Need 12 or 24 volt oil priming pump for Centurion

[Malcolm Towrie]

Theres a significant delay between the start of the Meteor and oil pressure coming on scale. And by significant, I mean the kind of worrying few seconds delay you get on a car after changing the filter.
I installed a small 12V pump from a Mack truck but the flow is too low to register on the oil pressure gauge prior to start so I may be getting oil to the bearings but not to the valve train.
Has anyone found a 12 or 24 volt priming pump that flows enough to at least generate a few psi with bigger engines?

Thanks,
Malcolm