[200q20v] Audi 20V Turbo Crankcase Breather System Tuning

[Brett Dikeman]

At 10:43 AM +0200 11/1/00, tommy.arnberg at nokia.com wrote:
>Hello  !
>
>THE BIGGEST PROBLEM IS THAT WITH HIGH
>BOOST THE CRANKCASE OIL/AIR MIXTURE FLOW GETS INTO THE
>INLET VALVES AND STICKS TO THE VALVE SURFACE
>AND AFTER LONGER HARD USE THE INLET VALVES ARE PROBABLY NOT
>94% TO 97% TIGHT ANY MORE !



>STE 5122  $ 95.79

So sounds like a motovac treatment, or top-cylinder-soak-in-cleaner 
treatment (such as the mopar stuff) would help with builtup gunk, and 
installation of something like the STE5122 would take care of the 
oil.  At $95, that's an "okay" solution i guess.  The main problem 
is...it looks like a sizeable widget.  Where would it get placed?  I 
can only think of room in back of the engine, maybe mounted where the 
washer bottle used to be in the 5k's...but there is a fair amount of 
heat from the exhaust in that area that might be torture for the 
hoses(then again, the windshield bottle did just fine; a little 
aluminium shielding...)

This has got to be the source of the oil on the MAF sensors...and I 
agree, there is a lot of oil which gets into the IC.  I cleaned mine 
out completely with dish soap solution and the water came out black 
even after a second swish of clean water+soap.

This is what a leakdown test is for, yes?  Maybe if we find there is 
a correlation among several owners(accounting for how long they've 
had the chip, and how hard they admit they drive their cars :-), 
between "chipped or not" and leakdown test results...and maybe we can 
determine if the problem can be corrected with cleaning?  It might be 
obvious, it might be semi-obvious, or it just might not make any 
sense at all.

Anyway, this seemed to be entering into Phil P. territory, so I 
though I'd cc him on this one to see if he has any input on the 
subject.  If $100 keeps me from coating everything from the turbo to 
the tailpipe with carbon and yields better performance+engine life as 
a result, I find it hard to argue.

Brett
PS:removed bira-brakes, this isn't appropriate for their list, really...
-- 
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Brett Dikeman				Systems Engineer
ProAct Technologies Corporation		914-872-8043
(formerly CFN[formerly iClick, Inc])		914-872-8100(fax)
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