Mazmarts oil pressure bypass install with some surprising findings!
#102
#104
went back to srsly broke
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Responding mostly to hiflite's previous post - not quoting since it's GINORMOUSSS!
To my understanding, the difference in viscosity of 20 weight vs 40 weight at normal operating temperature (180-220) is pretty close, so I would imagine the loss of flow would be relatively minimal. And 0W doesn't always mean it has lower viscosity - it sometimes has the same, just better flow rate at lower temperatures (I think below 32F).
I'll look into the Mazmart oil pump in the future though, better safe than sorry!
To my understanding, the difference in viscosity of 20 weight vs 40 weight at normal operating temperature (180-220) is pretty close, so I would imagine the loss of flow would be relatively minimal. And 0W doesn't always mean it has lower viscosity - it sometimes has the same, just better flow rate at lower temperatures (I think below 32F).
I'll look into the Mazmart oil pump in the future though, better safe than sorry!
#105
Yep i am still trucking! Just sent my 2nd uoa in.
Hiflite--man you are thinking to much!! Making me dizzy and my head hurts.
You see the way i understand it is that our oil pump is a constant volume pump. No matter what the viscosity of the oil. it is going to pump the same volume of oil. Also that is the reason pressure goes up with heavier viscosity! You are pumping the same amount (flow) of a heavier oil --so more resistance --so more pressure required to flow the same volumne.
Even with the oem bypass the max oil psi occurs much higher than 4-5K so using Paul's Pump it Up mod will not reduce oil flow at all. The pump actually seems to have the capacity to continue to increase the pressure a little even when the by pass is open some. Remember it is not an open/closed bypass--its gradual.
I need my meds now.
OD
Hiflite--man you are thinking to much!! Making me dizzy and my head hurts.
You see the way i understand it is that our oil pump is a constant volume pump. No matter what the viscosity of the oil. it is going to pump the same volume of oil. Also that is the reason pressure goes up with heavier viscosity! You are pumping the same amount (flow) of a heavier oil --so more resistance --so more pressure required to flow the same volumne.
Even with the oem bypass the max oil psi occurs much higher than 4-5K so using Paul's Pump it Up mod will not reduce oil flow at all. The pump actually seems to have the capacity to continue to increase the pressure a little even when the by pass is open some. Remember it is not an open/closed bypass--its gradual.
I need my meds now.
OD
#106
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Mazda totally re-engineered their MOP system for a reason, and re-introduced a Center Oil Nozzle/Weeper in the Series II RX-8 which they have always had in every other rotary since they started Direct Apex Seal Oiling.
The S1 RX-8 was the first not to have a Middle Nozzle.
FC RX-7 was the first to use a Middle Nozzle.
Charlie, have you seen any concave wear on your Apex Seals like Paul (Mr E) at Mazmart have shown?
The S1 RX-8 was the first not to have a Middle Nozzle.
FC RX-7 was the first to use a Middle Nozzle.
Charlie, have you seen any concave wear on your Apex Seals like Paul (Mr E) at Mazmart have shown?
uh oh?
Have yall thought about what Paul has said?
They really havent seen engine FAILURE due to poor lubrication. They have seen wear/tear from lubrication issues that would sooner or later result in engine failure if not addressed.
The enige FAILURES are more from carboning/gunk issues if i remember correctly.
Weird-- but i am having more omp oil useage since i installed the Paul's Pump em Up. I dont know how that happened--I am probably just crazy.
Have yall thought about what Paul has said?
They really havent seen engine FAILURE due to poor lubrication. They have seen wear/tear from lubrication issues that would sooner or later result in engine failure if not addressed.
The enige FAILURES are more from carboning/gunk issues if i remember correctly.
Weird-- but i am having more omp oil useage since i installed the Paul's Pump em Up. I dont know how that happened--I am probably just crazy.
Denny, do you think that the increased pressure might be force-feeding your MOP? Alternately, since you're using a high viscosity oil, before the OP mod, could your MOP been starved for feed oil?
Last edited by longpath; 01-28-2010 at 10:30 PM.
