[V8] Engine rebuild options

Bastian Preindl bastian at preindl.net
Wed Aug 27 00:33:52 PDT 2008


> I, for one, know of several PT V8's that were replaced for very 
> excessive oil consumption. In the realm of a quart for every 500 miles 
> or less. And, I know of one right now that uses oil in the quart/400 
> miles (Hi Ingo). So, oil consumption is not only an ABH problem.

well, the PT engines may also take more oil in the years (I talk about 1 
or 1,5 litres on 1000 km) but it usually helps to overhaul the heads 
(whereby mainly the valve stem seal is worn out)
and it lowers oil consumption quite reliably and significantly. Doing 
the same on an ABH (and we're talking about amounts >3l/1000km, which we 
had on dozens, if not hundred machines in the forum over the years, not 
directly connected to the mileage) usually doesn't help a lot - the 
consumption remains, whereby the compression is perfect. The assumption 
that the reason for this are problems with the cylinder coating is a 
consequence - whereas somebody came up with the NiKaSil theory (stated 
as a fact, sincerely). So if it's not about NiKaSil, I wonder what's the 
reason and why the ABH, mainly the older ones, take significantly more 
oil than the PTs. There has to be a reason.

If it's about overheating, what I personally experienced also (I had 
once an early '92 ABH with 240tkm on the engine and it significantly 
raised the oil consumption (well, from 1,5 to 2,5 or even more) after it 
overheated once due to a fluid leakage in mid summer) but didn't 
interconnect at that time, what engine parts are impacted by the 
overheating and how can it be repaired?


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