[Healeys] PCV valve

Tue Apr 27 19:21:03 MDT 2021

This all sounds good, but I'm concerned about sludge build up...I
remember my '55 Ford with added rubber plug to the vent & adapted PCV
and takeoff on air cleaner. Under the rockers was a gooey mess after
some miles. I kinda like my Type 3 system as original on my BJ Healey
and the rocker shaft and rockers are clean not a sticky mess. Sure it
drips some oil from the bell, but don't all us oldies drip something?
Hank

	-----------------------------------------From: "Roger Grace via
Healeys" 
To: "Harold Manifold"
Cc: "Healey List"
Sent: Tuesday April 27 2021 4:34:02PM
Subject: Re: [Healeys] PCV valve installation

  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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 [3] 
 On Tue, Apr 27, 2021 at 8:42 AM Harold Manifold via Healeys  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. 

	Harold 

	 FROM: Bob Begani via Healeys
SENT: Tuesday, April 27, 2021 6:06 AM
TO: Bob Haskell; Healey List
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  

	Sent: Monday, April 26, 2021 8:23 PM 

	To: rfbegani at gmail.com; 'Healey List'  

	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  *On Behalf Of *Bob 

	> Haskell 

	> *Sent:* Friday, April 9, 2021 3:10 PM 

	> *To:* Healey List  

	> *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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