Breather for valve cover?

[Waydin_Stewart]

Is it possible to have an oil cap with a vent for the valve cover? I am fixing to install a 12v tappet cover and want to vent the valve cover aswell, so ill have 3 vents. Is it possible to vent the valve cover without drilling and welding bungs and doing what i said and making or buying an oil cap with baffles and filter on it?

[dripley]

I have seen some after market breathers installed in few valve covers, but would not know where the best place to buy one is nor how they were installed. 

[Mopar1973Man]

If you have to vent that much you might consider doing a rebuild. I'm still running my vent mod and not blowing any oil out.

[Ben]

My little truck had 2 breathers in the valve cover. 

 

Just push in type through grommet. 

 

Never had any issues with them or  unusual oil deposits under them. 

 

 

Along these lines. Nothing special.

 

Valve Cover Breather

 

The motor had maybe 3000 miles on a non stock rebuild.

Edited April 5, 2018 by Ben

[snowshoveler]

I looked at a 24 Valve engine the other day and it dd not have the usual breather in the front. There was just a round cover there.

The breather was in the same place as the 12 valves. In the side cover.

Has a tube on it that would be pretty easy to just stick in the frame rail. I was pretty impressed.

I might have to grab the setup. Will get pics tomorrow if need be.

Regards Chris

[Mopar1973Man]

Just make sure your vent cant kink shut. Nice way to blow the rapper cover gasket.

[dripley]

14 minutes ago, Mopar1973Man said:

Just make sure your vent cant kink shut. Nice way to blow the rapper cover gasket.

You mean my truck has rapper in it somewhere? No wonder it's been acting up.

[SilverMoose]

Anyone know of a good truck rapper.  Sorry Mike just had to

 

L8tr

D

[dripley]

Just now, SilverMoose said:

Anyone know of a good truck rapper.  Sorry Mike just had to

 

L8tr

D

My son WRAPS vehicles and most anything else anyone pays him to do if that counts.

[Mopar1973Man]

Sorry dann spell checker on my phone. Today is mobile day for me. 

[dripley]

11 minutes ago, Mopar1973Man said:

Sorry dann spell checker on my phone. Today is mobile day for me. 

So I assume we meant tappet instead rapper? And to think I thought I solved my problem.

[Waydin_Stewart]

I don't have to vent that much. The truck has 0 blowby at an idle and ide guess very little on WOT runs. The oil cap only spins in a circle cause the engine rattles. I don't beat on this truck. Just figured the more the merrier.I might have to look into those breathers. Im not a fabricator by any means and cutting holes is my enemy. I am an oem guy with a little touch of love on top to suit my needs.

Edited April 6, 2018 by JAG1

[jlbayes]

The open vent breathers tend to puke oil all over even if the truck has little to no blow by.

[Waydin_Stewart]

4 hours ago, jlbayes said:

The open vent breathers tend to puke oil all over even if the truck has little to no blow by.

I thought Ben said his breathers didnt leave oil on his valve cover?

[Mopar1973Man]

The only problem I see with the valve cover breathers is the vapor coming back in the cab. Rotella and even some of the CK-4 oils now have a fairly strong oil odor when fresh. This why I made the mod to route the vapor behind the cab and not have to smell that oil vapor at every stop light. Adding excessive amounts of vents isn't going to change the performance other than mess later on. 

 

Years ago another member on CF created a vacuum vent system using the exhaust. Basically tapped in a one-way exhaust valve and the venturi effect pulled a light vacuum on the crankcase. The only problem there is the fact it would be possible pull oil into the exhaust pipe. 

 

Just better to aim it at the ground and let it vent. Keep your tubing short and rigid. Avoid using rubber hose it does get soft and kink very easy. 

[Waydin_Stewart]

I was gonna get some 3/4 heater hose and run the vent below the motor from the tappet cover. My truck has a front vent already and it already has the vent mod to run the hoe lower on the motor instead of right on the motor. The factory installed it before my parents took delivery way back. I made a bio about all the weird things on my truck that don't line up with others the same year model.

 

 

What type of hose and what size should i use to vent the tappet cover?

[trreed]

Heater hose will break down under oil.  It'll get gummy and the ends will collapse.  Best to run some oil rated hose, like turbo drain hose.  Expensive stuff tho.

[Mopar1973Man]

There was a gent here that had some sort of jacket hose that had steel braid in the jacket really stiff stuff kind of like a hydraulic hose. 

[Waydin_Stewart]

shows here on cpp its $36 per foot for high temp silicone drain hose. Pricey but if it has to have it.

 

How many feet would i need?

Edited April 8, 2018 by Waydin_Stewart

[trreed]

Its out there for cheaper. Check Crazy Carl's website. You'd need about 5 feet or so