#107
I dont have any way of proving that the rotors are better balanced with a higher oil pressure---wish I did! Silkilicious does continue. I hate when I say such subjective things. It is I was just impressed and too me it was really apparate---but hey I am weird anyway.
Thats the thing about the omp. It is also a fixed volume pump. maybe it wasnt getting enough oil to itbefore? But wouldnt that cause air bubbles in the lines? I dont have a clue and it doesnt make sense. Maybe I am imagining this--but it sure seems like it. I am having to add more oil now a days.
OD
Thats the thing about the omp. It is also a fixed volume pump. maybe it wasnt getting enough oil to itbefore? But wouldnt that cause air bubbles in the lines? I dont have a clue and it doesnt make sense. Maybe I am imagining this--but it sure seems like it. I am having to add more oil now a days.
OD
#108
Nature vs. Nurture
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I got my car on Oct 31, probably with 5W20. I changed it to 5W30 and then to 10W30 and consistently use very little oil.
#109
Super Moderator
Thats the thing about the omp. It is also a fixed volume pump. maybe it wasnt getting enough oil to itbefore? But wouldnt that cause air bubbles in the lines? I dont have a clue and it doesnt make sense. Maybe I am imagining this--but it sure seems like it. I am having to add more oil now a days.
OD
OD
#110
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Yep i am still trucking! Just sent my 2nd uoa in.
Hiflite--man you are thinking to much!! Making me dizzy and my head hurts.
You see the way i understand it is that our oil pump is a constant volume pump. No matter what the viscosity of the oil. it is going to pump the same volume of oil. Also that is the reason pressure goes up with heavier viscosity! You are pumping the same amount (flow) of a heavier oil --so more resistance --so more pressure required to flow the same volumne.
Even with the oem bypass the max oil psi occurs much higher than 4-5K so using Paul's Pump it Up mod will not reduce oil flow at all. The pump actually seems to have the capacity to continue to increase the pressure a little even when the by pass is open some. Remember it is not an open/closed bypass--its gradual.
I need my meds now.
OD
Hiflite--man you are thinking to much!! Making me dizzy and my head hurts.
You see the way i understand it is that our oil pump is a constant volume pump. No matter what the viscosity of the oil. it is going to pump the same volume of oil. Also that is the reason pressure goes up with heavier viscosity! You are pumping the same amount (flow) of a heavier oil --so more resistance --so more pressure required to flow the same volumne.
Even with the oem bypass the max oil psi occurs much higher than 4-5K so using Paul's Pump it Up mod will not reduce oil flow at all. The pump actually seems to have the capacity to continue to increase the pressure a little even when the by pass is open some. Remember it is not an open/closed bypass--its gradual.
I need my meds now.
OD
Of course, as Paul points out, the hydrodynamic properties of the oil are not to be neglected and there have been many good discussions as to why the ~40W oils are better in this regard than 20W. As a minor point perhaps, stupendously huge flow, that you would get at say 500 psi, would also destroy bearing lubrication properties.
Yeah, I thimk two much! Meds help ....
#111
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Responding mostly to hiflite's previous post - not quoting since it's GINORMOUSSS!
To my understanding, the difference in viscosity of 20 weight vs 40 weight at normal operating temperature (180-220) is pretty close, so I would imagine the loss of flow would be relatively minimal. And 0W doesn't always mean it has lower viscosity - it sometimes has the same, just better flow rate at lower temperatures (I think below 32F).
I'll look into the Mazmart oil pump in the future though, better safe than sorry!
To my understanding, the difference in viscosity of 20 weight vs 40 weight at normal operating temperature (180-220) is pretty close, so I would imagine the loss of flow would be relatively minimal. And 0W doesn't always mean it has lower viscosity - it sometimes has the same, just better flow rate at lower temperatures (I think below 32F).
I'll look into the Mazmart oil pump in the future though, better safe than sorry!
#113
I think I understand what you are saying ole hard thinker!
You are getting max oil pressure at 4-5K? We havent seen that at oil temps of 180F and above. Me thinks it is over 6K that the max pressure is being seen here at the above temps.
