I am looking for someone that has an oil pressure gauge on their stock internals H22 motor... specifically one that still has the balance shafts in.

I need to know some things...

Once your oil is up to full operating temp, at what RPM do you hit:

40 psi, 50 psi, 60psi, 70psi, 80psi, 90 psi, 100 psi??

If you have this information, please let me know... thanks!

 

I have one in my 5th gen. After the oil is hot it stays at about 15 to 20psi at idle, then anything over 3K RPM is 90psi, it never goes over 90psi.

 

Really? Mine never goes above 70-75 psi. Regardless of temp. But mine is placed after the oil filter.

 

577 Where is your sensor? Doesnt that sound like pretty high oil pressure?

 

now that I think about it, it might be 80psi. I have not had the car running in 3 or 4 weeks so I'm not 100% sure (was trying to remember). I will take it out for a drive some time this week and make sure what it is. Anyway, what ever the max is it hits it at about 3,000 RPM's and just stays there untill red line. I will let you know when it hits 40, 50, 60psi ect. also.

My sensor is right after the oil filter.

 

thanks, i would appreciate that. i am doing some research on the H22 oil pump trying to resolve the issues with pump failure in high HP built motors.

 

yeah my idles at 15-20 psi. First start up it hits 65-75. Then slowly go down when at operating temp. I'm not for sure what it hit when at wot. Never really pay attention to it when driving. I'll check it out later. But I thinks its something close to 65-70 psi. I'm boosting too.

 

well at full operating temp i have about 15 psi at idle, and 60 around cruise 3-4k

and i think wot i have about 80 psi

when the car is cold thats a different story, i get 100psi at 3k

i use hamp filters and i noticed a significant oil presure change once i went to these filters

 

Ok, it was nice out so I took the car for a drive after work today.

Oil temp was at 210, and I'm using Amsiol 5w30.

RPM - Oil Pressure
700 - 25
1500 - 37
2500 - 50
3000 - 63
3500 - 75
4000 - 75
5000 - 75
6000 - 75
7000 - 75
7400 - 75

Yup, 90 would of been too high. I don't know why I was thinking 90. /bonk me.

 

thank you SOO much for that information, it was exactly what I was hoping to see! And the numbers are right where I was hoping too.

Do you get a slight pressure drop when VTEC engages? Or is it a H23?

I am currently speculating that excess pressure is what is causing the premature H22/23 oil pump failure in high HP motors. Why? because everyone that does a full build up eliminates the oil squirters. When you do that, and you block off the oil gallies that used to lubricate the shafts, you get a pressure increase because there are less spots draining the pressure.

The geometry of the H22 oil pump is identical to the B series pump, other than the fact that the H series pump is just WIDER... making it move more volume at the same crank speed. I am assuming this is specifically to make sure there is ample pressure to supply oil to all the regular ****, plus the balance shafts.

Let me tell you about my motor... even with a turbo on it, which slight reduces pressure because its another oil feed... my car makes 100psi of oil pressure before 4000RPM.

Once it hits 100, the relief valve opens in the pump and the pressure drops to around 80, but as RPM climbs still it starts to raise pressure again.

If my car is driving, it is always between 80-100 psi of oil pressure.... only at very low RPM and idle is it less.

I am going to have a spring manufactured to lower the opening point of the pressure relief valve and see if I can get my oil pressure to be more like what you just posted. Hoping the excess pressure is the cause of pump failures in built H22's.

 

My H22 is about 15psi at idle and about 75-80 psi at 4K on the freeway it never really go's above 85psi unless its not warm and I'm just running it slowly in a gear

Accordhybrid

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mister2racer &raquo;</TD></TR><TR><TD CLASS="quote">Let me tell you about my motor... even with a turbo on it, which slight reduces pressure because its another oil feed... my car makes 100psi of oil pressure before 4000RPM.

Once it hits 100, the relief valve opens in the pump and the pressure drops to around 80, but as RPM climbs still it starts to raise pressure again.

If my car is driving, it is always between 80-100 psi of oil pressure.... only at very low RPM and idle is it less.

I am going to have a spring manufactured to lower the opening point of the pressure relief valve and see if I can get my oil pressure to be more like what you just posted. Hoping the excess pressure is the cause of pump failures in built H22's.</TD></TR></TABLE>

is that what happens when the gage shoots to 100 then drops real quick?

mine is at like 95 cold start. drops to like 15 at idle when hot. goes between 85-95 while wot. yours sounds a lot like mine, except i still have my balance shafts and oil squiters in.

when i disconnected the shafts no difference. the #'s were very similar on my built engine w/prodrive gear, and my stock one w/stock pump.

switching from 5w30 to 10w30 made a little difference. mainly at idle, but thats where i was worried about it being low.

my gage is tapped right on the oil pump, tee'd w/the turbo feed line.

 

I notice no pressure drop when I hit VTEC. Not that I can tell anyway. Good luck with your project.

Why do you turbo guys take out the oil squirters anyway?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TimeRacer &raquo;</TD></TR><TR><TD CLASS="quote">Really? Mine never goes above 70-75 psi. Regardless of temp. But mine is placed after the oil filter. </TD></TR></TABLE>

I am in teh same boat as you. On start up with a cold engine, it is about 40 psi or so and then drops to around 15. At full throttle, it does not go past 75 or so. I am f/i'd and I am tapped off the oil feed line that runs from the side of the head.

I am not sure if type of oil (synthetic or non synthetic) will have any bearings on what your psi will read.

 

type of oil can have an impact on your oil pressure readings, definatly. thinner oil will provide less pressure at the same RPM because it seaps past the bearings faster and ****.

Only drag racing engines would you want to pull out the oil squirters... FI does not mean pull them out. I still have my squirters... just no balance shafts.

 

What about pressure droping when useing an oil cooler? I have yet to install mine but I've heard horror stories.

 

osokwik: i have never looked at a before and after with oil pressure and oil coolers. Honestly tho, I cant think of a way that the oil cooler would drop pressue... DEPENDING on how its plumped in, and if ALL the engines oil is going thru it, or just some.

If its off your oil filter and its setup so that every last drop of oil goes thru the cooler before it gets to the filter, or even right after the filter but before it gets sent thruout the engine... than in that case i could imagine a pressure drop just from the resistence of flow.

I am not sure if I would ever plumb in oil cooler that way or not... I am not sure if that is the standard way of doing it or not.