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Those of you with pods, what do you do with the breather hose?

  • Thread starter Thread starter zig06
  • Start date Start date
Z

zig06

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Those of you with pods, what do you do with the valve cover breather hose? On my '83 GS750es the valve cover breather hose plugs into the airbox, but now that I'm going with pods I have nothing to plug into. I was thinking that I would just buy a straight through automotive fuel filter and then add some more hose and route it down and under the bike.

Good idea? ~ bad idea? ~ got a better idea?
idea.gif
 
I ran mine back under the seat where the rear air box used to be and ran it into a little home made catch can. Eventually if you've got a little bit of blowby going, it will make a oily mess that's merely a pita but nothing more.
 
I put a little filter on it and ran it straight up.

P1230247.jpg


P1230246.jpg


This has two benefits.
First, the filter can absorb any blow by if it occurs.
Second, since it goes straight up any blow by has the chance to run back down into the valve cover where it came from.
 
I have a little K&N and an old Cool Whip bowl with a hole cut in it for the filter nipple.
Even new engines get a little oil blow by.
Nice pics Kid :p
 
chef1366 said:
Nice pics Kid :p
Click to expand...
Smartazz. ;) It's 10 F in my garage, I wasn't about to go back and see if I could get some in better focus.:twistedevil:
The filter has a chrome top; I got it off the chrome accessories wall in my local auto parts store for a song.
 
I just got a longer hose and ran it out back behind the engine, worked for me.
 
I made a catch tank out of a bit of spare PVC tube I had lying around and glued clear acrylic perspex circles in the ends as sight glasses. I mounted a breather filter on a brass hose fitting on one end and have the hose from the breather cover going to another hose fitting at the other tank. I also have a little fuel tap from a mower shop as a drain.

However, it's started weeping oil out the ends where I glued the end caps in, I'm guessing the glue doesn't like the oil.

Someone from another forum put me onto this:

https://www.pegasusautoracing.com/productdetails2.asp?utm_expid=10520551-6&RecID=4703&utm_referrer=https%3A%2F%2Fwww.pegasusautoracing.com%2Fkeywordsearch.asp

Providing they'll ship internationally for a good price that'll be the replacement.
 
0920151631_zpsrcg91e8y.jpg


V-Twin Chrome Engine Breather Oil Collector 40-0595 which I managed to find for under $50 online.
 
I'm about to pod/jet the wife's bike, too. I'm thinking real hard about T-ing the breather hose and plumbing the ends into the pods, either into the boot or into the center of the end plate.
 
Yep, I got the same little filter as BassCliff and put it right on the valve cover outlet. Periodically, I pull it off and clean it.
 
I went old school on my son's 650. :-k

I just bought a new hose (it's about 6 feet long) and cut it long enough to follow the frame down to the swingarm pivot. The hose extends an inch or so below the engine so it's in the air stream, and the end is cut at an angle to provide just a bit of suction.

I know it's not the environmentally-responsible solution, but it works.

.
 
I understand the purpose of a catch can, what's the point of a filter? Isn't the breather an outlet for blow by gases? Does it ever suck air into the valve cover?
 
The filter is merely a medium to catch the oil droplets as they pass by.

It is an effort to be a bit more responsible than I am, with my open hose. :oops:

You are correct, any movement of air will likely be going OUT, but as the engine cools,
I am sure that some will go IN as the air in the crankcase cools off and contracts.

.
 
Steve said:
I went old school on my son's 650. :-k

I just bought a new hose (it's about 6 feet long) and cut it long enough to follow the frame down to the swingarm pivot. The hose extends an inch or so below the engine so it's in the air stream, and the end is cut at an angle to provide just a bit of suction.

I know it's not the environmentally-responsible solution, but it works.

.
Click to expand...

Mine is similar, but uses the exhaust to pull a slight vacuumm on the engine...

View attachment 42129
 
Last edited:
hannibal said:
I understand the purpose of a catch can, what's the point of a filter? Isn't the breather an outlet for blow by gases? Does it ever suck air into the valve cover?
Click to expand...

The breather vents both ways, piston movement causes pulses of pressure in the crank case.
From the little I know a crank case is mostly pressurized while running so it is mostly venting out, but by that very nature, at some point, it has to suck back in.
 
No rings seal perfectly, so crankcases are positively pressurized by blow by.
 
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