crankcase overfilling

[quk@sievers.com (Phil Payne)]

In message <970331081353_-1938285762@emout06.mail.aol.com> Sdbigelow@aol.com writes:

> And then Phil wrote
> You get "piston slap" - when a piston heading downwards hits the surface of
> the 
> oil in the sump.  

> The crankshaft will be hitting the oil way before the piston, and will whip
> it into a huge froth like an egg beater in a pint of bitter! Resulting foam
> will go everywhere it's not suppose to i.e. cylinder walls in great quantity.

Don't think "static", think "dynamic".  Like a heavy swell in an ocean - every 
now and then a piston will meet a large oil mass.  If the sump were full enough 
for every piston to meet the surface every time, the engine probably wouldn't 
even turn.
 
The froth is a real issue, but not as serious as "slap".  If you've ever driven 
a car like this, you'll know how suddent the power loss is - it's like hitting 
an ur-quattro fuel pump cut-out that doesn't reset itself for five to ten 
seconds.

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club