Katech_Jason

iTrader: (19)

New for 2011 Katech has added another oil pump to it's lineup. The new pump has 23% more capacity than the KAT-A2390 pump. Like the previous pump, it is also blueprinted and CNC-ported.

-Brand new G-Rotor oil pump
-23% more capacity
-CNC-ported oil inlet
-Strict procedures which assure ultimate quality
-Includes heavy duty oil pickup tube o-ring

In stock now! Order online http://store.katechengines.com/high-...pump-p272.aspx

ZeeOSix

Do you have any test data, etc that could tell me ....

What's the oil volume vs. RPM curve look like on the stock pump versus these hi-performance pumps?

Also, what is the stock oil pump relief pressure setting and the relief pressure setting on these hi-performance pumps?

crainholio

iTrader: (2)

Looks nice! Will it fit under the stock LS1 timing cover without grinding for clearance?

sjsingle1

iTrader: (1)

will it come with a free set of rod bolts that always seem to be out of stock?

NemeSS

iTrader: (127)

Is it a oe gm pump that has been modded?

1badWS6

iTrader: (32)

In for test results.

Katech_Jason

iTrader: (19)

I don't have that data for you. The PR valve is the same as an LS6 pump though.

Yes, it will fit.

Yes.

ZeeOSix

If there is no data, then where does the 23% increase in capacity come from?

Do you know what the pressure relief valve is set to?

Katech_Jason

iTrader: (19)

23% thicker gerotor

I don't have the PR valve data you're looking for. It's not a simple clear-cut answer.

1Topgun

iTrader: (3)

According to Scoggin-Dickey Parts web site, the GM standard LS oil pump relief valve is set to 32 lbs. Here's a copy of their item listing:

LS Engine Oil Pump
Part Number: 12586665
Brand: GM Factory Replacement Parts
SKU: 12586665
Price: $94.85
Standard volume GM oil pump for LS engines. Original equipment oil pump for the LS1, LS6, LS2, and LS3 engines. This pump is used on most current V8 LS engines that are not equipped with Active Fuel Management.

Technical Notes:

Standard Volume LS Oil Pump
By-Pass Spring Opens at 32-psi
Recommended Pump for Most LS Engines

ZeeOSix

Humm ... 32 psi seems low since I see 70~75 psi on the oil pressure gauge at high RPM on my stock LS6. Maybe that is when it just starts to crack open, but regulates max oil pressure to around 75 psi (?).

crainholio

iTrader: (2)

Fantastic! I'm running one of your ported oil pumps from back in 2004 and it's been flawless, next refresh I'll be back for one of these. The engine will be past 100K miles by then and the extra volume will be a good safety buffer.

ramairJP

iTrader: (3)

What are the thoughts on this sucking the oil pan dry in high RPM situations? Just curious because my standard Katech LS6 pump keeps my oil pressure rock solid.

Katech_Jason

iTrader: (19)

My thought is it's time for a dry sump system.

Whiteaw57

iTrader: (2)

how would one go about a dry sump system in an f body? I know the ls7 is dry sump but all I am familiar with is a NASCAR type setup.

ZeeOSix

If the pressure relief valve is set to the same as a stock oil pump (~75-80 psi), then (theoretically) at high RPM the pressure relief will be operating and the volume of oil going through the engine will be the same. If an engine produces 75 psi at pressure relief, then the rest of the oil volume is shunted back to the sump (or pump intake), regardless of how much volume the pump puts out, and the oil pressure remains constant until the RPMs are decreased and the pressure relief valve starts closing.

High volume oil pumps are useful for engines that require more volume (not necessarily with more pressure) - maybe due to adding a turbo that has oiling needs, etc. The only way to get more high RPM volume on a stock oiling system is to increase the relief pressure along with a higher volume pump. Higher volume pumps also give you more volume and pressure between idle and the pressure relief point at higher RPM ... but once the pump hits pressure relief, then that will determine the actual volume of oil going down the engine's oiling circuit no matter how big the oil pump is.

Katech_Jason

iTrader: (19)

ARE has LS1/LS6 dry sump pans. Scavenge pumps mount where the AC compressor goes and is driven by the same belt. The pressure pump in the engine stays. Also a dry sump tank would need to be mounted. On our LS7 F-body we built years ago we put the tank where the battery was and relocated the battery to the back.

anotheraznguy

iTrader: (1)

jason, what would a typical dry sump system run?

Katech_Jason

iTrader: (19)

$3-7k.