Oil pumps

[chris96]

Has anyone used one of those “diesel transfer” pumps for the oil pump? Im currently looking at one and says it flows 12litres per minute. Hopefully it can make over 40psi.

Link: www.ebay.com.au/itm/172624843700?hash=item28313e13b4:g:J6sAAOSwuDBf5b6k

[racket]

Hi Chris

I notice thats an "au" Ebay Link , whereabouts in Oz are you ??

Some of these pumps can "leak" around that cover plate when under pressure , 12 lpm would be nill pressure flow so it will be considerably less at say 50 psi , but probably worth a try :-)

Cheers
John

[chris96]

Aug 2, 2022 23:15:51 GMT -5 racket said:

Hi Chris

I notice thats an "au" Ebay Link , whereabouts in Oz are you ??

Some of these pumps can "leak" around that cover plate when under pressure , 12 lpm would be nill pressure flow so it will be considerably less at say 50 psi , but probably worth a try :-)

Cheers
John

Im in tweed heads south of gold coast. I was going to use that or just an efi fuel pump or two. Im asuming you’re in oz aswell?

Thanks for the help.

[racket]

Hi Chris

I'm just down the road a tad south of Port Macquarie, nice to know theres another builder so "close" :-)

EFI pumps aren't any good with "thick" oil , I tried one with relatively thin turbine oil on my 9/94 engine but it struggled , you're much better off with the pump you're looking at , if it leaks around that relatively thin plate if it buckles under pressure , its possible to replace it with a thicker plate over the top of it and some longer screws.

Cheers
John

[chris96]

Small world after all. Good to know i can fix the pump if it leaks and shouldn’t be to hard as im a metal fabricator anyway.
Going to regulate oil pressure with an automotive fuel reg hope that handles the thicker oil too.

[miuge]

We used a similar pump on our build and it had problems with managing heat. I think there was a heat safety switch inside which turned the pump off and after we took it off the plastic cap where the brushes are mounted melted. If you think of making a metal cap remember you need to have some sort of insulation between the brushes and the cap, no electricity can run thru the brushes to the cap via screws or such.
Secondly the pump flows a bit too much oil for a medium sized turbo I think, we had it coupled to a BW S257 turbo and had to by-pass some oil, we thought of turning down the gears, but never tried.

Nowadays I think there's much more reasonable solutions such as hydraulic gear pumps coupled to a separate motor with a speed controller. See user 'andym' previous posts for reference.

[racket]

Hi Chris

If you have the means to fabricate a more appropriate lube system then there are automotive oil pumps that can be adapted , I use old Subaru oilpumps as they have all the relief valves as well as oil filter mounts on them , then connect them to a 12V electric motor , actually a 24V motor but running on 12V to reduce RPM and flows , jetandturbineowners.proboards.com/thread/78/garrett-gt6041-powered-kart?page=4 theres also a Ford pump ( Escort??) and I even used an old Holden pump on my turbine bike jetandturbineowners.proboards.com/thread/1366/tv84-turbine-bike .

Cheers
John

[richardm]

Thje transfer pump you are referring to is rated at a 3 meter lift.. Not much pressure out of it.. I doubt it would be enough.

[miuge]

The pump head itself produces easy 8bar at cold oil temps and at running temps plenty enough for any DIY turbines, its just the electronics of the pump that sucks.

[ausjet]

Aug 3, 2022 2:18:01 GMT -5 chris96 said:

Small world after all. Good to know i can fix the pump if it leaks and shouldn’t be to hard as im a metal fabricator anyway.
Going to regulate oil pressure with an automotive fuel reg hope that handles the thicker oil too.

Hey Chris, there’s only a handful of us here in aus mucking around with this stuff!
Make sure you use a large enough fuel pressure reg to handle the oil. I started off with an aeromotive one good for 1000hp but was way too small. It couldn’t bypass enough. Ended up using this bad boy from GFB in the link below. (PN: GFB 8070)

jetandturbineowners.proboards.com/thread/966/hc5a-kart-build?page=7