porting oil pump
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There are too many factors to determine that answer. You may not get an approximate answer. It more depends on your power goals and what parts you plan to run. But if you wanna get vague I'd say above 250 HP but again it depends on what power adders you areooking at. If you are going turbo I'd probably do it regardless. It doesn't hurt even on a OEM job as well.
I rev my motor to 8500 so i ported mine. There are pics if before and after in my build thread.
power or rpms? 300 hp at 6500 shouldnt need a ported oil pump since your well within hondas limits of the pump. it was made for 7200 redline but even 100 hp at 9000 i say port the pump. i think rpm is more important then power for weather you port your oil pump or not
although if you have an a turbo or anything else that adds volume on the pressure side of the pump i would port it.
really i port my oil pump on any build i would do, including an oem rebuild. why not, is what i say. it take an hour and you get better oil flow, so why not unless you just want to leave your honda pump assembled by honda for reliability issues.(ie not trusting your self, or not having the tools)
power or rpms? 300 hp at 6500 shouldnt need a ported oil pump since your well within hondas limits of the pump. it was made for 7200 redline but even 100 hp at 9000 i say port the pump. i think rpm is more important then power for weather you port your oil pump or not
although if you have an a turbo or anything else that adds volume on the pressure side of the pump i would port it.
really i port my oil pump on any build i would do, including an oem rebuild. why not, is what i say. it take an hour and you get better oil flow, so why not unless you just want to leave your honda pump assembled by honda for reliability issues.(ie not trusting your self, or not having the tools)
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Like Evanguy said I think it's more about the rpm you are reving than the horsepower you are pushing. Porting an oil pump is never a bad idea on any setup even stock, but more important if you rev past stock redline.
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Many stock dseries motors have died an early death due to lack of proper oiling. It just so happens that when you add a turbo, you add another pathway the oil system must lubricate. Leaving even less oil for the motor.
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The lack of oiling is usually caused by lack of oil.
Not inadequate pump design.
That restricting orifice that you all take out so eagerly is there to hold pressure on the back side of the pump. Honda knows the dimensions of the oil passages, you would agree?
I get 7-8 PSI at idle after I ported and smoothed my pump.
5w-40 Honda recommends 5w-30
Not inadequate pump design.
That restricting orifice that you all take out so eagerly is there to hold pressure on the back side of the pump. Honda knows the dimensions of the oil passages, you would agree?
I get 7-8 PSI at idle after I ported and smoothed my pump.
5w-40 Honda recommends 5w-30
What are your bearing clearances? Even with my loose bearing clearances I have 20psi at idle with a ported oil pump.
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Did you smooth out that horrid pocket by the exit?
.001 -.0015 rods .0015-.0020 mains. Pretty standard
I think
.001 -.0015 rods .0015-.0020 mains. Pretty standard
I think
Yes I did, I had pictures of it somewhere. I wonder if yours was just smoothed more. How old was the oil pump?
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Brand new out of the red Honda bag.
If you have a Y-series crank, port the pump.
If you are using a Y-series pump, port it and drill out the inlet to 12-13mm (about half an inch).
If you are doing anything with elevated RPM, port the pump.
If you will be using forced induction, port the pump.
Honestly, for about half an hour and a proper aluminum carbide and maybe a sanding drum or flap wheel, it's worth it to do any nearly any engine.
If you are using a Y-series pump, port it and drill out the inlet to 12-13mm (about half an inch).
If you are doing anything with elevated RPM, port the pump.
If you will be using forced induction, port the pump.
Honestly, for about half an hour and a proper aluminum carbide and maybe a sanding drum or flap wheel, it's worth it to do any nearly any engine.
I agree with this. It's easy to do, doesn't take long, and costs very little.
The Honda service manual states that oil pressure should be no less than 10psi at hot idle and no less than 50psi at 3000rpm. I've learned, however, that flow is more important that pressure and that oil temperature is important as well.
I get about 70psi pressure between 6-7k rpm, at idle I have 20psi. These numbers sound ok? The outlet on my pump was widened as per instructions in another thread on here
Yes, they are fine.
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