smoke and then it would disappear again. So I think I have it set perfectly now.

Thanks for the great idea Larry!
This is what it looks like.
Rob-

 

[GuglioLS]

Hey Rob,

That came out better than expected. So it works then? I mean, you were able to adjust the suction rate with the valve? Is there still a .200" restriction somewhere in the plumbing or just the valve? My thinking was that the valve would have been closed off more that it is, oh well so much for my prediction on that.

Seems to work though and definitely looks great .... Oh and does you filter minder still work with this mod? In other words if the filter gets restricted the filter minder indicates a blockage right?


Larry

 

[3RRL]

This mod took care of the oily smoke coming out of the old breather completely.
The extra tall breather does not let any oil get sucked up like what was happening with the stock breather flange. I can can see some of the smoke condense as it goes through the clear tube, but no oil getting sucked up.

The small .200 opening was not doing it.
That's why I went to the 1/2" pipe elbow instead. I used a 1/2 valve so the ID is 1/2". I think I could've used a 1/2" pipe nipple without the valve and that would be the perfect opening. It needed to be quite a bit larger than what I had guessed too. I checked the filter minder by blocking the air filter intake opening and it registers a block. However, the engine bogs down but keeps running roughly because it can suck a slight amount of air through those breather cap holes. By putting my hand over the air filter opening shutting it off abruptly, there is an immediate difference to the filter minder and it pops up yellow. Doing it slowly MAY not make it register. So when the filter gets plugged up slowly, I don't know if the filter minder will register it or not? But I will feel the difference in how it runs (like before).

I'm not dissatisfied though, because the main annoyance was the smoke coming out of the old breather cap. I can deal with the air filter even if the filter minder does not register. It would be like stock, I guess. Sometimes you can have your cake and eat it too ... other times not. Again, I'm still not sure of this and only time will tell if indeed the filter minder will register.
Rob-

 

[valley]

Greetings Rob, I like the new route for the breather. My Foton has none at all. It does have a small down vent on the side inspection plate. I'll put that on the list. Pulling that vapor out of the crankcast will eliminate condensate. I like also the use of the clear tubing. Richard