[Healeys] PCV valve installation

[Perry Small]

Opinions on this are all over the place but there appears to be two types of currently used PCV valves, spring by loaded (to keep the plunger on its seat without vacuum and those that do not have a spring and use gravity to seat the plunger. Orientation is important to the non spring loaded type having the vacuum connection end up. Fir Spring loaded type orientation does not matter except the vacuum connection needs to be on the end of the valve that does not have the plunger seat. Just a matter of blowing on each end to see which way the plunger moves. 
P

Sent from my iPhone

> On Apr 9, 2021, at 3:15 PM, Bob Haskell <rchaskell at earthlink.net> wrote:
> 
>  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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