Electrical wiring question

[911TT33]

Hi electrical gurus.

I have a rear BOSCH 044 Motorsport fuel pump wired up to the ignition so it starts pumping when the ignition is turned on.

Do you think it's possible to wire an electric oil scavenge pump to this same circuit in parallel so they both turn on at the same time?

The scavenge pump is for recirculating the oil from the two low mounted turbo's back into the engine.

[Porboynz]

I would use the existing pump wire feed to activate a relay with a seperate battery feed. The relay should be rated to run all the pumps via a suitable fuse.

[911pcars]

Originally Posted by 911TT33

Hi electrical gurus.

I have a rear BOSCH 044 Motorsport fuel pump wired up to the ignition so it starts pumping when the ignition is turned on.

Do you think it's possible to wire an electric oil scavenge pump to this same circuit in parallel so they both turn on at the same time?

The scavenge pump is for recirculating the oil from the two low mounted turbo's back into the engine.

The factory drains turbo oil into the engine, yes? However, you might want to explore the best oil return path: Engine or oil tank? Turbo lube oil might be entrained with air bubbles, in which case dumping turbo oil into the oil tank will provide more time to separate air from oil before going to the engine oil pump.

Sherwood