boosting idle oil preassure to 12PSI
I hear that 7psi is the average? I dont like what I see in these engines and would like to boost "idle oil preassure to around 12psi. From what I have read, no one has done this. Is it possible to do "if" I wanted to?
Yes it is possible "If" you wanted to add more psi, look into adding a 1/8" thick shim (washer of slightly smaller diameter to the relief valve cylinder) between the spring and relief valve sealing bolt in the oil pump housing. Not many people do this mod as it usually isn't necessary. +300k mile F22's out there still running on stock oil pressure. The average idle oil pressure for the F22 is 10psi minimum. I usually see between 12-14psi. That is enough for a stock engine.
If you think your oil pressure is low you should have it tested. @ idle you should see a minimum pressure of 10psi and @ 3000rpm it should be a minimum pressure of 50psi.
If you think your oil pressure is low you should have it tested. @ idle you should see a minimum pressure of 10psi and @ 3000rpm it should be a minimum pressure of 50psi.
You know, Ghost, its funny you popped up. I know you have a rep around here for knowledge and was thinking of calling you out, but didnt want to bug you. Since, and its my pleasure, your now a victim of your trolling, let me honestly ask you. On these motors, why would shimming do any good at idle? Is the release valve that close to the opening that it floats on the opening? I would assume, knowing engines, that the relief would not even come into play until at LEAST 5k???? What does your wise crystal ball see that I am missing? Feel free to explain it in complete technical terms f it is easier, I am well versed in auto-ology, mathmaticle theorys, general theorys and magical pixy dust, I can handle it. 
I assumed this would not happen unless we switched to a high "volume" pump, in which my original question to pull you out of the darkness would have been, "with all these engines in the ricer crowd being used, why ISNT there a high volume/pressure pump out there as an option?" Plenty of choices for big block chevys, fords etc. I even have one on my 4.6 stroked Grand (I have it at 55psi max). I am sure not everyone would use in the Honda world, but, there is not even an option, other than the old shim trick, which to me is the same as the "pull my finger" trick, lol. If thats all there is, thats all there is, but, wtf, NO options out there? I have read there is a counter balance delete mod, complete with pump mods. Its said it helps oil pressure, just what I am "kind of" looking for, but not what I want. I was expecting to find a pump with a machines housing and bigger gears, something from Melling, yada yada, but, nada. Well, I got a Honda to learn about them, lol. What gives Ghost?
Just an fyi, I am only worried about idle pressure. I will check oil pressure over the next few days for grins and giggles. Well, if I can find a gauge.

I assumed this would not happen unless we switched to a high "volume" pump, in which my original question to pull you out of the darkness would have been, "with all these engines in the ricer crowd being used, why ISNT there a high volume/pressure pump out there as an option?" Plenty of choices for big block chevys, fords etc. I even have one on my 4.6 stroked Grand (I have it at 55psi max). I am sure not everyone would use in the Honda world, but, there is not even an option, other than the old shim trick, which to me is the same as the "pull my finger" trick, lol. If thats all there is, thats all there is, but, wtf, NO options out there? I have read there is a counter balance delete mod, complete with pump mods. Its said it helps oil pressure, just what I am "kind of" looking for, but not what I want. I was expecting to find a pump with a machines housing and bigger gears, something from Melling, yada yada, but, nada. Well, I got a Honda to learn about them, lol. What gives Ghost?
Just an fyi, I am only worried about idle pressure. I will check oil pressure over the next few days for grins and giggles. Well, if I can find a gauge.
Last edited by sikpupy; Oct 11, 2018 at 09:12 PM.
You are absolutely correct, I was hoping to get rid of you easier than that. At idle it would always stay at 10-15psi even with a 1/2" shim in it. It stays that pressure until approx. 3000rpm when at that point it would reach approx. 50-60psi and open the relief valve to maintain that operating pressure.
There used to be high volume high, pressure oil pumps available out there. It was more the pump gears that you would swap out and a simple porting of the housing a little bit. Fact that they are not really all that popular is that these are Honda engines, not Chevy's. No real need for them!
There used to be high volume high, pressure oil pumps available out there. It was more the pump gears that you would swap out and a simple porting of the housing a little bit. Fact that they are not really all that popular is that these are Honda engines, not Chevy's. No real need for them!
Good thing you caught me trolling tonight. I only had 3 nights off to troll and this was my last one. I won't be around much now til the middle of November.
Well, i am glad I caught you. I see, sadly, I am not too far off base with my thoughts and theroys. Kind of sad because what do you do when you know enough to realize Santa inst real? Where do I go from here, lol?
Sad the Honda community doesnt realize how a high volume low preassure pump could benifit them. I guess this is the elcheapo, blow em up and buy another genre? I mean, $300 a engine on CL? Not even worth spending the money to rebuild. I digress, I may just have no choice to join the bandwagon. Never said rolling with rice would be easy.
Was still curious if I was missing something as I swore I read where someone said they did the shim thing and gained like 10psi at idle. Not sure if they did something else, had a placebo effect on the guy, he was smoking some really good stuff or I need to be.
Thanks for chiming in though Ghost, appreciate it.
Sad the Honda community doesnt realize how a high volume low preassure pump could benifit them. I guess this is the elcheapo, blow em up and buy another genre? I mean, $300 a engine on CL? Not even worth spending the money to rebuild. I digress, I may just have no choice to join the bandwagon. Never said rolling with rice would be easy.
Was still curious if I was missing something as I swore I read where someone said they did the shim thing and gained like 10psi at idle. Not sure if they did something else, had a placebo effect on the guy, he was smoking some really good stuff or I need to be.
Thanks for chiming in though Ghost, appreciate it.
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