Oil catch tank for Crankcase breather..

[andyzeetec]

Seems to have solved a problem, bought one to keep it clean and make sure no oil vapours only clean air enter the carb, combustion chamber.   

"Small tank with a filter to act as a baffle for the oil particles, transparent  to check if it’s doing it’s job and lastly a release valve to empty the oil which has been collected without unbolting it"

Before and after..

[cider]

Hi
Looks the part  where abouts did you find such a small catch can that fits in the bis engine bay

Cheers
Pete

[andyzeetec]

Here..    http://oilcatchtank.com/

Hi
Looks the part  where abouts did you find such a small catch can that fits in the bis engine bay

Cheers
Pete

[RicePuddin]

On a slightly similiar note I'm getting a bit of a leak where the Distributor/electronic ignition bolts onto the block. Is this normal? It's leaving a little pool of oil on top of the block just beside the original fuel pump mount (Circled). Can I fix?

[cider]

Spot on  Thank you for the link

[andyzeetec]

Just an update, catchcan has worked very well, carb is as clean as a whistle. Heres a pic of it with the oil it's caught..

[Bambino126]

That looks good.
But what size valves do you need to order it with to go on the bis?

The options are 6, 10, 12, 15 or 19mm

[Xylaquin]

Great find Andy, I'm getting a lot of oil in my air intake and filter box.

Did you get the 15mm or 19mm version?

[andyzeetec]

I can't remember but I've gone and had a measure.  The outside diameter of the brass serrated spigot is 16.5mm (and the bore is 13mm). Maybe thats classed as 19mm or 3/4"?
You may want to check with the supplier.
I also measured the airbox spigot which matches the brass can serrated spigot at 16.5mm

[Xylaquin]

I took a tape measure to my pipe and went for the 15mm one.

My engine isn't running well, even after two days now the oil catch tank is just over a quarter full of goop! 

[drcdb15]

even after two days now the oil catch tank is just over a quarter full of goop! 

If so much oil is being pushed up into the air intake, that would explain why the engine isn't running well - the plugs are probably oiled up and not sparking properly.

More worrying is why is excessive oil being pushed up the breather pipe? Is the engine over-filled with oil? If the oil level is OK, are other oil return runs open and free-flowing? Is the oil filter blocked? Sounds like something somewhere is impeding the free flow of oil around its intended circuit.

[Xylaquin]

It's not overfilled. In fact my engine has a substantial oil leak, particularly when I've just parked it (since the oil is warmed up the viscosity allows it to run through wherever the leak is quicker). It drips directly below where the gearbox meets the engine... but that could be gravity bringing the drip point over.

Doubt the oil filter is blocked, I cleaned it out a couple of weeks ago.
No idea about the other oil return runs... presumably they're inside the engine, so I can't check.

The oil in the breather pipe is creamy, however the oil in the engine itself is fine (I can tell from both my leak and the dipstick being black as night!) Occasionally when I look at the oil filler cap it has a layer of cream on it too.

Needs a good machining/rebuild I reckon!

[thepuddlejumper]

Could be worn rings, resulting in pumping up the pressure in the crank case.

Ralph

[Gadge]

It's not overfilled. In fact my engine has a substantial oil leak, particularly when I've just parked it (since the oil is warmed up the viscosity allows it to run through wherever the leak is quicker). It drips directly below where the gearbox meets the engine... but that could be gravity bringing the drip point over.

Doubt the oil filter is blocked, I cleaned it out a couple of weeks ago.
No idea about the other oil return runs... presumably they're inside the engine, so I can't check.

The oil in the breather pipe is creamy, however the oil in the engine itself is fine (I can tell from both my leak and the dipstick being black as night!) Occasionally when I look at the oil filler cap it has a layer of cream on it too.

Needs a good machining/rebuild I reckon!

Years ago I had a BIS engine that did the exact same thing. After a run it would drip right at the seam of where the gear box met the engine. I figured it must have been either the crank seal or perhaps the gearbox input seal as I was using 20w50 oil in the box at the time so couldn't work out what oil it was so I replaced them only it still did it after reassembly. So I removed it once again after it blew it head gasket (again! ) and when I turned it by hand I noticed that it was weeping from the spigot bearing/bush. I never refitted that engine so never found out if it was so could it be possible that there's an oil channel that feeds the crank shaft behind the spigot?

[Xylaquin]

Could be worn rings, resulting in pumping up the pressure in the crank case.

Ralph

Probably onto something there, the engine hasn't ran as it should for months now; poor mpg, not going as "fast" as it did previously.

Replaced the spark plugs yesterday but they weren't oily (very black sooty though)

Just did a 14 mile drive and it's filled 40% of the catchment tank