Thanks for the info. I have read about most of those things but recalling
them all at the point of need is the hardest to do.
Now according to my shop manual I have a 63 but some other sources say
it's
a 64 do you or any one else have first hand experience with 63/64 OHV
sixes?
When was the actual change in piston types, the side valve cover PCV setup
from 63 to 64 style, the crank counter weight change, etc..? Were all done
at the same time with the change in engine numbering or did the changes
happen gradually like the Avanti changes?
Wiz.
<keith_kichefski@[EMAIL PROTECTED]
> wrote in message
news:e5c7902d-2539-4167-96a5-447ae97dab6d@[EMAIL PROTECTED]
> On the '64 engine, the piston rings were unique to that year. The top
> compression ring is thinner, than on prior years. Also, be extra
> careful if you are considering re-using the pistons. The slipper-
> skirted types used in '63 & '64 tend to crack in the skirt radius.
> The skirted pistons were supposed to rock less in the bore than the
> '62 and prior, thus reducing piston slap. When the slipper-skirts
> crack off, the pistons can cock in the bore damaging the cylinder.
> While you mentioned the tops of the pistons were clean of carbon,
> study the oil drain back holes behind the oil ring. When those holes
> plugged up with carbon, is when those engines began to burn oil. From
> my experience this happened right around 50,000 miles. Wear was
> minimal at that point.
> Inspect the head for cracks, especially between the valves. This was
> common concern on all OHV sixes. Valve burning, usually came first,
> which lead to isolated hot spots on the valve seats. Excess carbon as
> a result of oil burning, was usually the cause of the problem.
> The Carter RBS carburetor tended to run both rich and lean at various
> times, causing the engine to load up and at other times produce a lean
> backfire through the carburetor. When they tend to run rich, it is
> usually due to a damaged choke-stove, which is filled with carbon.
> The carbon comes from a cracked heat tube inside the exhaust
> manifold. The tubes commonly crack at one of the dimples in the tube
> itself.
> The '64 aircleaner will not fit earlier carbs, such as a Carter AS, so
> it is best to deal with it as-is. Earlier tall aircleaners on their
> carburetors, sometimes will not clear the hood when used on a '64.
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