<VV> Engine building: extra holes under oil pan?

[Mel Francis]

Thanks to Dave Newell's excellent Communique article that detailed the
engine's line-production, we can see that the first stage of engine assembly
was done with this case-half laid on it's side, while attached to a bracket
that was mounted to the engine assembly line. These holes held the case-
half to the bracket as it moved between assembly stations.

Once the case half was fully loaded with the crank and cam, the other side
of the case was added and everything torqued up. The production bracket
had a hinge in it, so that the assembled case halves could then be rotated
90 degrees, to horizontal, for the rest of the engine assembly to proceed.

A hinging assembly bracket, such as the one used in production would
actually be very useful, even these days, to aid in bench assembly,
since the crankcase cannot be mounted on a regular engine stand until
the bellhousing is in place.

Mel


----- Original Message ----- 
From: "Les" <corvair at mts.net>
To: "Mark Durham" <62vair at gmail.com>
Cc: <virtualvairs at corvair.org>
Sent: Sunday, January 31, 2010 12:48 PM
Subject: Re: <VV> Engine building: extra holes under oil pan?


> That's what I was thinking, I can't see how they are of any use currently.
>
> On 1/31/2010 10:11 AM, Mark Durham wrote:
>> Les, these may be jig holes for the original machining process for the
>> cases. I would have to look, (didn't pay any attention to them when I
>> had my pan off this last year, but they were there) but I think they
>> are blind, don't go anywhere. Mark Durham
>>
>> On Sat, Jan 30, 2010 at 7:23 PM, Les <corvair at mts.net
>> <mailto:corvair at mts.net>> wrote:
>>
>>     I can't see that these two holes (see attached photo) serve any 
>> useful
>>     purpose. They LOOK like blind threaded holes. The oil pan doesn't
>>     block
>>     them. Ignore them?
>>
>>     Les
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>
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