Help needed finding this leak - all in a panic ! - SOLVED

Garp · Post by **Garp** » Tue Feb 09, 16 7:39 pm

Steve wrote:Good point John....mine is big block

Yours is a BIG Block - mines a small block but set up like a big block (same as yours) ....is this not good ????

Steve · Post by **Steve** » Tue Feb 09, 16 7:44 pm

Let me have a look at the online manual for your car. Im sure there is a diagram that shows you how the pressure circulates around your engine to avoid any confussion....wait one caller

John · Post by **John** » Tue Feb 09, 16 7:49 pm

Garp wrote:
Steve wrote:Good point John....mine is big block

Yours is a BIG Block - mines a small block but set up like a big block (same as yours) ....is this not good ????

I believe yours to be correct but I`m afraid I think Steves is in fact the wrong way round....... Sorry Steve

Steve · Post by **Steve** » Tue Feb 09, 16 8:01 pm

Im doubting my memory now John....sorry gang....more digging reqd

Garp · Post by **Garp** » Tue Feb 09, 16 8:02 pm

Have just checked the "How to rebuild your Small block Mopar" and mine seems fine ( PCV passenger side ) - however it has raised a question....

As the PCV pulls gasses OFF the rocker; without having a "port" open on the drivers side rocker to pull clean air IN ( which I do not have ) is my setup, in fact, only half complete ?
I bought it like this but along with reading and all the good folks here, I'm starting to look objectively at the engine and make sure all is good.
A weird pressure imbalance in the engine could cause all sorts of bother I assume.
Any thoughts ? Apologies that this thread has morphed into something else - MODS feel free to step in.
Thanks as ever
Garp

Steve · Post by **Steve** » Tue Feb 09, 16 8:08 pm

mine is set up with the PCV on the pass side and breather/ filler on drivers side....1968 383 HiPo....

latil · Post by **latil** » Tue Feb 09, 16 8:13 pm

OK,my 426 has PCV on pass side and vent/oil filler on driver side. My 318 was the other way round. The 426 is totally oil tight everywhere.

Steve · Post by **Steve** » Tue Feb 09, 16 8:22 pm

....which matches the manual....

Steve · Post by **Steve** » Tue Feb 09, 16 8:24 pm

yeah Latil, that's the same as mine so you would think, as you say, the small block is the other way around

John · Post by **John** » Tue Feb 09, 16 8:27 pm

I`m glad I spotted this thread as now I believe mine to be the wrong way round lol

cadboy · Post by **cadboy** » Wed Feb 10, 16 6:52 am

My 340 has PCV on left (passenger) side and breather on the right.

MilesnMiles · Post by **MilesnMiles** » Wed Feb 10, 16 9:37 am

PCV on drivers side, breather on passenger side. 340. No smoke/fumes apparent.

Garp · Post by **Garp** » Wed Feb 10, 16 10:04 am

.... "can of worms" ......
Once someone has a definitive way and a bonafide reason why, I'm keeping as it ....
In anticipation ....

Steve · Post by **Steve** » Wed Feb 10, 16 10:36 am

For some reason, I cant get onto the online manual for your car on MyMopar....doh! The diagram on my last post is scanned from my Polara factory manual so there should be one for your engine in yours.

Im with you, sort that leak out as per Blues suggestion. While you are waiting for gaskets etc, have a dig around and see what you can find re the crankcase vent system.

Pete always tells me....'Google is your friend'.....wise words when it comes to our old cars

MilesnMiles · Post by **MilesnMiles** » Wed Feb 10, 16 10:45 am

From a thread on ForAbodies only quote

'The PCV system sucks the fumes that build up in the crank case and returns them back into the engine to be burnt. On a V engine the pcv valve is typically on one valve cover and a breather is on the other. The breather is there to allow air back in or you could create a vacuum in the crankcase. If you don't run a pcv valve at all you can build up pressure and force oil out past the seals or breather.'