[Diy_efi] [ot] Oil pressure during cranking ?

[Mike]

Thats an interesting point Mark,

Might be mine isnt as self priming as they need to be at low (crank)
rpms, maybe I need to back feed some oil into the oil pressure
sense gallery to get it started...:(

Thanks for the feedback, food for thought,

rgds

Mike


At 03:36 PM 10/31/05, you wrote:
>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
>>_______________________________________________
>>Diy_efi mailing list
>>Diy_efi at diy-efi.org
>>http://lists.diy-efi.org/mailman/listinfo/diy_efi
>>
>
>
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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