<VV> Teardown III

[Stephen Upham]

Uhh . .  hate to burst your bubble on this one, but this isn't the  
crank that was in the engine when it failed.  That was the original  
crank from WR and was ground to .030 by a machine shop before  
installation.  It is now scrap.    The crank in question, the one to be  
installed, is from a 140, standard clearance and hasn't been turned  
over in the engine.  I've installed it and have done an oil pressure  
check, but the most revolutions it has seen is from the installation of  
the rods and the adjusting (cold) of the valves.  I've noticed a  
FEW,TINY scratches in the journals and what looks like pitting in one  
of the journals (negligible to a pass of a finger nail).  I suppose I  
need to have this checked out by a machine shop (will they sell me on  
an unnecessary turning? probably - and the subsequent purchasing of new  
bearing$ - soon to have a 10 grand [expenses], 3 grand car [value]) or  
to have my club benefactor look at it before rebuild IV.  Probably the  
latter, as I trust his judgment over a shop's.

The engine is the only thing left to do before getting some road time.

Hopefully ready to roll by the 50th anniversary.

Stephen Upham
Dallas, Texas
Corvairium //

Mid prod. #18732 -1965 Monza sedan 110

checkDate: Fri, 16 Jun 2006 13:21:35 EDT
From: TimogensTurbo at aol.com
Subject: Re: <VV> Polishing bearing journals
To: virtualvairs at corvair.org
Message-ID: <24a.c74e354.31c4429f at aol.com>
Content-Type: text/plain; charset="US-ASCII"

In a message dated 6/16/2006 9:56:39 AM Pacific Daylight Time,
contactsmu at sbcglobal.net writes:

> I need a quick answer.  I remember the man I bought the crank from
> polishing the surface of the bearing journals with a fine grit
> sandpaper in order to polish them.  What #grit would be appropriate for
> that.
> Stephen  U
>
------------------------------------------------------------------------ 
------
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Now you tells us!

Quick answer?     THATS the reason for your failure!!!!!!

Even I won't stoop that cheap.....  Bearing Journals must be polished  
with a
WET STONE!! [  use a crank shop ]

Anything less and you're asking for pre-mature failure...

You can use a 600-1000 grit  Emorycloth to clean off  rust /
residue.......but never to polish....never dry..

The 1st build..if done this way.....with tight bearing clearances...thin
oil.......3000+  rpm while going down the highway with very few  
miles.......Even I
wouldn't touch that with YOURS!!!  LOL!!

Matt Nall
stocker, mod, v8, turbo, boat, Sandcar
ALLVAIR!
Timogen was a softy!