Crankcase ventilation

[Dreadl0ck]

Hi,

So I just bought my first classic Mopar, and also my first carbureted car. It's a 69 roadrunner which arrives next weekend to Sweden. Just started to read whats needed to clear import inspections and being a 1969 model, it's not many rules which apply to it but one caught my attention

* Cars manufactured after 1968 must have a re-circulating crankcase ventilation system.

Say what now? I fixed that pretty easy on my Dodge Magnums aftermarket intake by just running a quick hose from driver side head to a hole I cut in the intake cone (which I removed and plugged after inspection) but this being a new engine to me I figured I'd ask the pros

Should I

A) Do a permanent fix - install some kind of PCV system? If so - please link what I need to buy

or

B) Do an inspection fix - please inform me on what to do

The engine is a 440 with a 850 holley double pumper and looks like this

Thanks! I hope for some quick replies so I can order the things I need and have it installed quickly since insuring a non registered car in sweden cost $1K per month :/

 

[dryheat]

I'd bet it already has the required PCV system on it. You should not have to do anything to it.

 

[Cranky]

Is there a hose going to the other valve cover with a valve in it? The oil fill cap on the driver's side looks like it's a breather type....

 

[Dreadl0ck]

Other side of the engine

Looks like a breather type too - which I can't have since I need to recirculate the gases for the inspection?

 

[dryheat]

Boy ... I would have lost a lot of money on that bet. What is that braided hose that runs from under the battery to the brake booster?

 

[eric383]

You could remove the breather on the right side(passenger side) and install a pcv grommet in the valve cover. Then a pcv valve pushes into the grommet and a piece of properly sized hose from the pcv to the proper vacuum port on the carb. Mine is on the rear of the carb at the base. Good luck.

 

[Cranky]

Yup, it's a simple fix. A buddy did that (two breather caps only) on a 318 several years back and after running a mid 13 at the track, it pushed oil out of every weak point. When he pulled into the pits, oil was dripping and it pushed the dip stick out and pushed the intake end gaskets out too. What a mess lol.

 

[beezee]

Instal the factory baffled valve covers,pvc and air cleaner will allow a pass for emissions.

 

[themechanic]

You could remove the breather on the right side(passenger side) and install a pcv grommet in the valve cover. Then a pcv valve pushes into the grommet and a piece of properly sized hose from the pcv to the proper vacuum port on the carb. Mine is on the rear of the carb at the base. Good luck.

What he said. Should look like this:

 

[Dreadl0ck]

The hose is the brake hose to the distribution block which the previous owner decided to pimp a bit. I'll do something about it down the road.

So breather on driver side, grommet+pcv hooked to carb on passenger side? Where would I buy that?

 

[slepr1]

Like everyone says its an easy cheap fix. If you understand the reasoning of 'pcv' you will pay close attention to ensure your engine breathes properly. Once you connect all the necessary pcv related pieces and get your inspection, keep them on do not remove.

I prefer this type http://www.summitracing.com/int/parts/sum-440308/overview/

Reason I like it is because it has a removable/replaceable pcv valve in it and its cheap.

For more info on the importance of pcv
http://www.shophemi.com/images/media/p-2273-arrington_ccv_bible.pdf

 

[Dreadl0ck]

So i'll route that one pass the catch can up to the vacuum port of the carb, and then just leave the breather on the drivers side to allow air into the cc?

 

[slepr1]

For a quick fix, just get a pcv valve with appropriate grommet for your v.c., attach hose to the outlet on the pcv and run the hose to the proper vacuum port on the carb. Leave your breather on the drivers side to allow air into the cc. This will satisfy the requirement for your import inspections and will take 10 minutes to do.

After inspection take the time to find locations for catch cans (if you so desire), nice fittings, ect. I have a catch can on my 440 for the vent intake side. I have yet to get one for the pcv side as I'm lacking space on that side to mount the can. In the mean time I removed the pcv guts just leaving an empty pcv case. Any and all blowby will be sucked into my manifold and will eventually cause issues (I better get on that).

Many people think that the v.c. breather filter is suppose to filter out blowby gases...wrong. Its purpose is to filter air going INTO the crankcase. If your crankcase ventilation is working correctly, air will be drawn into the v.c. breather and exit through the pcv and into the bottom of the carb to be recirculated, thus your requirement to have "re-circulating crankcase ventilation system". Most people don't bother with catch cans or don't need them. After reading the PCV Bible (the link in my last post), I understood why oil was sometimes dripping from the v.c. breather.

 

[Dreadl0ck]

Thanks

I had a supercharged gen 3 hemi in my last car, and boy was I happy that I had a catch can!

 

[Dreadl0ck]

So. I ordered a PCV and a grommet, installed that on the passenger side valve cover, routed a 3/8 hose to the PCV vacuum port on the back side of my holley double pumper and rolled to inspection with a breather on the drivers side valve cover. Guess what? THEY FAILED ME since it's not a closed loop. I asked them what the difference was between having the filter on the valve cover compared to a hose from the valve cover to the air box - but he couldn't answer. I need a hose - else car will not pass.

I hate this country. They allow a 440 cu engine with headers and flow master 40s and I can run w/o winter tires in the winter but they fail this? Don't know what to do now really except buying a new breather with a hose connector and fake it to the air box.

 

[bigmanjbmopar]

http://paceperformance.com/i-6106750-trans-dapt-performance-products-twist-in-pcv-breather-4999.html

 

[moparmarks]

Doesn't really matter which side the PCV valve goes on, just need one. They are on the drivers side from the factory.

 

[bigmanjbmopar]

You don't need one it's based on your engine config, I don't run one anymore due to excessive plug fouling, and no its not a engine problem! if the engine is a high horse power one then don't waste your time, if you need if for smog laws at an inspection them put one on tap it to the carb pvc port the take it off run happy through the lights

No PVC

 

[Dreadl0ck]

I'm going to use a pcv on one valve cover and plug on the other for inspections - then just go back to PCV + breather after inspection. Bigman - I love your engine bay. Really clean. I think I'm going to steal some ideas from you.

 

[66chargerpat]

Use this cap Trans Dapt#969-4806s cap Or one similar. You then hook some hose from the cap to a port on the bottom of the air filter.If it doesn't have a port under the air filter, make one.