<VV> Never saw This Before

[Mark Durham]

Brian, that is all you can do. Maybe some blocks were machined differently
for some reason and they did the half flange to prevent it from being too
tight. Do check for that, my engine was at the inner limit with two flanged
halves in there.

Mark Durham
Hauser Idaho
62 coupe
Hauser Idaho

Sent from my Windows Phone
------------------------------
From: Brian
Sent: 10/7/2013 6:28
To: 62vair at gmail.com
Cc: fastvair at yahoogroups.com; VirtualVairs at corvair.org
Subject: Re: <VV> Never saw This Before

Yes, I is a correct 140 block. I fully intend to check the clearances using
full flanged bearings.  Thanks for the input.

---------- Original Message ----------
From: Mark Durham <62vair at gmail.com>
To: Brian <bmoneill at juno.com>
Cc: "fastvair at yahoogroups.com" <fastvair at yahoogroups.com>, Virtual Vairs <
VirtualVairs at corvair.org>
Subject: Re: <VV> Never saw This Before
Date: Sun, 6 Oct 2013 17:06:25 -0700

Brian, is the block correct for the 140? I pulled a set of main bearings
out of my 62 102 several years ago that was flanged on one side and not the
other. GM put some blocks together that way from the factory back in 62,
and I suppose those bearings could fit in any block if found on the
aftermarket. It did not seem to make a difference on operation, those mains
had 47 years and 69K miles on them and they we still new tolerances at all
four journals and on run out.

I was a bit nervous wondering why they did this when I installed a set with
full flanges on both sides, because was there a problem with the case? As
it happens, no,my clearances were within factory limits on runout there for
both halves.

Mark Durham
62 Monza 900 Coupe
Hauser Idaho



On Sun, Oct 6, 2013 at 3:28 PM, Brian <bmoneill at juno.com> wrote:

> I'm disassembling a 65 140 engine for a new club member.  He recently
> bought this CORSA convertible but it ran very poorly.  Inspection showed a
> dropped valve seat on #5. That was only the beginning of the issues.  The
> flywheel retaining ring was missing.  The pilot bushing was so worn, I
> thought it wasn't there.  Tons of blue and red silicone on every
> conceivable bolt. The real surprise came when I spilt the case.  In
> addition to a toasted cam, I found that only one half of the case had the
> correct flanged bearing.  The other half had a regular main bearing shell.
>  I can't identify the bearing.  No size markings, i.e. 'STD, .010, etc.
> Also can't identity the manufacturer.  The bearing are stamped "DAZ".
> Am I missing something here?  Has anyone ever seen this before?
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-- 
Mark Durham
Hauser, Idaho
62 Monza coupe Red/Red 4 speed


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