Author Topic: PCV and Oil Cap Setup  (Read 6996 times)

heavy

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PCV and Oil Cap Setup
« on: September 10, 2009, 03:39:39 PM »
Hi All,

I am showing my mechanical prowess with this post, but want to make sure I get it right.  When I bought my '66 the guy had two cheap breather style chrome oil caps on each valve cover.  The passenger side has a "D"shaped grommet, and the driver side is a twist on.  The problem I have is that these caps are leaking oil through the breathing part of the cap.  They have some cheap foam that the oil has saturated and drips down from there when you get on the accelerator.

I would like to get back to the original setup (more importantly just stop the oil from dripping on my new tri-y's).  From looking at the available parts on NPD (page 111 of their online catalog), I think I need the pcv hose to run from the PCV/d-shaped grommet (passenger side) to the Hipo aircleaner I have on there.  Then on the driver side just a non-emmission twist on cap?

I was reading an earlier post with a guy having issues pushing oil into the carb area, and he suspected it was because he had everything sealed on the other side of the engine and it was creating too much pressure causing oil to get to his carburetor???

Thanks for the help.

Micah


Jeff1967

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Re: PCV and Oil Cap Setup
« Reply #1 on: September 10, 2009, 04:42:48 PM »
Here is a picture of my stock 67' 289 maybe it will help?

Jeff

Soaring

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Re: PCV and Oil Cap Setup
« Reply #2 on: September 10, 2009, 06:23:50 PM »
On my 65 289, the PCV hose runs from the passenger side to the spacer below my carb.  The breather cap is on the drivers side with some mesh metal inside it.  That's the way your 66 was first built, so maybe you should try to return to that set-up.

Jeff73Mach1

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Re: PCV and Oil Cap Setup
« Reply #3 on: September 10, 2009, 08:07:55 PM »
If your headers are set up for it, there is a neat way to run a vent line to each header and it pulls all the fumes out and into the exhaust without having it dirty up the inside of the engine.  Less environmentally friendly, but a nice set up. 


if not, I'd suggest a proper PCV run to under the carburator or to a fitting on the back of the intake and either just a breather cap on the other side or a breather cap with a vent line to the underside of the air cleaner unless you are going for a stock appearance, then just use a breather cap.

Venting and using PCV will stop the bulk if not all of your oil drips.

and it was probably my post that talked about the pressure blowing my dipstick out from using a non vented cap on the driver's side LOL  A vented cap took care of it just fine.

zray

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Re: PCV and Oil Cap Setup
« Reply #4 on: September 12, 2009, 09:28:24 AM »
On my 65 289, the PCV hose runs from the passenger side to the spacer below my carb.  The breather cap is on the drivers side with some mesh metal inside it.  That's the way your 66 was first built, so maybe you should try to return to that set-up.

that would be your best bet. Try to go back to stock first. If that doesn't work for you, then try the "exotic" remedies.

Z. Ray

heavy

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Re: PCV and Oil Cap Setup
« Reply #5 on: September 22, 2009, 08:47:43 PM »
Got the parts in from NPD.  I added the conversion to the push on oil cap, and went with the vented system to the air cleaner.  I had to fabricate the PCV hose to get it to the front of the Edelbrock carb that I have, but everything works great.  No more oil leaking from the PCV or oil cap!

Thanks for the help.  One more problem solved.

 

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