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Pods, what to do with crank case breather.

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Guest
Looking for idea's.

I've thought about using a small filter and just leave it out in the open.

What about routing it to the the sprocket cover to lubricate the chain?
 
Most people just stick a filter on there and be done with it. Using blowby to lube the chain would probably be a bad idea... Hot motor oil will fling off the chain and get everywhere.
 
it should be fine, if you have hot oil pumping out the top breather then you have serious engine problems
 
Geez that was slack of me... I never ended up putting pic's in that thread nor here!

So, I turned these bits:

IMG_4679.jpg


IMG_4699.jpg


Into this:

IMG_4720.jpg


Which mounts with a breather filter like this:

IMG_4725.jpg


IMG_4726.jpg


It's been on for a while now and no dramas to date and I haven't had to empty it yet although there is a little blow by in there now...
 
lol I have a few ideas now. I know allot of people could use that idea when they switch to pods :)

Good job pete.
 
Mekanix said:
lol I have a few ideas now. I know allot of people could use that idea when they switch to pods :)

Good job pete.
Click to expand...

Cool, cheers mate. It's not the prettiest solution but it's what I had on hand and all I had to buy was a new breather filter and the hose fittings.

If I was going fancy I would've probably used some aluminium or something.
 
Mine is a hose that goes to one of those small filters like Pete's under the seat. Pete's is a better setup though for sure. Better to have some kind of tank.
My filter sits in a cup & the cup catches any blowby. I change the tissue in there every few months when I remember.

The hose is angled up slightly up under the tank so that blowby has a chance to condense & run back down into the head.

:)
 
salty_monk said:
Mine is a hose that goes to one of those small filters like Pete's under the seat. Pete's is a better setup though for sure. Better to have some kind of tank.
My filter sits in a cup & the cup catches any blowby. I change the tissue in there every few months when I remember.

The hose is angled up slightly up under the tank so that blowby has a chance to condense & run back down into the head.

:)
Click to expand...

Yeah my first plan was poorly thought out... hose ending in the breather filter but it was angled down to fit under the tank, which meant my nice new battery box covered I made and painted got sprayed by any drop of blow by while riding... not exactly a lot of oil but very annoying...
 
pete said:
That's a real nice Trumpy but I can't spot the breather set up...
Click to expand...

It's the grey hose on the rear mudguard. No need for a catch-can if you're just dripping the odd drop behind your back wheel. That's how they left the factory.

In 71 with the advent of the OIF bikes a small offshoot from the breather went up to the frame near the neck. I doubt if any oil ever made it up there when it was easier just to keep dripping behind the rear wheel. Still, it showed that BSA really cared about the environment.....:rolleyes:
 
The tube coming down behind the transition is attached to a Hayden Krank vent that continues down underneath the bike. The vent is a one way valve that is ported to maintain a three to five lb. vacuum in the crank case. Apparently it seals the rings better and eliminates any interference internally from underneath the pistons. All I know for sure, is that I put it on and it smoothed out and increased low end power and my gas mileage went up 6MPG.
 
No, It is an umbrella valve. I guess they are both one way valves of sorts, but the umbrella valve would be more closely related to a reed valve. This valve allows air to be pushed out, with a very limited amount allowed to seep back in maintaining it's designed vacuum level. Basically a one way valve maintaining a negative pressure.
 
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