[Roadsters] Dropping Oil Pressure at idle

[Eddie]

Oil pressure ALWAYS drops at idle in almost any vehicle.  That's 
normal.  The motor is spinnning at slower RPMS, and so the pump is 
spinning slower, and thus the pressure drops.  I've never owned a single 
car that didn't have SOME drop between idle and driving speeds.

If it drops REALLY low, then you've got a potential problem. 

Eddie

Hoon Kim wrote:
> Just when things are starting to come together, something else shows up.
> Such is the nature of our cars.
>
> After successfully (I hope), swapping out for a new larger alternator, I've
> noticed that my oil pressure is now dropping when I'm at idle. This is
> happening after the engine is warm. When I rev the engine or when I'm
> travelling, the pressure returns to normal. I'm pretty sure it is not my oil
> gauge since I let it drop until the engine stalled on me. I didn't notice
> any knocking, just as the oil pressure drops, the engine gets rougher. I did
> also recently replace the oil filter, but haven't changed the oil. Any ideas
> on what it could be?
>
> Is my engine wearing down (I hope not)?
> Do I need a new oil pressure sending unit?
> Do I need a new oil pump?
> Do I need to add more oil or a heavier weight (don't think so)?
>
> Thanks all.
>
> Hoon
> Early '67 1600
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