Crank case filters

[mcgroom]

I getting some blow by. Not much, but after reading some threads I bought a crankcase filter.

I have 02' 107" S&S. I actually have a hose that T's into the backing plate from the top of my heads. I also have a line the runs from the bottom of my rear jug into my backing plate.

Which one should I attach a filter to and what should I be plugging.

Was this before the EPA stepped up the standards?

 

[gooddoggie]

McGroom;
I don't know if this is your problem but I will throw it out just for something for you to check. Not knowing what your particular set up looks like I can only relate something I saw somewhere when a mechanic was working on a HD evo engine and changing out the carb for a S&S "E" and he also had a rubber hose that "T"'d into the back of the backing plate from his heads. He stressed that he had run into blow by problems before by pushing the hose all the way on the male spigot on the back of the backing plate. What happens is that it literally closes off any passage through the filter. To eliminate any possibility of it being closed off in the future he would always file a semi circular horizontal notch in the end of the male hose spigot on the plate so that it's end wasn't flat across anymore so no matter how much you push the hose on the spigot, there will always be an air passage. I hope your fix is this easy, good luck

 

[CCRainman]

Mcgroom, yo have what most of us with the 107's have. Take the crankcase hose and remove it from the backof the carb plate. Run it over the tranny to th rear of the bike and put a filter on and secure it right in front of the rear fender. The other way is to route it the same way and use a puke can. I'm busy this weekend but I'll try to post up pics od my setup next week.

 

[mcgroom]

Mcgroom, yo have what most of us with the 107's have. Take the crankcase hose and remove it from the backof the carb plate. Run it over the tranny to th rear of the bike and put a filter on and secure it right in front of the rear fender. The other way is to route it the same way and use a puke can. I'm busy this weekend but I'll try to post up pics od my setup next week.

Hey Rain, is the crankcase hose the rubber one that T's off of the heads that runs in between and is mounted at the top of the carb plate or is it the one that I suspect that is on a 90 degree elbow that runs from the lower rear of the engine up to the bottom left side of the carb plate?

 

[CCRainman]

Hey Rain, is the crankcase hose the rubber one that T's off of the heads that runs in between and is mounted at the top of the carb plate or is it the one that I suspect that is on a 90 degree elbow that runs from the lower rear of the engine up to the bottom left side of the carb plate?

No those are your head breathers and they also puke oil. I find that mine pukes more oil from the bottom hose which is the crankcase.

Look on the back of the backing plate at the bottom and you'll see a hose that runs down to the oil pump.

If your is puking from the top more then you need to look into a 1 piece breather setup that will route the oil back into the carb or get a puke can for that. Check your oil level, sometimes if you have too much oil it'll puke also and the worst case scenario is that your checkballs are stuck or dirty in the oil pickup.

 

[01Mastiff]

I've got a 2001 107ci. I was always getting blow by until I started filling the oil tank up to where it just reached below the "low mark". Since then no blow by. If I fill it to the full line it will blow that amount out within a day or so.

 

[mcgroom]

No those are your head breathers and they also puke oil. I find that mine pukes more oil from the bottom hose which is the crankcase.

Look on the back of the backing plate at the bottom and you'll see a hose that runs down to the oil pump.

If your is puking from the top more then you need to look into a 1 piece breather setup that will route the oil back into the carb or get a puke can for that. Check your oil level, sometimes if you have too much oil it'll puke also and the worst case scenario is that your checkballs are stuck or dirty in the oil pickup.

Rain, I only have a line on the bottom left side (goes to crankcase) and a line on top from the heads. I will check again, but I think this is my setup.

 

[CCRainman]

Rain, I only have a line on the bottom left side (goes to crankcase) and a line on top from the heads. I will check again, but I think this is my setup.

Those are the 2 lines that give you the blow by. You can run either to a puke can. The first picture is the crankcase hose which is the one furthest tothe left out of the 3. The second pic is my puke can set up

This is a picture of an optional setup for your head breather

 

[Agentbman]

Guys I have tried lowering the oil level, but that does not seem to work. I am going to order a puke can and install that.

Do I need to cap where the hose went to the backing plate? Oh...and I am a rookie wrench turner, but every mistake makes me better...so I keep telling myself.:loony:

 

[CCRainman]

Guys I have tried lowering the oil level, but that does not seem to work. I am going to order a puke can and install that.

Do I need to cap where the hose went to the backing plate? Oh...and I am a rookie wrench turner, but every mistake makes me better...so I keep telling myself.:loony:

Try my puke can set up it works well. You just run a new hose around the tranny to the puke can which you can mount on the frame or the tranny. You do not need to cap the back or the backing plate. Make sure you oil level is good and not overfilled. Overfilled oil bag will cause you blow by also.