[Healeys] Oil pressure gauge response

[Oudesluys]

Nothing to do with the air in the line to the oil pressure gauge. Air in 
the line is needed to even out vibrations of the needle due to the small 
pressure pulses from the oil pump. It is not uncommon that pressure 
build up is delayed. How and why this happens and why within the same 
make and type of engine it occurs or not is often unclear.
On my car (Jensen Healey) I can have pressure from cold (or hot for that 
matter) practically instantaneous or it can last up to half a minute or 
more. Most JH's/Lotus 907 engines show this delay and it is the most 
extreme in any engine I have encountered.
Always start the engine without revving it. Leave it idling and do not 
drive away until you have oil pressure.
It does not seem to harm the engine as on my first JH I did over 
160.000mls without any degradation of the oil pressure and/or bearings.
Kees Oudesluijs

Op 31-8-2016 om 21:47 schreef Stephen Hutchings:
> Again, thanks to everyone who replied to the BJ8 oil pressure survey- 
> interesting variety of responses.
> My oil pressure figures fall well within the acceptable figures, but 
> what I'm wondering about is the time it takes for the needle on the 
> gauge to come up.
>
> I haven't actually timed this, but mine seems to take an uncomfortable 
> length of time to come up on a cold start. Could this just be air in 
> the line delaying the response of the gauge- the pressure relief 
> valve...ideas?
> Whenever I change the oil filter it's full, so I don't think it's the 
> filter filling up. I understand that this is a vague question until 
> I've actually timed it, but I wondered if anyone else had had the same 
> concern.
> Thanks,
>
> Stephen, BJ8
>
>
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