<VV> Recruiting for Dollars (humor?) Cam Bearings, Proof is in the pudding

[Louis C. Armer,Jr.]

Sooooooo Are you proposing we have a Corvair Military branch 
connected with the motorpool
or Aviation hangar that will do our machine work for little $$$ 
.....................Now that's a thought
Civilian Corvair Patrol cadets.............FRIENDS join up now and 
Serve Your Marque........The few,
the greasy, the bloody ........THE VAIRDETS <GGG>

FrontMan
ULTRA Recruitment Division
WTBRT PR
Deckrug Enterprises Inc. Ltd. Esquire
DBA  EURO ROYAL ULTRA
Sandusky, Ontario
//////////////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////
>OK... so far I've not heard anyone mention this:
>...what about shaving something like .005 off each crankcase half 
>along the parting surfaces to shrink the crank/cam bores, then line bore?
>How far could you go with shaving the crankcase halves before 
>getting into trouble with the hardware that bolts to the crankcase 
>(bellhousing, front housing, top cover)?   I'd expect no issues with 
>the head/piston/cylinder fit since the actual difference would 
>likely end up ~.01 which is likely less than the production 
>tolerances for pistons to head in the first place.   There's also 
>enough slop in the bolt hole fit for the hardware to allow the 
>engine to go back together without attacking the holes with a rat tail file.
>If shaving .005 off each piece (.01 total) will get the tolerances 
>between cam and bore within specs, why not do it?
>Up through now, the issue seems to be an error/out of round bore of 
>~.01.   The above machine work should fix this much  error.   Not 
>cheap but it's gonna be less than welding/spraying the cam bores and 
>line boring.
>
>IMHO this is the reason for saving all those old low miles 
>crankcases stuck in the rafters of the garage, on shelves in the 
>barn, in corners of the basement gathering dust...
>
>If the first go-around lasted 30 or more years before wearing out 
>cam bores, wouldn't it be logical to expect at least half that much 
>more life out of a good-original within-spec crankcase?    And just 
>how many miles are typical Vair engines expected to endure these 
>days?   (except for Smitty, whose half-million mile engines don't 
>qualify on this logic)  ;)
>
>Smitty's situation is where that good original factory spec 
>crankcase in the rafters comes into play.
>
>You can either pay for the welding/machining or stash a couple of 
>good crankcases away for insurance.
>
>Sure the military fixes crankcases by welding and machining.   Those 
>guys get paid monthly and the rate never chances.   They do the work 
>all day long, same pay, same product, same facilities, it's what 
>they do.   They're in it because it's their MOS.
>
>The guy at Boob's Automotive Machine Inc is another matter.   He's 
>in it for the money and if he has little/no competition you're 
>either gonna pay, or do without... or back up your parts stash with 
>the stuff you will need to further the hobby pursuits.
>
>I have good crankcases stashed away; for me this is all moot.
>
>tony..
>//////////////////////////////////////////////////////////////////////////

CORSA Member
CORSA Tri-membership Chairman
Corvair Atlanta Member
Corvair Atlanta BOD
Corvanatics Member
SECC Member

1965 Corsa Coupe
1964  Greenbrier
1966 Monza Convertible
1966 WTBRT #112 xcrosser 1/2 owner
http://carmerjr.home.mindspring.com/