Oil Pump Question

[1jzjoey]

Im going turbo ka24de pretty soon and need to know if im running 9 psi what oil pump would i need or could i use my stock oil pump?

[Tantwoforty]

You can use the stock one. i dont think there is a better one anyway.
You should ensure its working properly bu getting a oil pressure gauge.

[tgd89]

Toga makes hv pumps, this should really be in tech though.

[wangan_cruiser]

toga what?

[1jzjoey]

You can use the stock one. i dont think there is a better one anyway.
You should ensure its working properly bu getting a oil pressure gauge.

really? most people tell me to upgrade it.

[wangan_cruiser]

really? most people tell me to upgrade it.


what is the upgrade for the oem then?

[1jzjoey]

what is the upgrade for the oem then?

an HV(high volume) pump...they are like $300

[codyace]

no need to worry. OEM pump will suffiice.

[Walperstyle]

Hey 'illest' link me to one of these, HV pumps?

and who are these people that keep telling you to upgrade your oil pump?

[brizanden]

just get new oem gears and regulator valve for the stock one.its cheap good insurance

[Walperstyle]

^what gears?


Look, I'm just kind of curious if any of you have actually taken a look at the KA24DE oil pump. Its driven from the Crank. I'm also trying to get to the bottom of a lot of possible mis information.

[Walperstyle]

Btw, TOGA is just OEM replacement

[Tantwoforty]

You can take apart the pump and check the gears and see if they look clean and have good clearances or any issues. Theres also a piston like spring loaded bolt, im pretty sure this is to regulate the oil pressure, i took it all apart and cleaned it and added alittle assembly lube and it seems to work great
Looks like the toda one claims to be "High volume" but i dont see a psi number so im not to sure about it, and its 270.
Im pretty sure people run 400hp+ on oem pumps.

Looks good on paper though

High Volume Oil Pumps
Advantages, Myths and Fables
Most stock automobile engines are designed to operate from idle to 4500 RPM. The original volume and pressure oil pump will work fine in this type of application. But, as the demands on the engine increase, demands on the oiling system and pump increase as well.

The Oil Pump's most difficult task in to supply oil to and connecting rod bearing that is the farthest from the pump. To reach this bearing, the oil travels form three to four feet, turns numerous square corners through small holes in the crankshaft to the rod bearing. The rod bearing doesn't help matters. It is traveling in a circle which means centrifugal force is pulling the oil out of the bearing.

The size of the gears or rotors determines the amount of oil a pump can move at any given RPM. Resistance to this movement creates the pressure. If a pump is not large enough to meet the demands of the engine, there will not be any pressure. Or if the demands of the engine are increased beyond the pumps capabilities there will be a loss of oil pressure. This is where the HIGH VOLUME pumps come in; they take care of any increased demands of the engine.

Increases in the engine's oil requirements comer from higher RPM, being able to rev faster, increased bearing clearances, remote oil cooler and/or filter and any combination of these. Most HIGH VOLUME pumps also hand an increase in pressure to help get the oil out to the bearings faster.

Now that we've gone over what a HIGH VOLUME pump will do, here's a couple things it won't:
1) It will not replace a rebuild in a worn-out engine. It may increase pressure but the engine is still worn out.
2) It will not pump the oil pan dry. If a pan is pumped dry, it is because the holes that drain oil back to the pan are plugged. If the HIGH VOLUME pump is also higher pressure, there will be a slight increase in flow to the top.

High Volume pumps can be a big advantage if used when needed. If installed in an engine that does not need the additional volume, they will not create a problem. The additional flow will be re-circulated within the pump.

[Walperstyle]

These HV pumps, you are obviously talking about a dry sump setup. PS, you can also restrict the amount of oil in and around your engine if you use the right fittings. You will have to restrict oil going to the turbo. The KA engine also has very expensive 'oilers' under each piston that help keep her lubricated.


Well as for the OEM, I found one of my many oil pumps, and apparently I did take one apart in the past..

List of parts.
135 Front Cover & Fitting :: Engine Mechanical :: Genuine Nissan Parts :: 240SX Parts (S14) 1995-1998 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com (http://www.courtesyparts.com/240sx-parts-s14-1995-1998/genuine-nissan-parts/engine-mechanical/135-front-cover-fitting/-c-3690_3691_3692_3702.html)

Its cheaper to buy someones full KA engine for $100 or free. They come up for sale every so often... whenever someone swaps to a SR.

[brizanden]

^well if you wanna build something right you spend $$$$. im pretty sure from courtesy nissan u can get the gears and the valve for like 90 bucks together. i got them awhile ago.

[Tantwoforty]

Long story short. You should use a OEM one. If you wanna spend money, Buy a OEM Nissan one from the dealer and be done with it.

[1jzjoey]

Long story short. You should use a OEM one. If you wanna spend money, Buy a OEM Nissan one from the dealer and be done with it.

thanks for all your info man, i guess you do learn something new everyday.:bigok: