FS-DE Oil System
- Thread starter MP3racer
- Start date
Sorry its not the spring tension thats the problem its the tolerances in the impeller housing that are way out and are brought back to better then spec making pump more efficient regardless of viscosity. External reg, is not really needed but well worth it for what I am doing. I have actually noticed motor is quieter not so much valve noise as prior to job. Very Happy with it.
And your point with this comment is what?OK.
FYI..... thats why its call a pressure spring.
The increase in pressure has nothing to do with this mod really.
The increase in pressure , if any, is a Byproduct of having a better tolerance level in the Planetary gears that drive the pump....
....And Removing the Bypass spring and running the External Regulator allows the pump to work more efficiently and not cause Cavitation inside the pump which will lead to premature bearing wear under prolongd Higher than normal RPM loads.
Another benefeit of the External PRV is being able to set your pressure where you would like it to run for your particular application.
Cavitation is when a pump rotates, produces pressure, but doesn't produce the GPM at a specific RPM or no GPM at all
Unless ur reducing the GPM of the pump, its still gonna cavitate as much as the stock system as the system can only flow so much GPM before the pressure rise.
Unless ur reducing the GPM of the pump, its still gonna cavitate as much as the stock system as the system can only flow so much GPM before the pressure rise.
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I don't see the oil pump is cavitating.
SUBJECT : Cavitation \
Cavitation means that cavities or bubbles are forming in the liquid that we're pumping. These cavities form at the low pressure or suction side of the pump, causing several things to happen all at once:
The cavities or bubbles will collapse when they pass into the higher regions of pressure, causing noise, vibration, and damage to many of the components.
We experience a loss in capacity.
The pump can no longer build the same head (pressure)
The pump's efficiency drops.
The cavities form for five basic reasons and it's common practice to lump all of them into the general classification of cavitation.
Vaporization
Air ingestion (Not really cavitation, but has similar symptoms)
Internal recirculation
Flow turbulence
The Vane Passing Syndrome
Vaporization .
SUBJECT : Cavitation \
Cavitation means that cavities or bubbles are forming in the liquid that we're pumping. These cavities form at the low pressure or suction side of the pump, causing several things to happen all at once:
The cavities or bubbles will collapse when they pass into the higher regions of pressure, causing noise, vibration, and damage to many of the components.
We experience a loss in capacity.
The pump can no longer build the same head (pressure)
The pump's efficiency drops.
The cavities form for five basic reasons and it's common practice to lump all of them into the general classification of cavitation.
Vaporization
Air ingestion (Not really cavitation, but has similar symptoms)
Internal recirculation
Flow turbulence
The Vane Passing Syndrome
Vaporization .
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Sorry, but I am going to jump in here for a minute....the cavitation occurs due to where the OE pressure relief valve (PRV) returns the unwanted oil...that is directly into the planetary gears of the pump....the bypassed oil is foamed somewhat causing the cavitation to occur. In removing the OE PRV and replacing it with an external unit the bypassed oil can be returned to the pan where the foamed oil will have little to no effect on the system......
Tom
Are you guys still accepting oil pumps? Everyday I keep seeing my oil pressure gauge reading lower and lower (checked oil level yesterday and it was only about 1/4 qt low) so I don't know whether it's my pressure sender or oil pump that's on it's way out (what else would cause low oil pressure?). I'll be installing a new oil pressure gauge soon but I still might try to get one of those improved oil pumps.
jimmysuite
Member
- :
- 2003 Mazda Protege5
I want to sent a pump out to you guys within the next month.....
Maxx Mazda
Contributor
- :
- Stock P5
This thread is confusing me... I have the TOGA high flow oil pump, and I have no idea what exactly TOGA does to the pump, but I did get much higher pressure than the stocker. Hot idle, around 700RPM, I get about 40psi, where on the stocker it was like 25. Hot redline is close to 80psi, stock pump was a hair over 55 IIRC. I know many things account for oil pressure, such as bearing tolerances, etc. But I wonder what they could have done with the pump to make the pressure higher? Maybe it could be done with the stocker?
Ok ok... that makes sense to me now. that is definetly a way that air can be introduced into the pump.
So you are blocking the stock PRV?
I was tryin to get an explaination on what he thinks was causing cavitation of the pump.
Foamy oil is a way just like he explained. I just hope that he blocked the stock PRV passage or the foamy oil is still gonna make it way into the pump.
You can increase your pressure simply by adding a higher rate spring to the bypass valve as others have stated.....however, this really does nothing to help prevent the problem seen with consistent (15 minutes or more) medium to high rpm use. Yes the pressure will be higher at start up (and if the motor is rested for a bit) but with continued use the pressure will drop without warning....
Yes, we are still accepting pumps. Being in the middle of the race season the return time may be longer due to factors here in our shop and at the coating shop.
I hate to say but the problem may not be with your pump but with a main bearing that is starting to go..... causing larger and larger clearances and causing the oil pressure to drop...I would be very careful...if it goes could be catastrophic for the motor.....(shrug)
Yeah, it stuff like that I'm afraid of in which case it's good I'm saving up for a new motor. I'm going to try a new oil pressure gauge (need to get one anyway) and them follow up with compression and leakdown tests. Hopefully something will yield an explanation. Either way, if I do find myself with an extra oil pump I'll be sure to send it your way.
MP3Performance
Member
- :
- Mazda MP3
^^^
I had the same problem with my oil pressure gauge. Over a couple months it started reading lower and lower. Eventually it didn't read anything at all (maybe max 5 psi). I sent the gauge to be checked under warranty, and I got a new gauge to try out. But it didn't help at all. I then took off the oil pressure sending unit to inspect it and saw the problem. Some teflon tape came off and started to plug up the pressure sender hole (which was my fault for taping it wrong in the first place). I then replaced the sender and ever since the oil pressure gauge has been perfect. I should also mention that I have a oil temp and oil pressure sensor hooked up to an oil filter adapter plate.
I had the same problem with my oil pressure gauge. Over a couple months it started reading lower and lower. Eventually it didn't read anything at all (maybe max 5 psi). I sent the gauge to be checked under warranty, and I got a new gauge to try out. But it didn't help at all. I then took off the oil pressure sending unit to inspect it and saw the problem. Some teflon tape came off and started to plug up the pressure sender hole (which was my fault for taping it wrong in the first place). I then replaced the sender and ever since the oil pressure gauge has been perfect. I should also mention that I have a oil temp and oil pressure sensor hooked up to an oil filter adapter plate.
This is exactly what I'm going to be doing. I've actually had a sandwich plate for sometime now but the threading in one of the ports is messed up (why the company gave aluminum plugs with an aluminum plate is beyond me) so I have to fix it. I've already ordered a 1/8 NPT tap and some new stainless steel plugs and I'm in the process of getting some new gauges. Hopefully soon I'll be able to figure out if it was just that gauge afterall.
