D16Z6 Oil Pressures
11-17-2006, 09:08 AM
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D16Z6 Oil Pressures
I just installed an AM Oil Pressure gauge. My pressure at warm idle is at 28-29psi and at WOT 85-92psi.
I was hoping if someone knew what my pressures should be, my feeling is that the idle pressure is a little low. Thanks for the info.
I was hoping if someone knew what my pressures should be, my feeling is that the idle pressure is a little low. Thanks for the info.
11-17-2006, 09:16 AM
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Re: D16Z6 Oil Pressures (solo-x)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by solo-x »</TD></TR><TR><TD CLASS="quote">RTFM?</TD></TR></TABLE>
Yes this is the only Forum that will have the race pressures. This is a race engine. running H4.
Yes this is the only Forum that will have the race pressures. This is a race engine. running H4.
11-17-2006, 09:28 AM
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Re: D16Z6 Oil Pressures (cibola)
I am experiencing similar oil pressures in my d16z6
30psi warm/idle seems a little high (but it what I am seeing as well)
According to the Factory Service Manual
at idle: 10 PSI min
3000 RPM: 50 PSI min
the common consenus is that the max oil pressure is around 75.
But my experience on track has been that, while my oil pressure starts (at WOT)at around 95 psi, as the oil temp creeps near 250 to 300 the oil pressure starts to fall to 75 psi. which is where I would like to see it.
(additionally concerning to me is that my cold pressures at >95 at idle until it warms up then it settles down to >30 at idle. I am also seeing >90 psi at 3000 RPMs)
I'm running mobil1 10w30. I haven't tried 5w20 yet.
30psi warm/idle seems a little high (but it what I am seeing as well)
According to the Factory Service Manual
at idle: 10 PSI min
3000 RPM: 50 PSI min
the common consenus is that the max oil pressure is around 75.
But my experience on track has been that, while my oil pressure starts (at WOT)at around 95 psi, as the oil temp creeps near 250 to 300 the oil pressure starts to fall to 75 psi. which is where I would like to see it.
(additionally concerning to me is that my cold pressures at >95 at idle until it warms up then it settles down to >30 at idle. I am also seeing >90 psi at 3000 RPMs)
I'm running mobil1 10w30. I haven't tried 5w20 yet.
11-17-2006, 03:28 PM
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Re: D16Z6 Oil Pressures (cibola)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cibola »</TD></TR><TR><TD CLASS="quote">Yes this is the only Forum that will have the race pressures. This is a race engine. running H4. </TD></TR></TABLE>
sorry, my ESP isn't working today. how 'bout including how tight/loose your motor is built? if you've modified the oil pump any? what RPM you're at WOT and seeing 85-92psi? what weight oil you are using? can you now see why i thought you were some hapless troll? no offense, but your original post left out 95% of the pertinent information that is necessary for a worthwhile answer. ya got a z6 that has oil pressure. the oil pressure goes up with rev's. congrats, your motor works!
sorry, my ESP isn't working today. how 'bout including how tight/loose your motor is built? if you've modified the oil pump any? what RPM you're at WOT and seeing 85-92psi? what weight oil you are using? can you now see why i thought you were some hapless troll? no offense, but your original post left out 95% of the pertinent information that is necessary for a worthwhile answer. ya got a z6 that has oil pressure. the oil pressure goes up with rev's. congrats, your motor works!
11-20-2006, 02:25 PM
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Re: D16Z6 Oil Pressures (cibola)
Sounds good to me. My y8 has 90-100 psi cold, i shimmed my oil pump a tad though. Warm idle is 30ish and higher rpm's are around 75 ish warmed up. Not a z6, but basicaly they are the same.
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11-20-2006, 07:50 PM
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Re: D16Z6 Oil Pressures (coneheadsracing)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coneheadsracing »</TD></TR><TR><TD CLASS="quote">Sounds good to me. My y8 has 90-100 psi cold, i shimmed my oil pump a tad though. Warm idle is 30ish and higher rpm's are around 75 ish warmed up. Not a z6, but basicaly they are the same. </TD></TR></TABLE>
What does shimming the oil pump do? cover the bypass somehow?
What does shimming the oil pump do? cover the bypass somehow?
11-21-2006, 09:01 AM
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Re: D16Z6 Oil Pressures (Chris F)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chris F »</TD></TR><TR><TD CLASS="quote">
What does shimming the oil pump do? cover the bypass somehow?</TD></TR></TABLE>
Increases pressure on the spring. I have a spare pump in the shop and I can try to get pics for you if you want Chris, but it's pretty straightforward. The only issue is, there's no data (that I know of) that says "x" shim thickness increases pressure by "y". I think people just put a small washer in there and call it good.
