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WB253 and Oil Pressure

Gday Everyone,

I have a problem with the oil pressure in my 253. We have changed the pump, packed the pump with grease as well as primed the oil filter with 20w-50 then with 90w gear oil to try and get pressure up. We have taken the sump off and cleaned the pick up pipe and screen. The screen had several peices of rubber and gasket stuck after cleaning these off and re assembling the bits and pieces again tried to get oil pressure with the above mentioned methods. We have the plugs out, and we have even poured 5L of oil down through the rocker covers to try and induce pressure while turning the engine over, is it possible for the pick up pipe to be cracked somwhere or what other places is it possible to be sucking air in to prevent oil pressure coming up????

cheers Luke
lukej21@hotmail.com
p.s any ideas would be gratefully appreciated.

Model: 

Comments

have a bit of a look at the gear on the pump drive there only pressed on sometimes they slip

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first determin your pressure guage works properly (the dash 1's are for look's),rebuilding the pump using high volume gears may help, these where only fitted to the proformance factory V8's, like the L34 A9X 308's . if all this fails I have herd of some people using the valiant hemi gears in the GM pump they have a slightly higher presure. dont know how it work's.

'

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the other guys are right but there are other places like excessive wear on bearing journals etc. Because oil is basically non-compressible, any spots where it can leak will reduce your pressure. Since the pressure is a function of area (or more specifically, volume in your case).

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