[Healeys] PCV valve installation

Wed Apr 28 14:52:06 MDT 2021

 "must it be blocked off in order to create the vacuum sought?"
That's what I did on my yet to be tested system using a brass plug with an
"O" ring on it.
[image: image.png]

Stay tuned for results :-)

M

On Tue, Apr 27, 2021 at 8:25 PM Michael Oritt via Healeys <
healeys at autox.team.net> wrote:

> Though I am not that familiar with Healey 6 engines I do not believe they
> have the block vent pipe fitted to 100's which has positive pressure coming
> out of it with engine running.
> How does the presence of such a pipe affect the design of a PCV system
> such as that illustrated--must it be blocked off in order to create the
> vacuum sought?
>
> Best--Michael Oritt
>
>
> On Tue, Apr 27, 2021 at 7:33 PM Roger Grace via Healeys <
> healeys at autox.team.net> wrote:
>
>> I am with Harold on this one. In theory, with substantial vacuum holding
>> in the CC you would not move any of the accumulated gasses and moisture
>> from the CC. Would be interested to hear if anyone has actually measured
>> the CC vacuum after the plugging and soldering of all the orifices ?
>> Particularly at idle when the vacuum is high - what does the PCV valve
>> regulate it to ? My car is about 17/18 ins Hg at idle. Would also be
>> interesting to look for oil at the system vacuum inlet pipe after a few
>> miles.
>> Just wondering...
>> rg
>>
>>
>>
>>
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>>
>> On Tue, Apr 27, 2021 at 8:42 AM Harold Manifold via Healeys <
>> healeys at autox.team.net> wrote:
>>
>>> The V in PCV is for ventilation. There should be a way for fresh air to
>>> get into the engine. In addition to creating a slight vacuum inside the
>>> engine ideally the blow by gases that accumulate in the bottom of the block
>>> and contaminate the engine oil should be replaced with clear air.
>>>
>>>
>>>
>>> [image: Foxbody PCV Valve Replacement – Fox Body Project]
>>>
>>>
>>>
>>> Harold
>>>
>>>
>>>
>>> *From: *Bob Begani via Healeys <healeys at autox.team.net>
>>> *Sent: *Tuesday, April 27, 2021 6:06 AM
>>> *To: *Bob Haskell <rchaskell at earthlink.net>; Healey List
>>> <healeys at autox.team.net>
>>> *Subject: *Re: [Healeys] PCV valve installation
>>>
>>>
>>>
>>> Bob:
>>>
>>>
>>>
>>> Let me know how your installation works with the hole in the oil fill
>>> cap soldered.  No doubt, the rest of the engine is has no breather inlets
>>> such as the valve cover?  The reason I ask is I did not solder or seal the
>>> oil fill cap and my aluminum valve cover has  a vent on the side into which
>>> I stuffed a piece of oiled 3m sanding pad.  The reason was that in the
>>> early days of PCV valves on engines the car makers were creating a breather
>>> so fresh air could circulate in the engine and some articles indicated it
>>> was desirable to keep air flowing to the crankcase.
>>>
>>>
>>>
>>> Maybe some of the other listeners who have been using a PVC system
>>> sealed could comment on the operation.  Currently on regular 25-mile drives
>>> at no more than 60 mph the drips under the bell housing weep hole after the
>>> ride are limited to a spot the size of a quarter in the can underneath.
>>> Next time travel on I-75 for 50 miles at higher speeds I will see if the
>>> amount of oil increases.  If it does I may seal vent to see what happens.
>>>
>>>
>>>
>>> Bob Begani
>>>
>>>
>>>
>>> -----Original Message-----
>>>
>>> From: Bob Haskell <rchaskell at earthlink.net>
>>>
>>> Sent: Monday, April 26, 2021 8:23 PM
>>>
>>> To: rfbegani at gmail.com; 'Healey List' <healeys at autox.team.net>
>>>
>>> Subject: Re: [Healeys] PCV valve installation
>>>
>>>
>>>
>>> Bob,
>>>
>>>
>>>
>>> Thanks for the info.  I've got mine installed, but haven't driven the
>>> car yet - rebuilding a LCS pump for it.  I machined a 5/8"-20 - 3/8"
>>>
>>> barb fitting to screw into the front manifold. Added six flats for a
>>> wrench - Whitworth so I can be annoyed with myself at some future date.
>>>
>>> To go from the 5/8" diameter on the valve cover tee to the 1/2" diameter
>>> inlet on the PCV valve, I shaved the ID of a 5/8" hose and the OD of a 1/2"
>>> hose on the lathe and glued them together with rubber cement.  3/8"
>>>
>>> hose connects the PVC valve to the manifold fitting.  Added hose clamps
>>> at each connection and soldered the hole in the oil fill cap.
>>>
>>>
>>>
>>> Cheers,
>>>
>>>
>>>
>>> Bob Haskell
>>>
>>> Austin Healey 3000 BN7/BT7 registrar
>>>
>>>
>>>
>>> On 4/26/21 6:00 PM, rfbegani at gmail.com wrote:
>>>
>>> >
>>>
>>> > Bob:
>>>
>>> >
>>>
>>> > I have completed the PCV valve installation by using a 3 inch piece of
>>>
>>> > the 5/8” hose on the manifold side and inserting a 5/16 “ heater hose
>>>
>>> > into it with a hose clamp.    Then the 5/16” hose attaches a 1/8” x ¼”
>>>
>>> > brass fitting with a hose clamp from the parts store I installed into
>>>
>>> > the small opening on the intake manifold to the right of the large
>>>
>>> > opening for the brake booster.  No leakage and strong negative
>>>
>>> > pressure have reduced my oil leaks into the bell housing and the
>>>
>>> > clutch dramatically.
>>>
>>> >
>>>
>>> > Bob Begani
>>>
>>> >
>>>
>>> > *From:* Healeys <healeys-bounces at autox.team.net> *On Behalf Of *Bob
>>>
>>> > Haskell
>>>
>>> > *Sent:* Friday, April 9, 2021 3:10 PM
>>>
>>> > *To:* Healey List <healeys at autox.team.net>
>>>
>>> > *Subject:* [Healeys] PCV valve installation
>>>
>>> >
>>>
>>> > Listers,
>>>
>>> >
>>>
>>> > Attempting to install a PCV valve on our tri-carb engine per Norm
>>>
>>> > Nock's Tech Tip (page 98).  Made an adapter (5/8"-18 to 3/8" barb)
>>>
>>> > that replaces the plug in the front inlet manifold.  3/8" hose to the
>>>
>>> > PCV valve.  Two questions:
>>>
>>> >
>>>
>>> > 1) Does the PCV valve need to be orientated in a particular way?
>>>
>>> > Norm's diagram shows it horizontal and I have seen them on non-Healeys
>>>
>>> > vertical (engine side down).
>>>
>>> >
>>>
>>> > 2) The valve cover tee is 5/8" diameter, the engine side of the PCV
>>>
>>> > valve is 1/2".  Anyone know of a short hose with different diameters
>>>
>>> > on each end?
>>>
>>> >
>>>
>>> > Thanks.
>>>
>>> >
>>>
>>> > Cheers,
>>>
>>> > Bob Haskell
>>>
>>> > Austin Healey 3000 BN7/BT7 registrar
>>>
>>>
>>>
>>>
>>>
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