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high oil pressure

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Tyler_Brands

Probationary Member
25
0
Sep 10, 2010
Hutchinson, Minnesota
so this has been a problem i have been dealing with for close to 6 months now. when i first got my car i changed the oil and after i did it my oil pressure gauge was maxed out and hasn't moved at all in the last 6 months. it worked before i changed the oil so i know it worked and was hoping someone might know whats wrong with it
 
More than 75-80. Some people see close to 90 -100 after a bs removal which is why they port the filter housing.
 
On the Post it says (STOCK), it means it has the balance shaft on,,,, wright?
or is it delete it.
Do you have your stock gauge connected?
If you do, your stock gauge should read a little over half way, which is about 75psi
But it is not accurate, It is only to give you an Idea if your gauge sensor is working wright.
 
Yeah, sounds like the sending unit is bad to me too. It is located on the oil filter housing. It is the bell shaped thing on the far right in the following picture.
 

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More than 75-80. Some people see close to 90 -100 after a bs removal which is why they port the filter housing.

Sounds like it may have been done if the motor has ever been rebuilt. If it is a faulty sending unit, wont be too big an issue but, most 1gs have been modded in some shape, form, or fashion and the BS is usually the first to go with an engine rebuild.

Guess if it is not the sending unit, he just needs to check for the 2nd little timing belt.
 
So i finally got a chance to get out and look at it and the units still hooked up but the last owner did something to it because it hooked up with just a green wire thats wrapped around it not a clip like there should be. also the BS is still there. so i guess i need a new sending unit and i was wondering when i replace it do i need to drain the oil or can i just swap them out? also if i get an after market gauge would it fix the problem? i ask because I'm not sure if its the same point that the gauges read from
 
since the balance shafts are still in, it is the unit. If it has been rigged, so to speak, just replace it with the next oil change. If the car was actually running that high on the oil pressure, you would be blowing it all over the engine bay and blowing oil seals.

As far as any other technical advice, I would just wire it stock and if you want to put another meter in the car for back up, they usually come with instructions or a more experienced member can surely point you in the right direction for a secondary unit.
 
i ran into a problem i went to buy a new sending unit and they didn't have any that would work other then for a light and i haven't really a need to put a new gauge in so does anyone know where i can get a sending unit?
 
Bringing this back real quick. What is the max acceptable oil psi for the end of a WOT pull. I'm seeing about 90psi at 7k according to my finicky AEM guage then seens to drop down to 75ish at higher rpm then that and i have BS delete and ported ofh. I am using a thicker oil though. 20w50
 
Bringing this back real quick. What is the max acceptable oil psi for the end of a WOT pull. I'm seeing about 90psi at 7k according to my finicky AEM guage then seens to drop down to 75ish at higher rpm then that and i have BS delete and ported ofh. I am using a thicker oil though. 20w50

I have a similar question that requires the same answer so i hope somone can shed some knowledge
 
I would think maximum pressure would depend on your setup. Obviously some turbocharges would lower this threashold. Where are you takingh a reading of the oil pressure?
 
Last edited:
Bringing this back real quick. What is the max acceptable oil psi for the end of a WOT pull. I'm seeing about 90psi at 7k according to my finicky AEM guage then seens to drop down to 75ish at higher rpm then that and i have BS delete and ported ofh. I am using a thicker oil though. 20w50

I really hate the idea of an oil line in the cabin but perhaps you could run a mech gauge just temporarily. Compare it to the AEM unit.
 
I'm sort of in the same boat as Urbansmoker as well actually, I've got a 1g 6bolt with the balance shafts removed and the oil pressure is rather high which somewhat scares me. I think the oil filter housing may need to be ported on my setup but I'd like to know the safe min/max pressures to run before worrying.
 
I'm taking my measurement from where the factory sending unit used to be located. I have a BB turbo. The guage reads 90psi but logs show a max of 75, but the logs have been inaccurate due to voltage offsets. I see 30psi at 1k rpm when hot.65-75 when cold at idle. My ofh is already ported but maybe it needs a little more? I am gonna get a kiggley hla maybe that will help a few psi.
 
My prosport pegs out on oil pressure (100psi gauge) and stays there at full boost from 4k to redline, but I've yet to port my oil filter housing which is why I'm considering doing so now. Do you think the HLA + OFH Port is the direction you'd go in that case Urban or would you simply do a port and review, then decide on the HLA?
 
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