M42 Crank Case Breather

[Drift Doctor]

Can I remove the pipe that runs from the Valve/cam cover to the bottom of the throttle body, fit a crank case breath filter to the valve cover outlet, and blank off the connection at the bottom of the throttle body. Or would this effect any thing?

[D. Clay]

On the plus side it keeps an older motor cleaner in the intake and plugs an opening into the intake. On the negative, it's illegal as to the smog laws and creates a little more potential for oil leaks due to eliminating a slight vacuum inside the crankcase.

[RouteZeroDesign]

A different method, which is the best of booth worlds is running a catch can.
You dont have to buy these and you can make one very easily yourself.

• Basically get a smallish can such as Red bull or any other branded alternative

(apart from pepsi, which will blow your car up....seriously youve been warned : P )

• Drill two holes into the side of the can, supporting the can so that you dont crumple it.
• Drill these holes beside each other around 15mm or half an inch from the top.
• Run one pipe from your cam cover into one hole, and another pipe from your manifold into the other.
• Now fill your can with material. Some people suggest using wire wool, but the idea of metal fragments that near to my engine makes me cringe.

Id suggest using a low density sponge........bob square pants:D

• Now seal your pipes to the can by running a bead of glue around the point where they enter the can.
• Now seal your can. You can do this by glueing a nickel (or a dime if your pimp) over the hole in the top.

An alternative to this is using a bottle....use whichever is easiest for you!

• The final step is to zip tie your catch can to your engine. This step is up to you. Nowhere is wrong....apart from the exhaust manifold, which results in your car impersonating the towering inferno....

oil on hot metal = :eek::confused::mad:.
Oh and make sure to keep it vertical.

• Another step if your feeling adventurous is to install an oil level pipe.

You do this by drilling two holes in the side of the can, preferably on the opposite side to the pipes. Drill one hole 15mm from the top and the other 15mm from the bottom.
Now try and bend your pipe (sounds painfull) so that it is as straight as possible and then has two 90 bends, so that the tube is parralel to the can, apart from at the two ends where it would be perpendicular.

• Now glue this pipe into the can like the other pipes.

You can draw a simple scale on the side of the can reading from "meh" all the way upto "WTF"...which stands for "Wow, This is Full".

• Another step you could do is to add a drain plug in the bottom.

You can do this by drilling a hole in the bottom of the can, glueing in a piece of tubing and then threading in a bolt that is a similar size to the tube.
Then when your catch can is at "WTF" it can quickly be returned to a
non cholaunt "Meh"
[/LIST]

You now have yourself a kickass homemade catch can, and saved yourself $75 by not buying one from cusco.

Oh i forgot....make sure to drain the can of RedBull first....it wont give your car wings...trust me!

Next week...Home made CAI:D:D:D

[ClubSport]

This is what I did.

http://www.pbase.com/rsrock/oil_catch_can

[bme30]

^^^^ nice set up..

any problems with the set up.. preformance wise.. or throwing codes?  

just asking because the route is about 4-5 times longer than what it used to be from the head to the manifold