True in that the oem bypass pressure will be reached sooner with a higher viscosity of oil OR a cooler oil temp(which affects the viscosity etc) and since we have a pressure regulated system it would be very lodgical to say that if the regulator opens sooner then there will be less flow since the bypass is dumping. But is that all that happens?
I think also you have to consider that the oil pump with the higher viscosity oil can produce more overall pressure? Would that not change things?
Let me preach on it...........
Ok if with a 20 w oil the bypass doesnt open for example until 6K but the 40W will open at 5K--If I am understanding correctly what you are saying is from 5K to 6K there would be in comparison less oil flow/volume pumping between 5-6K?
If that is a correct interprtation then I believe one thing has not been remembered. The 40 w oil example will increase in pressure between 5-6K even though the by pass has been cracked open. Once again it is not an on/off valve--its a gradual opening. The overall pressure increase the 40 w allows the pump to make provides makes up for the earier bypass opening?
Does that make sense.
More meds---Jeez.
You are getting max oil pressure at 4-5K? We havent seen that at oil temps of 180F and above. Me thinks it is over 6K that the max pressure is being seen here at the above temps.
True in that the oem bypass pressure will be reached sooner with a higher viscosity of oil OR a cooler oil temp(which affects the viscosity etc) and since we have a pressure regulated system it would be very lodgical to say that if the regulator opens sooner then there will be less flow since the bypass is dumping. But is that all that happens?
I think also you have to consider that the oil pump with the higher viscosity oil can produce more overall pressure? Would that not change things?
Let me preach on it...........
Ok if with a 20 w oil the bypass doesnt open for example until 6K but the 40W will open at 5K--If I am understanding correctly what you are saying is from 5K to 6K there would be in comparison less oil flow/volume pumping between 5-6K?
If that is a correct interprtation then I believe one thing has not been remembered. The 40 w oil example will increase in pressure between 5-6K even though the by pass has been cracked open. Once again it is not an on/off valve--its a gradual opening. The overall pressure increase the 40 w allows the pump to make provides makes up for the earier bypass opening?
Does that make sense.
More meds---Jeez.
#114
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I think I understand what you are saying ole hard thinker!
Hiflite: Must be the meds!
You are getting max oil pressure at 4-5K? We havent seen that at oil temps of 180F and above. Me thinks it is over 6K that the max pressure is being seen here at the above temps.
Hiflite: Odd, I'm not measuring that at 200F, but gage calibrations and such play a role too. The point is that the oil system operated in two distinctly different modes: bypass open, bypass closed. It doesn't matter how much the bypass valve opens, the "equations of state" become totally different: "flow = (rpm x (oil pump displacement / rev))" vs. "pressure = constant".
True in that the oem bypass pressure will be reached sooner with a higher viscosity of oil OR a cooler oil temp(which affects the viscosity etc) and since we have a pressure regulated system it would be very lodgical to say that if the regulator opens sooner then there will be less flow since the bypass is dumping. But is that all that happens?
Hiflite: I hope so ...
I think also you have to consider that the oil pump with the higher viscosity oil can produce more overall pressure? Would that not change things?
Hiflite: With the bypass open, no. Closed? Maybe so. The lobes of our displacement oil pumps have slight gaps between them, which means a heavier weight oil would pump slightly more volume per shaft rotation than with a lighter weight.
Let me preach on it...........
Hiflite: Let me get some nickels for the collection plate ...
Ok if with a 20 w oil the bypass doesnt open for example until 6K but the 40W will open at 5K--If I am understanding correctly what you are saying is from 5K to 6K there would be in comparison less oil flow/volume pumping between 5-6K?
Hiflite: Yep!
If that is a correct interprtation then I believe one thing has not been remembered. The 40 w oil example will increase in pressure between 5-6K even though the by pass has been cracked open. Once again it is not an on/off valve--its a gradual opening. The overall pressure increase the 40 w allows the pump to make provides makes up for the earier bypass opening?
Hiflite: The instant the bypass valve cracks open, any possible pumping effeciency gain from the 40 wt in the oil pump goes away. Besides if one argues that reducing the lobe leakage results in better volumes (pressure at a given rpm), then you also have to argue that there is less leakage around the front op regulator piston, thereby increasing pressure and causing the piston to open more than with the 20W.
