<VV> Carburetor idle vent functionality

[R JENNINGS]

I made this modification in the 1970's on my 1961 Corvair that I previously
had to remove the air cleaner and open the throttle to relieve the pressure
in order to start the car after driving and stopping for a short time.
After the modification I no longer had a problem.

DOES ANYONE HAVE A COPY OF THE SERVICE BULLETIN?  I HAVE LOST MY COPY OVER
THE YEARS.

Robert Jennings
1960 700 CLUB COUPE
VICE PRESIDENT - DACC
PRESIDENT - IRISH HILLS REGION, AACA
ADMINISTRATOR - "1960 CAVEMAN CORVAIR" Facebook group
ADMINISTRATOR - "CAVEMAN CORVAIRS, THE 1960 GROUP" CORSA special interest
chapter 003

-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of corvairduval at cox.net
Sent: Friday, March 01, 2013 10:59 AM
To: virtualvairs at corvair.org
Subject: Re: <VV> Carburetor idle vent functionality

I'm with Bob. The original GM tech tip (or whatever it was called) was for
the dealer mechanic to drill a hole in the side of the carb (at a certain
place) to help with hot starting. The hole was always open, so there were
complaints of added gas smell in the engine compartment. The idle vent
valve was incorporated in the carb redesign to seal the hole off idle. I
can attest that leaving the rubber valve off when rebuilding a carb results
in a carb that runs fine. The rubber does not affect carb performance. So
it should never be "more trouble than they are worth".

Frank DuVal 

Original Message:
-----------------
From:  BobHelt at aol.com
Date: Fri, 1 Mar 2013 09:54:51 -0500 (EST)
To: corvairgrymm at gmail.com, virtualvairs at corvair.org
Subject: Re: <VV> Carburetor idle vent functionality


Ray,
If you want my opinion, the idle vent is what separates the GOOD carbs from 
 the bad ones.
 
Regards,
Bob Helt
 
 
In a message dated 2/28/2013 9:44:13 P.M. US Mountain Standard Time,  
corvairgrymm at gmail.com writes:

If I  remember correctly these are to alleviate hard starting from "hot
soak"  when the engine is hot.  Do they work?  Are they sometimes  more
trouble than they are worth?