[Diy_efi] [ot] Oil pressure during cranking ?

[mark krawczuk]

hi, u should get pressure while cranking the engine.
 a couple of weeks ago , i rebuilt a 308 holden , cranked it for  ages, 
still no pressure, what i had to do is  put a heap of grease in the  oil 
pump , and as soon as i started cranking, i had oil pressure.
mark k


----- Original Message ----- 
From: "Mike" <niche at iinet.net.au>
To: <diy_efi at diy-efi.org>
Sent: Monday, 31 October 2005 5:48 PM
Subject: [Diy_efi] [ot] Oil pressure during cranking ?


> Sorry guys but I need an opinion on this off topic item asap ?
>
> When cranking an engine over, do most crank driven oil
> pumps generate much pressure or do they have a minimum
> crank speed before they raise oil pressure ?
>
> In my case, I did some bottom end work, put everything back,
> heaps of oil in sump, took out spark plugs, cranked engine
> over for 25 secs and still no oil pressure :( I'm not using a
> sender but a proper oil pressure gauge I have just checked
> on a compressor. Engine is RB30ET 6cyl nissan, had oil
> pressure before (via sender) but discovered oil sender was
> faulty and reading high but there was still pressure...
>
> So hence my question, do I need a min RPMs ?
>
>
>
> Regards from
>
>
> Mike
> Perth, Western Australia
> VL Commodore Fuse Rail that wont warp or melt !
> Twin tyres for most sedans, trikes and motorcycle sidecars
> http://niche.iinet.net.au
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