oil pump, which one Options

[trojanhorsepower]

All,
I am looking to change the oil pump as a way to up my oil pressure. I understand that this may well not help, but having a new oil pump around is OK.
With that in mind, what are my options? I will pull the motor but hope to not split the case. Is this even possible? Which pump?

Thanks

Peter

[trojanhorsepower]

OK thanks for the replies. I think I am getting there. Sounds like my best option for keeping the car on the road is to build the spare motor, measuring out the pump etc. Swap that in for the first motor then pull the pump measure everything find a pump and reinstall.
90% sure its a T1 pump now.
@superhawk995 do you collect OEM T4 pumps and just go through them to find a good one or do you buy one from one of the main supplier and pin it yourself?

Thanks,

Peter

[Superhawk996]

OK thanks for the replies. I think I am getting there. Sounds like my best option for keeping the car on the road is to build the spare motor, measuring out the pump etc. Swap that in for the first motor then pull the pump measure everything find a pump and reinstall.
90% sure its a T1 pump now.

FWIW

Since you are not 100% sure if what you have I’m going to assume you don’t know with certainty what your Pump end play clearance is.

If it were me I’d pull the engine. Check the pump OD and and end clearance before rebuilding another whole engine.

These two factors have an enormous influence influence over low engine speed oil pressure.

This can be done over a weekend.