$.02
What does shimming the oil pump do? cover the bypass somehow?</TD></TR></TABLE>
Increases pressure on the spring. I have a spare pump in the shop and I can try to get pics for you if you want Chris, but it's pretty straightforward. The only issue is, there's no data (that I know of) that says "x" shim thickness increases pressure by "y". I think people just put a small washer in there and call it good.
$.02
11-21-2006, 11:34 AM
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Re: D16Z6 Oil Pressures (johng)
yep, pretty much what i did. I don't really think it's necessary. But i like to try things out. There is a company that will bore out your oil pump, and then increase your pressure if you are looking for that.
Has anyone ever figured out the flaw with the d-series and spun bearings. I've only had one go, that was na with 140,000 plus miles, with lots of 130mph runs.... yes i was stupid and younger... the two recent y8's i've had turboed at 15 psi, stock and that made it through four track days this year.
My dad said told me when you are lifting at high rpm's, that hondas love, you are trying to rip the piston top off. Makes sense, just curious how much it affects our tiny pistons, and if maybe that is an issue. Only other thing i can come up with is people do like i used to, high rpm's for exteneded times.... like running out fourth.... lots of heat.
Has anyone ever figured out the flaw with the d-series and spun bearings. I've only had one go, that was na with 140,000 plus miles, with lots of 130mph runs.... yes i was stupid and younger... the two recent y8's i've had turboed at 15 psi, stock and that made it through four track days this year.
My dad said told me when you are lifting at high rpm's, that hondas love, you are trying to rip the piston top off. Makes sense, just curious how much it affects our tiny pistons, and if maybe that is an issue. Only other thing i can come up with is people do like i used to, high rpm's for exteneded times.... like running out fourth.... lots of heat.
11-21-2006, 09:54 PM
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Re: D16Z6 Oil Pressures (coneheadsracing)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coneheadsracing »</TD></TR><TR><TD CLASS="quote">
My dad said told me when you are lifting at high rpm's, that hondas love, you are trying to rip the piston top off. Makes sense, just curious how much it affects our tiny pistons, and if maybe that is an issue. Only other thing i can come up with is people do like i used to, high rpm's for exteneded times.... like running out fourth.... lots of heat.</TD></TR></TABLE>
That's what I was thinking about recently. When you lift at high RPMs, say because you don't want to upshift, just to downshift for the next corner, the car seems to rock and jerk back and forth, RPMs do the same. Doesn't that potentially lead to valve float or anything like that?
I wonder if there is a better way to do it while at the track...clutch in a little bit when you depress the gas?
My dad said told me when you are lifting at high rpm's, that hondas love, you are trying to rip the piston top off. Makes sense, just curious how much it affects our tiny pistons, and if maybe that is an issue. Only other thing i can come up with is people do like i used to, high rpm's for exteneded times.... like running out fourth.... lots of heat.</TD></TR></TABLE>
That's what I was thinking about recently. When you lift at high RPMs, say because you don't want to upshift, just to downshift for the next corner, the car seems to rock and jerk back and forth, RPMs do the same. Doesn't that potentially lead to valve float or anything like that?
I wonder if there is a better way to do it while at the track...clutch in a little bit when you depress the gas?
11-22-2006, 05:57 AM
#12
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Re: D16Z6 Oil Pressures (blackdc5)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackdc5 »</TD></TR><TR><TD CLASS="quote">
That's what I was thinking about recently. When you lift at high RPMs, say because you don't want to upshift, just to downshift for the next corner, the car seems to rock and jerk back and forth, RPMs do the same. Doesn't that potentially lead to valve float or anything like that?
I wonder if there is a better way to do it while at the track...clutch in a little bit when you depress the gas?</TD></TR></TABLE>
Lift smoother off the gas. Really. You don't want to disengage the clutch if you don't plan on shifting.. it ends up being less smooth when you're getting back on the gas, and it just wears out the clutch unnecessarily.
If you have a lot of jerking, check for worn motor mounts.
The valves don't care if you're on the gas or not, they won't float. The amount of force on the pistons high RPM, closed throttle isn't significant compared to the forces at high RPM at WOT. I wouldn't worry about that either.
-Chris
That's what I was thinking about recently. When you lift at high RPMs, say because you don't want to upshift, just to downshift for the next corner, the car seems to rock and jerk back and forth, RPMs do the same. Doesn't that potentially lead to valve float or anything like that?
I wonder if there is a better way to do it while at the track...clutch in a little bit when you depress the gas?</TD></TR></TABLE>
Lift smoother off the gas. Really. You don't want to disengage the clutch if you don't plan on shifting.. it ends up being less smooth when you're getting back on the gas, and it just wears out the clutch unnecessarily.
If you have a lot of jerking, check for worn motor mounts.
The valves don't care if you're on the gas or not, they won't float. The amount of force on the pistons high RPM, closed throttle isn't significant compared to the forces at high RPM at WOT. I wouldn't worry about that either.
-Chris
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