Does that make sense.
Hiflite: Depends on the meds!
More meds---Jeez.
Hiflite: Saturday morning cartoons too!
Hiflite: Must be the meds!
You are getting max oil pressure at 4-5K? We havent seen that at oil temps of 180F and above. Me thinks it is over 6K that the max pressure is being seen here at the above temps.
Hiflite: Odd, I'm not measuring that at 200F, but gage calibrations and such play a role too. The point is that the oil system operated in two distinctly different modes: bypass open, bypass closed. It doesn't matter how much the bypass valve opens, the "equations of state" become totally different: "flow = (rpm x (oil pump displacement / rev))" vs. "pressure = constant".
True in that the oem bypass pressure will be reached sooner with a higher viscosity of oil OR a cooler oil temp(which affects the viscosity etc) and since we have a pressure regulated system it would be very lodgical to say that if the regulator opens sooner then there will be less flow since the bypass is dumping. But is that all that happens?
Hiflite: I hope so ...
I think also you have to consider that the oil pump with the higher viscosity oil can produce more overall pressure? Would that not change things?
Hiflite: With the bypass open, no. Closed? Maybe so. The lobes of our displacement oil pumps have slight gaps between them, which means a heavier weight oil would pump slightly more volume per shaft rotation than with a lighter weight.
Let me preach on it...........
Hiflite: Let me get some nickels for the collection plate ...
Ok if with a 20 w oil the bypass doesnt open for example until 6K but the 40W will open at 5K--If I am understanding correctly what you are saying is from 5K to 6K there would be in comparison less oil flow/volume pumping between 5-6K?
Hiflite: Yep!
If that is a correct interprtation then I believe one thing has not been remembered. The 40 w oil example will increase in pressure between 5-6K even though the by pass has been cracked open. Once again it is not an on/off valve--its a gradual opening. The overall pressure increase the 40 w allows the pump to make provides makes up for the earier bypass opening?
Hiflite: The instant the bypass valve cracks open, any possible pumping effeciency gain from the 40 wt in the oil pump goes away. Besides if one argues that reducing the lobe leakage results in better volumes (pressure at a given rpm), then you also have to argue that there is less leakage around the front op regulator piston, thereby increasing pressure and causing the piston to open more than with the 20W.
Does that make sense.
Hiflite: Depends on the meds!
More meds---Jeez.
Hiflite: Saturday morning cartoons too!
rpm.....40Wpsi......20Wpsi
----.....--------......--------
900.......18..............17
3000.....60..............53
4000.....72.............(64)
5000.....87.............(78)
6000.....94.............(84)
The () data are a guess. I wish I'd measured it, but too late for the moment. (Data anyone?) Assuming the stock bypass regulates to 80 psi, this chart for the stock system would look like:
rpm.....40Wpsi......20Wpsi
----.....--------......--------
900.......18..............17
3000.....60..............53
4000.....72.............(64)
5000....(80)...........(78)
6000....(80)...........(80)
The 20W is staying in the "good" range of flow longer than the 40W case. Again, flow it not the only thing to consider. With a stock system, I'd have no worries going to 30W, some worries going to 40W, and a lotta worries going to 50W. If I wanted to go to 50W, I'd consider the Mazmart mod mandatory. Just my opinion of course, but every step of this week's working-the-problem seems to say this mod is a really good idea, especially if you want to use heavier weight oils.
#115
With the bypass open, no. Closed? Maybe so. The lobes of our displacement oil pumps have slight gaps between them, which means a heavier weight oil would pump slightly more volume per shaft rotation than with a lighter weight.
#117
I finally see what you are thinking!!!!!!
The tables did it--appreciate the work.
Let me see if i can point out what i am trying to say.
Your table indicates that the max pressure obtained is totally regulated by the bypass. Once the 80psi is reached the pressure cannot go any higher according to the oem table.
What i am saying is that is not entirely true. For example if the bypass is pre set to be fully open at 80psi, with a 40 weight oil our oil pump has the capacity to increase the pressure even more. Not much mind you but some none the less. Its not a direct stop like that.
