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Re: [Mgs] MGB valve cover/crankcase venting

To: "Rick Lindsay" <rolindsay@yahoo.com>, "dannyvarnado"
Subject: Re: [Mgs] MGB valve cover/crankcase venting
From: "Paul Hunt" <paul.hunt1@blueyonder.co.uk>
Date: Sun, 13 Jan 2008 10:41:02 -0000
The gulp valve is used with the air pump to reduce back-firing on the 
overrun.  No air pump - no gulp valve.  Other than that the ventilation 
arrangements should be the same as before, unless you have removed the 
canister and other plumbing as well, in which case the suction side stays as 
before (PCV valve up to Oct 68, carb suction thereafter) and the inlet side 
uses either a vented oil filler cap and a sealed rocker cover vent, or the 
original oil filler cap and a filtered rocker cover vent.  having open pipes 
dangling down beside the engine goes back to the non-positive ventilation 
used before Feb64, which can result in dust and moisture being sucked into 
the crankcase, and condensation and corrosion.  If the engine and breather 
system are working properly there won't be any oily crap going into the 
engine.

PaulH.

----- Original Message ----- 
> I am presently doing a valve job on my '70 B (with the
> '65 engine) and as I reassemble the car I think I will
> reinstall the gulp valve ... 
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