'90 Coupe Q. Blue Smoke, Help!

[quk@sievers.com (Phil Payne)]

In message <333ADB0C.621E@gsmai.com> Glenn Lawton writes:

> Both Phil and I agree that blue smoke at startup = valve guide seals
> but _developing_ blue smoke doesn't sound like that to me.

More consideration leads me to suggest something pretty nasty - oval bores.
 
Is this perhaps an engine that's regularly been driven hard when cold?
 
I5 pistons are actually oval when cold - heavy wear at this point results in 
oval bores that leak no oil when the engine is cold, but leak progressively 
more when the engine warms up and the pistons become round.  The high usage (1 
pint per 1,000 miles) suggests the same thing - an engine that's been abused 
when cold.
 
If this is the case, then the solution is expensive - tear-down and rebore for 
oversize pistons.  The question of oversize piston availability then comes into 
play - there are none (_NONE_!) available for the MB engine, for instance.
 
If this is indeed the reason - what else might need doing?  The crankshaft 
journals?  

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