[V8] Spectral analysis V8 ABH and PT blocks

[Dave Saad]

That fella would be me (with help and guidance from pasha) and my oil  
problems seem to be gone.  I only say "seem" because just about the  
time I finished the ring/head job, I got laid off and don't drive the  
V8 much anymore.  I doubt I have 5K miles on it in the last two years,  
but when I do drive it, it goes like crazy.  Very noticeable increase  
in power, no starting issues (like the old start it cold, shut it off  
right away and it won't restart), no oil consumption to speak of,   
idles nice and smooth and in general just purrs like a big blue kitty.
The thing that finally got me to do something (beside the head gasket  
leaking coolant) was the deceleration thing - coming down from my  
friends house in 2nd gear, the engine would die at the stop sign at  
the bottom of the hill and leave me in a thick cloud of blue smoke.

In my case, I was going to either fix my motor or find a new one but I  
really wanted to fix mine.  I was pleasantly surprised to find  
cylinders and bores in good shape so I took a chance and rebuilt using  
new rings (Teves) and the old rod bearings.  You can not get new  
bearings AFAIK, so  I did not remove the main bearings/caps and was  
very careful with the rod bearings. (where ME in this case was the  
machine shop guy who thought I was nuts but did exactly what I asked  
him to anyway).
The only issue I had was a lifter started clacking really bad - and  
the machinist told me to put some ATF in the crankcase.  I tried it,  
and the noise went away almost immediately and has not come back.
btw, I just tried this on a friends old (1967 I think) Jeep Wagoneer  
which came with a huge Buick V8.  It sat for a long time and was  
making all sorts of racket when I got it started.  We put a quart of  
ATF in the oil and the lifter noise went away.

So - for any of you who really want to deal with the oil problems, and  
assuming your motor still has good compression, new rings and a valve  
job will most likely give you a new motor.

Dave

On Dec 11, 2009, at 7:34 AM, NIck Miller wrote:

> What ever happened to the Fella who changed piston rings and managed  
> to
> reduce his oil consumption significantly?  Almost always the two key
> factors, unless the vehicle has a turbo charger(kommpressor), are  
> either
> valve seals or piston rings.  It stands to reason that since this is  
> one of
> Audi's first aluminum blocks, and they used an incredibly hard  
> material for
> the block, that they may have not realized the rings wouldn't hold  
> up.  Even
> in my Miata, the factory ductile iron rings are garbage and when  
> running a
> turbo you get blowby and high oil consumption.
>
> My question would be how the rings, particularly the oil control  
> ring,  are
> doing after high mileage.   As well, you can get good compression and
> terrible oil consumption through rings at the same time.  Even you  
> can get
> good <5% leak down numbers and still have oil consumption.
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