Oil pump. Your thoughts..

[caduceus]

On the final furlong of rebuilding the engine and it's time to refit the timing cover next. New front seal in, oil pressure relief valve slightly stiffer and new oil pressure sender.

On inspection of the pump, there are no cracks or teeth missing. There is however scoring on the oil pump gears and the small cover.





Now I'm assuming there are two trains of thought here:
1) the scoring has been done and it's bedded in now. If the structure is intact then stay with it.
2) If there is scoring, change the gears.
3) if you're doing an engine rebuild, changing the oil pump gears is a matter of course job to be done.

Your thoughts gentlemen....?

[Sardonicus]

The scars in the closing plate can be faced off both those gears are knackered look at the pitting and the profile of the rotor tips, £60 squids for a new set of rotors that go in chamfered edge 1st to the front cover

[phazed]

Wot e said.

I faced up my plate with a block and different grades of wet and dry, (all I had on the shelf at the time but worked a treat).

[caduceus]

Thanks chaps. New one ordered. That's all the pumps renewed in the car now
Will have a go at wet 'n' drying the cover plate later with a block.

One question - will packing the pump with Vaseline have an adverse effect on the running in oil? Is there something else I can pack it with that is not petroleum based? (I am aware of priming the pump with an attachment down the dizzy hole. But would prefer to avoid that ball ache.)

[N7GTX]

Always found Vaseline worked well on my SD1s (pre-serp of course) and no issues.
If yours is a serp engine, disable the fuel pump and crank until you get oil pressure. Just ensure you dip the gears in the oil when fitting so they are wet and will cause suction.

Edited by N7GTX on Friday 21st October 15:18