996 on track - watch that oil pressure!
01-04-2010, 06:01 PM
#47
Three Wheelin'
do you find you still get pressure drops with the increased oil cooling from the cup car cooler?
01-04-2010, 10:12 PM
#48
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Pete,
Of all those, only one had an X51 pan. It belongs to a good friend of mine, I've driven/been in the car before and after the pan, did not notice a difference from the pan alone.
I did not check oil levels on any of them, though the two C2s I've had have been filled to the top marker. Only one car I'm familiar with has a third radiator (this is the car w/the x51 pan), the needle generally stays at the high side of the 0 on 180. Anyway, my cars only have the two factory radiators, and run a similar temperature, however for longer sessions I either turn the A/C off or start short shifting, thus I don't have experience with the temp getting too far over this.
Of all those, only one had an X51 pan. It belongs to a good friend of mine, I've driven/been in the car before and after the pan, did not notice a difference from the pan alone.
I did not check oil levels on any of them, though the two C2s I've had have been filled to the top marker. Only one car I'm familiar with has a third radiator (this is the car w/the x51 pan), the needle generally stays at the high side of the 0 on 180. Anyway, my cars only have the two factory radiators, and run a similar temperature, however for longer sessions I either turn the A/C off or start short shifting, thus I don't have experience with the temp getting too far over this.
01-04-2010, 10:21 PM
#49
RL Community Team
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This car (02 C2) has a third radiator and never has temp issues - once it warms up the needle never moves even during a 25-60 minute race in 100 degree heat or 40 degree F cold.
I have an x51 996 also, and its pressure is always pegged at 5 bar - never budges even on the same "test" route that triggers the C2 to drop pressure. Too bad that engine isn't in my track car. But I'm with Ahmet - I think a lot of engines would be destroyed if a catastrophic drop in pressure were happening this frequently. I did the x51 pan only because it wasn't that expensive, and I was hopeful it might make some difference.
I have an x51 996 also, and its pressure is always pegged at 5 bar - never budges even on the same "test" route that triggers the C2 to drop pressure. Too bad that engine isn't in my track car. But I'm with Ahmet - I think a lot of engines would be destroyed if a catastrophic drop in pressure were happening this frequently. I did the x51 pan only because it wasn't that expensive, and I was hopeful it might make some difference.
01-04-2010, 11:06 PM
#50
Three Wheelin'
Pete,
Of all those, only one had an X51 pan. It belongs to a good friend of mine, I've driven/been in the car before and after the pan, did not notice a difference from the pan alone.
I did not check oil levels on any of them, though the two C2s I've had have been filled to the top marker. Only one car I'm familiar with has a third radiator (this is the car w/the x51 pan), the needle generally stays at the high side of the 0 on 180. Anyway, my cars only have the two factory radiators, and run a similar temperature, however for longer sessions I either turn the A/C off or start short shifting, thus I don't have experience with the temp getting too far over this.
Of all those, only one had an X51 pan. It belongs to a good friend of mine, I've driven/been in the car before and after the pan, did not notice a difference from the pan alone.
I did not check oil levels on any of them, though the two C2s I've had have been filled to the top marker. Only one car I'm familiar with has a third radiator (this is the car w/the x51 pan), the needle generally stays at the high side of the 0 on 180. Anyway, my cars only have the two factory radiators, and run a similar temperature, however for longer sessions I either turn the A/C off or start short shifting, thus I don't have experience with the temp getting too far over this.
as far as the pan goes... I know it defintely does something cause engines were blowing @ sebring and the guys who came back with new engines and the pan had no more blowouts this was happening on 911 3.4 cayman 3.4 and 911 3.6 motors... so it does something... I'm not seeing 2.5 and I drove the **** out of the car around the corners... with sticky tyres... I'm going to a BFgoodrich R1 this summer and that is a lot sticker... I wonder how the pressures will run... I also wonder why I don't get the pressure drops on the first 3 laps when the engine is @ normal temperature... 90
in my opinion I believe heat is the culprit here... when my engine temp needle is pointing strait up - 90 - my idle pressure is about 1.5 bar - maybe a tad higher 1.6 bar...
when the temp needle is pointing beyond the 0 we are about 103-106 C and the idle oil pressure is 1 bar... sometimes @ 0.9 bar..... temp makes a difference even at idle... so its time for cooler oil or better oil that doesn't lose pressure when it heats up... I seriously think a cup car oil cooler is my next mod...
01-04-2010, 11:32 PM
#51
Hi Guys.
Temps are not an issue - the needle is always just over the 180 mark regardless of whether it's 30 degrees or 100 degrees F out. I do have the third radiator kit, though. The oil pressure jumps around all the time - it's very easy to get it to do that, I can even drive on the street and jerk the car at speed and it will drop momentarily. The engine doesn't even need to be at the "just over 180" mark to have the drop occur. As for specs: the car is stock other than an M030 suspension, Nitto NT01 tires, Cobalt Friction race pads, Ate200 fluid, 0w-40 at the halfway mark, and runs with muffler bypasses and weighs 3200 with me in the car.
So I have the X51 oil pan on the way, and I will be interested to see if it makes any difference. It's so easy to reproduce, I will be able to report whether just the x51 pan does anything - other reports have said it does not. We'll see!
Temps are not an issue - the needle is always just over the 180 mark regardless of whether it's 30 degrees or 100 degrees F out. I do have the third radiator kit, though. The oil pressure jumps around all the time - it's very easy to get it to do that, I can even drive on the street and jerk the car at speed and it will drop momentarily. The engine doesn't even need to be at the "just over 180" mark to have the drop occur. As for specs: the car is stock other than an M030 suspension, Nitto NT01 tires, Cobalt Friction race pads, Ate200 fluid, 0w-40 at the halfway mark, and runs with muffler bypasses and weighs 3200 with me in the car.
So I have the X51 oil pan on the way, and I will be interested to see if it makes any difference. It's so easy to reproduce, I will be able to report whether just the x51 pan does anything - other reports have said it does not. We'll see!
01-10-2010, 12:53 PM
#52
RL Community Team
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Thread Starter
Partial update - with a new oil pressure sending unit installed (which is a 5 minute job - so simple on a 996, and only a $40 part) my oil pressure now reaches 5 bar which it never used to. The max oil pressure I ever registered at cold idle or acceleration was 4 with the old 94000 mile unit. I haven't had a chance to check the pressure dropping yet.
04-20-2010, 09:16 PM
#53
Three Wheelin'
Partial update - with a new oil pressure sending unit installed (which is a 5 minute job - so simple on a 996, and only a $40 part) my oil pressure now reaches 5 bar which it never used to. The max oil pressure I ever registered at cold idle or acceleration was 4 with the old 94000 mile unit. I haven't had a chance to check the pressure dropping yet.
08-22-2016, 12:39 PM
#59
Advanced
Sorry, since I'm considering replacing my Mantis 1.2 Litre deep sump oil pan with an x51 oil pan, I was hoping to see a video of someone on track with an x-51 oil pan.
Maybe I should create a new post then?
Maybe I should create a new post then?