Plumbing Crankcase Ventilation into Pods

Ok I was going to buy the pods to, but have no intentions of running the crankcase breather back into the airstream. So you guys are saying I am gonna need a crancase breather, or a filter? I am more in the trucks/cars automotive feild and somewhat newer to the road bike thing (I grew up on dirt bikes though). I am just asking a question as simple as what to do with the vent hose from the case? Thanks, Chad

 

The simple answer is to read the previous three pages and draw your own conclusion. No single person is right or wrong. The simple answer is, there is no simple answer.

It's more about what you can afford and whether you want to look after your engine properly.

If your still unsure after reading the last three pages then leave your airbox in.

If you can't work it out with all the information provided then you should leave well enough alone. We don't need another three pages discussing the same topic again if your not prepared to read.

 

Umm yeah read through it twice and didn't come up with a straight answer. No need to get all uptight and rude about it.

 

oooooooh rude dude.

 

Well if you read it twice then you should understand that there is no simple answer. It's all there in black and white. The choice is yours alone as to how you do it. Nobody can say what you should do.

 

Do a google search for "motorcycle crankcase filter" and you will have a few options for sticking a filter on the end of the vent hose.

 

Hi,
You guys put on an informative read here.
I have a 82 xj750 maxim. I am currently putting on a Mac 4-1 exhaust, A dynojet stage 3 kit and k&N pod filters. I guess there are two options for the crankcase hose.

1. I am considering connection the crankcase hose to the pods.
or
2. Just leaving the hose and putting on a mesh of some sort to help prevent anything from entering it.

What do you suggest for better overall performance and less maintence?. I am not too concerned about the environmental aspects.

Thanks a lot for your replies to this.

 

Environmental issues aside, I'm going to suggest the plumbing of the hose to your pods so that they can all take turns pulling the vacuum on the hose to help with ring seating and it spreads the oil/fuel vapor across the cylinders so that you don't load down only one cylinder.
Simpler set up is simply venting to the atmosphere but you do loose the vacuum.

 

Another advantage of plumbing into the pods that hasn't been mentioned yet is that they help prevent your pods from falling off.

Quite a few posters have mentioned losing one or more pods. It might come loose but can't fall off.

 

Rigging the pods with a little safety tether is probably a good idea.

Wasting time trying to rig-up the crankcase vent to the Pods is silly!

Run a hose from the crankcase vent to a place where a right angle fitting can be permanently affixed and a section of hose extended down and held in place - vertically.

Cut the bitter end of this downward vertical extension on a severe bias, so that there becomes a "Leading edge" of hose before the elongated opening to atmosphere.

At speed ... the lower pressure created behind the hose will cause the crankcase to become vented.

 

not quite following you,
would you be able to post a sketch, explaining

Cut the bitter end of this downward vertical extension on a severe bias, so that there becomes a "Leading edge" of hose before the elongated opening to atmosphere.

Thanks a lot for you time on this,

 

This is the best I can do without a camera.

We are looking at the rear of the hose after its end (Bitter end) is cut on a severe bias (Slash-cut, elongated-cut, slanted) ...

The idea is to have a good-sized opening at the rear of the hose ... leaving ample area in the front where the air will have to rush-around the front of the hose.

I'd fabricate this outlet with rigid material ... PVC, Copper, Aluminum ... your choice.

 

Thanks,
hopefully I can figure this out

 

you could use the vent system idea from a quater midget race kart...catch tube type and vent top to breather...maybe one from a drag bike ,mod. to fit?

 

Hi XJers, does anyone think the lack of PCV back into the intake could result in valve cover oil seepage? ive been mulling this over for awhile, it seems that when i went to 4-2 Ex with pods and the painfull rejet of my carbs i gained a seep out of my valve cover, 2 valve gasket changes later its still happening, not serious but definatly anyoying!

 

The problem is less likely to be Crankcase gases, as it is Heat related form running hotter with the Pods.

The Scavenge Oil in the Cam Gallery's is Hotter (thus) thinner than before the Pods happened.

Look on eBay and find an Oil Cooler set-up off a Turbo or a 900.
That will help you with some of that heat.