OIL FILLER TUBE

[Labrauer]

Hey guys I have a question on the oil filler tube on a 218ci engine that I can't remember which way the cap faces. Does the cap on top of the oil filler tube face towards the radiator or back of the engine as far as the opening with the screen or does it amke a difference.

 

Thanks in advance,

Larry

Edited March 6, 2016 by Labrauer

[Frank Elder]

I'm looking at page 222 of my dodge shop manual for 1946 through 49 and it shows the screen facing the fire wall.....kinda like cowl induction.

[Don Coatney]

Most caps and tubes have a dimple and slot so they only go on one way. Screen to the firewall is correct.

 

 

[Plymouthy Adams]

if it has the screen window, it should face the firewall so to draft the crankcase...

[Labrauer]

Thanks much guys. I thought that was the way but was not sure because of the vacuum tube that runs from the distributor to the carburetor base seems to be in the way. The filler tube has a crick in it so I will have to turn it a little to let the tube get past it.

 

Thanks again

Larry

[laynrubber]

Hmm I may have installed my tube backwards then.....mental note, go to garage tomorrow and check.

[dale]

I like the color !!!

[laynrubber]

Ok, so in my wisdom.....I installed my fill tube 180* off and my cap opening faces forward. haven't driven the car much yet.....maybe 2 miles so far. What is going to be my problem with this ????? It should still draft....air in the top, drawn out the bottom.

[austinsailor]

My B1B has a little spring loaded flip cap to pour in oil, and a flexible tube that goes back under the cab for the vent, no screen. I guess it's an option to put fumes past the passengers?

[dpollo]

I have heard the above referred to as Oklahoma Breathers  a term from Dust Bowl times

when rings were worn pretty badly but there was no money for repairs.

[soth122003]

Laynrubber,

 

The problem with it facing forward is it will be a ram air induction of crap from the road and forced into the filter material by the fan. With it facing backwards you draft the air out by the fan blowing past it and creating a venturi effect.

 

Joe

[laynrubber]

Dragging this post up from way back. So if the cap faces the firewall and the air past it vents like a venturi is the road draft tube the air inlet ? I thought the air went in the fill cap, through the engine and out the draft tube.

I ask now because the car is now just getting back on the road. 

[Don Coatney]

The flow is air enters the oil fill tube cap and exits through the road draft tube. The road draft tube creates a slight suction in the crankcase when the car is in motion.

[TimFX]

So... if I wanted to top up the  engine oil, I would remove the filter and pour into the tube?

[_shel_ny]

16 minutes ago, TimFX said:

So... if I wanted to top up the  engine oil, I would remove the filter and pour into the tube?

Either you add oil there, or try to get it in the dip stick tube

[Niel Hoback]

Tiny wee little funnel.

[desoto1939]

I have the oil cap that has the vents opening all the way around the circumference of the oil filler cap.  So when someone is saying that the opening has to be facing the firewall for the aiflow to work correctly then I guess the factory option of having the type of oil cap filler is not engineered correctly but this was a MoPar option

 

rich hartung

[Andydodge]

Neil............I have a tiny little funnel for wee..........oops........wrong forum again...........yeh, I know I'm going back to my corner...............lol..............andyd