Re: New engine coming

[Andrew Paroczy <evilone@dove.net.au>]

Theoretically,the pressure doesn't change with different volume pumps.It
will only change if if the spring rate is higher ,or lower with
pressures following accordingly.A filter shouldnt change things ,because
you are pumping an uncompressable liquid through the same size
galleries.Now , if you opened up the galleries at the bearings,the
pressure would drop,then install a high volume pump to compensate
this.If you want a higher pressure , put in a tougher relief spring to
slow down oil dumping into the sump with the higher volume pump.But why
stuff around?Volkswagen's setup is best and should rarely be altered(oil
filter an exception!!!!).
Keith Park wrote:

> When the oil is fully warmed up the releif valve is closed and you
> have the
> maximum pressure the pump can put into the bearings, so your OP is
> determined by how worn your bearings are.( or sloppy).
>
> once the RV is closed you can put in a bigger spring but it wont boost
> pressure
> with hot oil.  High volume=lower pressure with oil pumps I've found.
>
> In other words... If your running 35psi on the highway at tempurature
> theres no way to make that higher and if you add a restriction, such
> as
> a filter, it will be less.
>
> Keith