I have received several conversations in the last few months asking me about how in installed the PCV valve on my Old Black Deuce 4 door sedan. I'm sure this can be done other ways it's just what worked in me. In my case I used a electric fuel pump and used a block off plate and added a PCV valve. I had mine set up were the PCV draws vacuum from a fitting in the intake just below the carburetor,you could pull vacuum from the carburetor providing you have a large port. The image below is the block off plate and PCV valve. This photo shows where the vacuum was pulled from the intake just below the carburetor. The road draft tube was eliminated and a tube with a breather was added,remove the breather cap to add oil. I hope this helps. HRP
The one problem with the way you set your pcv on an 8BA is the intake baffle and gasket layout which may impede full crankcase ventilation. The vertical stand pipe located at the right front p***es most of the vapors coming up from the crank case, and is where the pcv will do a better job. Simply install the pcv in place of the road draft tube and block off the fuel pump mount.
Like I said in he original post this is not the only way to do this but I never had a problem and it worked well for me for over 16,000 miles. HRP
My '32 truck had an 59ab which has a breather in the p***enger side front corner of the oil pan. I ran a hose from there to the carb or intake (forget which). It really helped the blow by problem until I rebuilt the engine.
On my 8BA I did an internal PVC ( Ed ) as I was running a mech fuel pump. Was real simple, pull the tube that rises from the front of the crank case out and lop off an inch or two before installing the standard SBC rubber grommet (perfect fit as if it were meant to be) and PCV valve. Then one just has to drill and tap a small hole into the bottom of their intake and thread in a br*** ****** (I used a 1/4" ******) and run a hose between the PCV and ******. Cut down on crank case fumes and oily residue out the stock filler drastically.
I do hope everyone realizes that this post is a sincere attempt to share how I have addressed adding a PVC valve to their Flatheads. I also hope they can overlook my faux pas. HRP
PVC or PCV, I just enjoyed the irony of looking for a place to put the valve that usually finds its way onto a valve cover. Good luck finding the valve covers on flatheads!
Ah easy mistake to make. just a typo and if thats the biggest issue of the day you have life made. being a critic is the easiest thing in the world
Good fix, good post HRP. It would be nice to see more ways of doing it all in one thread. I've seen many killer ideas on this subject on the HAMB over the years. I didn't use one but that doesn't mean I wont some day.
I am running an Offy 4bbl intake on a 59a. I drilled a hole in the unused boss for the oil filler tube, blocked off the front vent on the pan, and added a modern filter to the oil cap tube. The PCV is a common SBC type and is plumbed into a hole below the carb. Works fine.
I hooked up a PCV where the road draft tube usually is. I used a vacuum port on the side of my intake. I also blocked off the oil fill tube due to interference with the upper rad hose/thermostat housing on the heads I used). I am running an electric fuel pump so the fuel pump, rod was removed and I made up a breather ***embly that pops off to add oil when needed. Seems to be working for me.
That's the normal way to do it. Thing about them (pcv's) is you want the air to be ****ed through the engine via the crankcase, not just from one end of the lifter valley to the other.
PCV valves were sized for engine requirements. None of you are saying which one you are using. Since there are no overhead valve cover areas to worry about I'm guess you guys sized them for a 4 cylinder of some kind.
I just hooked up a PCV on my beater (non flat head though) looks like all my oil leak issues disappeared
LOL ED you cannot imagine how many years I have been getting that one wrong, uh in both directions, PCV when I'm buying plumbing supplies and PVC when I am talking about crank cases.
Yep I did the hidden pcv valve as well - using a Toyota tarago PCV valve fitted into a core plug which is then fitted into what was previously the downdraft tube then hooked it up with flexible high temp line under the manifold so you won't see it. 8) The piece of pipe that the PCV is fitted to is a shortened (but stock piece of 1 1/4 inch pipe) that presses into a stock standard hole towards the front of the valley in the 8ba engine. The idea is that fresh air comes in to the engine via a breather, goes down below the valley and into the lower crank case then comes up at the front of the engine and out through a breather (the out breather in the stock engine is in effect a 1 1/4 inch piece of steel pipe that goes straight into a road draft tube). In effect the pcv mod gets rid of the road draft tube (which I no longer have as I fitted an earlier inlet manifold) and plumbs the pcv into the hole that was previously fed the road draft tube (but under the manifold).
There was a post with this same method in another flathead PCV thread only a few days ago. Here: https://www.jalopyjournal.com/forum/threads/pcv-on-an-8ba-flathead.284377/page-2#post-12138296
Old post but a good one! Acme30, this is what I'm planing to do. Is that a multi carb setup? Thanks, Carl
Flatheads ****.....a PCV valve should work real good! Probably should add this: ****-squeeze-bang-blow
Hi Carl Short answer is yes multi carb setup. Here are the pics of the motor with this set up Still a work in progress a bit more paint and some detailing and the engine will be done 8)
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