<VV> Valve adjustment

Wed Feb 14 16:29:22 EST 2018

#### It wasn’t my question! I just expressed surprise at the answer – took me a while to catch up. Hydraulic lifters are a bit new-fangled for me – as a Brit, I’m sure British cars of that era never had such things, not till much later. 
In the meantime I looked online for Corvair valve adjustment and found a lot of info that contradicted the ‘official’ settings, to the point that I would say there is a consensus that it is better to wind the rockers in less than specified by Chevrolet (quarter or half a turn, or maybe 3/4, seems to be the average recommendation). 
Although I have four running Corvairs, a (restored) 1960 Impala with a 348 and a 1961 Corvette with a 283 (undergoing restoration), I have never yet had to lay a spanner on a Chevy engine (other than to change a water pump), so please don’t think I’m offering advice or telling others what to do – I’m just reporting what I found on the internet. 

From: Seth Emerson 
Sent: Wednesday, February 14, 2018 8:12 PM
To: Hugo at aruncoaches.co.uk ; virtualvairs at corvair.org 
Subject: Valve adjustment

Hugo - You asked for a procedure. You got a procedure. Buy the shop manual. It is easily available (a little expensive through the mail for you) It will answer almost all of your questions. -Seth

-----Original Message-----
From: Hugo Miller via VirtualVairs <virtualvairs at corvair.org>
To: virtualvairs <virtualvairs at corvair.org>
Sent: Wed, Feb 14, 2018 5:50 am
Subject: Re: <VV> uneven vacuum

#### Ah, you are actually pushing against the spring loading in the lifters, 
are you not? That would make more sense of things.

-----Original Message----- 
From: Seth Emerson via VirtualVairs
Sent: Wednesday, February 14, 2018 2:10 AM
To: virtualvairs at corvair.org
Subject: Re: uneven vacuum

Joe - The cold adjustment involves setting the engine to TDC (at the end of 
the compression stroke) for each cylinder and go through the firing order. 
1-4-5-2-3-6. When the cylinder is at TDC, you back off the valve adjusters 
(both) until you can easily spin the pushrods between your fingers (Thumb 
and pointer). Then tighten them down until you take out the slack. The 
pushrod will be hard to turn. Then give it your pre-determined preload, 
often 1/2 a turn. Do both the intake and the exhaust, then move to the next 
cylinder. That is it.

-----Original Message-----
From: Matt Nall via VirtualVairs <virtualvairs at corvair.org>
To: virtualvairs <virtualvairs at corvair.org>
Sent: Tue, Feb 13, 2018 4:01 pm
Subject: Re: <VV> uneven vacuum

Please advise standard cold valve adjustment procedure.
========================================================

Same as a Chevy v8! Surely your neighbor knows how to do that?

Follow this link to Corvair Specific instructions for Pushrod tube O-ring 
replacement and valve adjust

http://corvaircenter.com/phorum/read.php?1,958473

Matt Nall
Charleston, Oregon
http://tinyurl.com/The-Corvair-Patio

http://tinyurl.com/Matts-Tech-Pages

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