We both 100% agree though that the Mazmart (Paul's Pump em Up) mod is an extremely good mod to do.!!
olddragger
The tables did it--appreciate the work.
Let me see if i can point out what i am trying to say.
Your table indicates that the max pressure obtained is totally regulated by the bypass. Once the 80psi is reached the pressure cannot go any higher according to the oem table.
What i am saying is that is not entirely true. For example if the bypass is pre set to be fully open at 80psi, with a 40 weight oil our oil pump has the capacity to increase the pressure even more. Not much mind you but some none the less. Its not a direct stop like that.
We both 100% agree though that the Mazmart (Paul's Pump em Up) mod is an extremely good mod to do.!!
olddragger
#118
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What i am saying is that is not entirely true. For example if the bypass is pre set to be fully open at 80psi, with a 40 weight oil our oil pump has the capacity to increase the pressure even more. Not much mind you but some none the less. Its not a direct stop like that.
Can you expand on this thought a little more? It's not clear to me why the pressure would be higher based on different viscosities if the relief valve is fully open at 80psi. Shouldn't the pressure max out at the same level, 80 psi in this case, for any viscosity?
#119
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I finally see what you are thinking!!!!!!
The tables did it--appreciate the work.
Let me see if i can point out what i am trying to say.
Your table indicates that the max pressure obtained is totally regulated by the bypass. Once the 80psi is reached the pressure cannot go any higher according to the oem table.
What i am saying is that is not entirely true. For example if the bypass is pre set to be fully open at 80psi, with a 40 weight oil our oil pump has the capacity to increase the pressure even more. Not much mind you but some none the less. Its not a direct stop like that.
We both 100% agree though that the Mazmart (Paul's Pump em Up) mod is an extremely good mod to do.!!
olddragger
The tables did it--appreciate the work.
Let me see if i can point out what i am trying to say.
Your table indicates that the max pressure obtained is totally regulated by the bypass. Once the 80psi is reached the pressure cannot go any higher according to the oem table.
What i am saying is that is not entirely true. For example if the bypass is pre set to be fully open at 80psi, with a 40 weight oil our oil pump has the capacity to increase the pressure even more. Not much mind you but some none the less. Its not a direct stop like that.
We both 100% agree though that the Mazmart (Paul's Pump em Up) mod is an extremely good mod to do.!!
olddragger
#120
Registered
It's really hard to convince people that this is of any benefit and most think it's a negative with comments like, "you are going to get oil leaks". Doesn't matter what I say, in their minds, I #@C$%d up by installing this kit. I don't know all the technical details like you guys do. I'm lucky enough to have OD close by so I trust his judgement in a lot of things. I've always hated the lack of oil pressure on this car and when Denny told me about the mod, I couldn't wait to pump it up. So now it's on "viagra" as HiFlite says and seeing the oil pressure riding at 90-100 as I'm driving on the interstate makes me satisfied that lubrication is at a more proper number. So you guys please keep banging out the details and I will just enjoy the ride. Can't wait to see how she reacts when I get her on the track in March at Road Atlanta. I want to know if there is any change in my oil consumption. I'm hoping there is more.
#121
Hiflite---I do love no brainers as that does directly match my intellectual ability
Hey---- i know a good example I just remembered. 9K converted from dual coolers to a single cooler and in doing so lost a lot of the bends and turns the oem system has. As a result, that is relative to this conversation, he was able to see 90psi on the oem bypass! Why didnt I remember this before. It would have help unscramble my old brain.
Now back to the mod---glad you agree Don. I to am interested in what is going to be seen in march at Road Atlanta. I have not observed or seen one single negative thing about this mod.
One day young folks are going to start listening to us old timers----------maybe?
OD
Hey---- i know a good example I just remembered. 9K converted from dual coolers to a single cooler and in doing so lost a lot of the bends and turns the oem system has. As a result, that is relative to this conversation, he was able to see 90psi on the oem bypass! Why didnt I remember this before. It would have help unscramble my old brain.
Now back to the mod---glad you agree Don. I to am interested in what is going to be seen in march at Road Atlanta. I have not observed or seen one single negative thing about this mod.
