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@earthlink.net>
Sent: Monday, April 26, 2021 8:23 PM
To: rfbegani@gmail.com; 'Healey List' <healeys@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@gmail.com wrote:
>
> Bob:
>
> I have completed the PCV valve installation by using a 3 inch piece of
> the 5/8â?? hose on the manifold side and inserting a 5/16 â?? heater hose
> into it with a hose clamp. Then the 5/16â?? hose attaches a 1/8â?? x ¼â??
> 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@autox.team.net> *On Behalf Of *Bob
> Haskell
> *Sent:* Friday, April 9, 2021 3:10 PM
> *To:* Healey List <healeys@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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