<VV> [fastvair] Never saw This Before
corvairs at pacifier.com
Mon Oct 7 14:57:49 EDT 2013
Brian - Half flange main bearings were used on a lot of Corvairs from
the factory. Superficial logic says that manual transmission cars and
performance cars should always have full flange bearings. But we've torn
down A LOT of Corvair motors the past 40 years and I cannot think of a
single one that had half flange bearings that showed any unusual or
excessive flange wear. This was regardless of the type of transmission used.
The half flange main bearing was part of the "fix" GM used in
conjunction with the .0005 #4 main bearing change. The odd #4 bearing
change stayed through to the end of production but no one seems to know
the exact extent of the use of 1/2 flange #1 position bearings.
They are not at all unusual and we used to sell a lot of them. If I had
a set right now I would not hesitate to use them.
On 10/6/2013 3:28 PM, Brian 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?
> This list is for racing/modifying our Corvairs,and to buy/sell parts.
> homepage http://groups.yahoo.com/group/fastvair "sign in" at upper
> right of page for archives, edit your membership(digest,unsubscribe)
> Post message: fastvair at yahoogroups.com
> Your email settings: Individual Email|Traditional
> Change settings via the Web
> (Yahoo! ID required)
> Change settings via email: Switch delivery to Daily Digest
> <mailto:fastvair-digest at yahoogroups.com?subject=Email%20Delivery:%20Digest>
> | Switch to Fully Featured
> <mailto:fastvair-fullfeatured at yahoogroups.com?subject=Change%20Delivery%20Format:%20Fully%20Featured>
> Visit Your Group
> <http://info.yahoo.com/legal/us/yahoo/utos/terms/> | Unsubscribe
> <mailto:fastvair-unsubscribe at yahoogroups.com?subject=Unsubscribe>
> *Do THIS before eating carbs (every time)*
> 1 EASY tip to increase fat-burning, lower blood sugar & decrease fat
More information about the VirtualVairs