One day young folks are going to start listening to us old timers----------maybe?
OD
#122
Registered
This is a short 13 sec vid showing the increased oil pressure. I have more vid but I don't think it's good enough to present. I'm going to shoot more using a camera mount with the entire warm up sequence and a short drive. That should be good enough to bore you to sleep.
http://vimeo.com/9120501
http://vimeo.com/9120501
Last edited by SilverEIGHT; 02-01-2010 at 04:19 AM.
#123
RX-8 Believer
Oh Jeeze, my head has gone loopy after reading all the pages of this post!
As a brand new owner of an '06 w/34k miles, this thread scares the hell outta me! Especially since I have no clue of it's oil usage history, but a big 5w-20 written in feminine cursive on the manual cover. Now I'm itchin' to do a compression check! (Oh and when I do a search for more on this topic, I get an overwhelming amount of thread results...if you've got specific stickies and links I'd sure appreciate it!)
Here's my question though...say we do this mod, (which sounds great btw) and up the oil viscosity used, will this void the OEM or additional warranty on the car? While I have confidence I could do this mod easily and correctly, I would still rather it age out gracefully and the OEMs rebuild it, than for me to pay ~6k in parts to rebuild it myself!
As a brand new owner of an '06 w/34k miles, this thread scares the hell outta me! Especially since I have no clue of it's oil usage history, but a big 5w-20 written in feminine cursive on the manual cover. Now I'm itchin' to do a compression check! (Oh and when I do a search for more on this topic, I get an overwhelming amount of thread results...if you've got specific stickies and links I'd sure appreciate it!)
Here's my question though...say we do this mod, (which sounds great btw) and up the oil viscosity used, will this void the OEM or additional warranty on the car? While I have confidence I could do this mod easily and correctly, I would still rather it age out gracefully and the OEMs rebuild it, than for me to pay ~6k in parts to rebuild it myself!
#124
Hey---- i know a good example I just remembered. 9K converted from dual coolers to a single cooler and in doing so lost a lot of the bends and turns the oem system has. As a result, that is relative to this conversation, he was able to see 90psi on the oem bypass! Why didnt I remember this before. It would have help unscramble my old brain.
Anyhow, the flow doesn't stop increasing when a bypass cracks open, it just increases at a reduced amount.
Last edited by PhillipM; 02-02-2010 at 07:37 AM.
#125
Out of NYC
iTrader: (1)
Oh Jeeze, my head has gone loopy after reading all the pages of this post!
As a brand new owner of an '06 w/34k miles, this thread scares the hell outta me! Especially since I have no clue of it's oil usage history, but a big 5w-20 written in feminine cursive on the manual cover. Now I'm itchin' to do a compression check! (Oh and when I do a search for more on this topic, I get an overwhelming amount of thread results...if you've got specific stickies and links I'd sure appreciate it!)
Here's my question though...say we do this mod, (which sounds great btw) and up the oil viscosity used, will this void the OEM or additional warranty on the car? While I have confidence I could do this mod easily and correctly, I would still rather it age out gracefully and the OEMs rebuild it, than for me to pay ~6k in parts to rebuild it myself!
As a brand new owner of an '06 w/34k miles, this thread scares the hell outta me! Especially since I have no clue of it's oil usage history, but a big 5w-20 written in feminine cursive on the manual cover. Now I'm itchin' to do a compression check! (Oh and when I do a search for more on this topic, I get an overwhelming amount of thread results...if you've got specific stickies and links I'd sure appreciate it!)
Here's my question though...say we do this mod, (which sounds great btw) and up the oil viscosity used, will this void the OEM or additional warranty on the car? While I have confidence I could do this mod easily and correctly, I would still rather it age out gracefully and the OEMs rebuild it, than for me to pay ~6k in parts to rebuild it myself!
There is almost no way to tell if you did this mod or not unless they check your oil pressure with a "real" gauge. or the Tech is smart enough to spot the oil pan gasket area.
So if I were you, I would get a compression test done first. BTW do NOT let the Dealership feed you with a "passed/failed", get the "EXACT" numbers and RPM and post them up here.