The oil pump is a high pressure /low volume pump isn't it kind of worthless and could cause a problem ?
The oil pump is a high pressure /low volume pump isn't it kind of worthless and could cause a problem ?
Texas speed 408 stroker,Lingenfelter ls3 ported heads,tv1900,2.8 pulley,kooks header header back,custom axel back, squash double pump upgrade, e85 tein lowering , demon 8 triple pod, brembo brakes ,brm sway bar, bmr toe rod , bmr end link, spohn trailing arms, tein springs,tsw nurburgring rims. Icebox. Old numbers on stock engine 650/620 with 3.0 pulley
Actually the stock oil pump is a hi flow oil pump.
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Originally Posted by RichsGreyGT
Yes it's a high volume pump. It pumps about 20% more gallons per hour than a standard LS oil pump.
The extra volume is only required because of AFM hardware (solenoids in the valley plate) and there is an extra pressure relief valve inside the oil pan to protect the AFM gear from high pressures.
The AFM relief valve is additional to the relief valve already part of the oil pump itself.
The AFM relief is set to start bleeding away oil pressure at 55psi (cracking pressure) and to not allow oil pressure to build past 75psi (full lift pressure).
If you understand any of that you'll see that any talk of having or installing a high pressure oil pump, while keeping the AFM relief valve in the oil pan, is just crazy talk.
Crazy Paul
Your Holden Parts Connection in Australia!
NB: Anyone considering using an L76 engine for transplant into something other than a G8 should be wary of the high volume oilpump. The G8 uses a large volume oilpan and the engine has a large circulating oil volume. If anyone were to install a smaller oilpan to fit in a kit-car or different model to G8 then the risk is great that the stock high volume oilpump can pump a non-G8 oilpan dry.
(Yes, people have already done that).
Crazy Paul
Your Holden Parts Connection in Australia!
Forgive me in this question doesn't neccesarily fit into this thread but it is related to the stock cam and hardware:
For those of us that are running with DOD off in our tunes, is this technically putting additional stress on the DOD lifters? Since they are pressurized with oil and all. Guess I'm just thinking out loud but obviously GM didn't intend for a DOD car to run 100% in V8 mode.
No extra stress. They actually work the opposite way to what you are thinking. Pressurized oil is sent down a gallery to collapse the lifter when AFM is commanded on.
Holden ran L76's with AFM hardware but no software in some production VZ cars in 2006.
They are now doing a very similar thing in 2011. Instead of having L76 with AFM in automatics & L98's with no AFM hardware in manual cars .....now they have the one engine L77 (L76 with flex fuel capability) which is used in both manual and auto Series 2 VE's.
So any manual Series 2 Holden VE with a V8 will be running with AFM hardware fitted but never being used.
Crazy Paul
Your Holden Parts Connection in Australia!
Ok, thats good to know. I've been running DOD off for about 10k now and was curious as to if it may have contributed to my lifter failure. Thanks
So I'm switching to the melling oil pump since it flows more
Last edited by Darkmanx; 01-27-2011 at 09:12 PM.
Texas speed 408 stroker,Lingenfelter ls3 ported heads,tv1900,2.8 pulley,kooks header header back,custom axel back, squash double pump upgrade, e85 tein lowering , demon 8 triple pod, brembo brakes ,brm sway bar, bmr toe rod , bmr end link, spohn trailing arms, tein springs,tsw nurburgring rims. Icebox. Old numbers on stock engine 650/620 with 3.0 pulley
There is no need. As mentioned the stock ump is already a high volume pump.
09 Stryker Blue G8 GT 435/405 Full bolt-ons, TSP 229/236 Cam, 3200 stall, Camaro diff, tuned by Frost, Pedders Suspension
02 SS #510 M6 440/400, 585/592 100 shot Sold
98 Z28 M6 cam/boltons 395/377 Sold
73 Z28 Neverending project Soon to have a 454LSX with twin-turbos
Where does the cam position sensor go??
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