Yes your pressure is low. The relief valve has nohing to do with the 15 at
idle. It is a relief valve meaning that it releases excess pressure from
the system. If your system cannot even come up to the release pressure then
you have a problem elsewhere.
Yes, I have modded the valve - used the steel one, added washer shims
behind the spring (it's guess work but 1 will probably do). Now the release
pressure is about 55 lbs. It gets up to about 65 when cold as the oil it
thick.
John
;At 01:59 AM 8/22/01 -0400,
Steven Silverstein wrote:
>Has anybody modified the Presure relief valve and how well did it work?
>Any problems or cautions?
>
>I have a Series V with the 1725 which is showing weakness in oil presure
>which seems to be caused by the relief valve (~15-45 pounds hot). The
>engine is fresh so I don't believe that it is caused by another mechanical
>ailment.
>
>It has a new oil pump, bearings, new rod bushings, so I would expect better
>presure. It does run great.
>
>Thanks,
>
>Steve
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