[DML] Re: PRV Oil Bypass Valve vs Filter Bypass Valve

["content22207" <brobertson@xxxxxxxxxxxx>]

PRV has an oil bypass channel drilled into it (remove the filter
screen and you can pull the valve out with needle nose pliers).
According to Volvo factory literature:

"The cylinder block is also equipped with a by-pass valve. This valve
will open prior to the oil filter bypass valve."

You don't need a valve equipped oil filter.

My rule of thumb: if it's good enough for Volvo, it's good enough for
DeLorean (engines are essentially identical).

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote:
> The other thing that wasn't mentioned is that these filters are what
> is known as "Full Flow". What this means is that ALL the oil from the
> oil pump is filtered. On filters like this (all modern filters) there
> is a bypass valve. If the filter gets too dirty the oil will still get
> to the bearings, just not filtered. This is done to keep the filter
> element from blowing through and to continue oil flow to the engine.
> There are all kinds of different specifacations for this "Bypass
> Pressure". Only by getting the filter that is recommended by the
> manufacturer of the car can you be sure you are using the "correct"
> filter. Cross-referenced filters may not be right. An individual owner
> does not have the werewithal, time, and resources to qualify ALL of
> the parts on his car. The Delorean venders do. If there was something
> better for the car they would know it, and supply it. It is in their
> collective interest to supply us, the customers, with the best parts
> they can. The same cannot be said about the 17 year old behind the
> counter at Autozone.
> David Teitelbaum
> vin 10757 
> 





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