Has anyone logged oil pressure for their tracked car? If so, what tires were you using?
I am trying to determine whether I need to bite the bullet for an accusump or not. I didn't see the oil pressure light this weekend while on the track, but I think that is some pretty false security.

 

Here you go. Looks like VTEC will eat up 10-15 psi from time to time but I never drop below 60psi. The graph shows that it is pretty consistent with engine RPM and VTEC engagement. I'm running BFG R1s and included the lateral g. Not my best stuff the only data I have with oil psi.

BTW the oil light on the dash is just an idiot light. It just grounds out the circuit if it drops below 10psi (or might even be 5psi). I removed the sensor and installed my oil pressure gauge using the block port. You can do this if you want a gauge....just pull the bulb on the dash.



-Rob

 

Wow. I thought I was reading the graph incorrectly, but that is super solid pressure. I was expecting to see drops to around 20psi or less (which is not uncommon in other cars).

That was super helpful, thanks. I paid money to have a baffle welded to my oil pan, so I might as well use it but it looks like it isn't needed. Were you using your baffled pan at the time?

 

Yeah since the graph only shows the max / min during the run you don't it makes the scale of the graph / line look off. Once you see the pis at at lower engine speeds it kinda comes into focus a bit. Either way, it's totally constant with load, RPM and VTEC Engagement.


I am using a baffled pan. There is a lot of speculation as to whether they are useful or not but I figure if it's designed well.... it's cheap insurance. We do have so long, high G turns that could cause the oil to stand up on the sides of the pan and starve the motor.

-Rob

 

Are you using a 30 weight oil?
Are you using an extra oil cooler?
No higher than 90 psi looks low but no lower than 60 psi looks pretty good.
IIRC, highest seen oil pressure using 10W-30 was around 125 psi.
It peaked at 5000 rpm.
Meaning above 5k rpm the pump is in bypass.
Meaning in your situation you get a LOT more oil flow as the pump is not in bypass but pushing oil into the engine.

 

SpitfireS, remember where he installs the sensor matters too. So it is all relative. The OEM port for the oil pressure switch (idiot light) is where Honda specs that the pressure be tested. So if he picks of the value from a different location, and the location is a wider hose the pressure will read lower.

 

If you look at this pic of rob.ok's engine. It looks like he is pulling the oil pressure from the OEM pressure switch location. But I could be wrong. But that is exactly how I installed mine. I just don't have any data yet.

 

Yeah you guys are correct. I do see pressures as high as 125psi but they are only spikes. I've done some flittering of the sample rates to smooth out the reading to better the averages. It's down right hard to read what your psi is when the numbers are jumping so fast on track. I just input the same data into the program so they are the same.


You have to remember too that this is just one lap of a session and the oil is hot. I'm using 10w-30 cheap dino oil. My VTEC is lowered as well and in that graph there is only a few times that I'm out of VTEC. This oil pump has only 3500 miles on it too. It's practically brand new.


Honda's specs call for some thing like 30psi at idle and 85 pis at 3000rpms (I think) at that port. I feel really confident in the numbers.

No oil cooler and I was not able to log oil temps this weekend due to a broken sensor. However my water temps did not even break into the 200s I think the highest reading I got was a 198 degrees during the session.

-Rob

 

I have a simple baffled pan and don't have oil pressure problems until I end up in a long sweeper over 1.5g's and even then I haven't had any damage from it.

 

What kind of problems do you have - what pressure do you dip to?

Rob - I would be interested in oil temps too. I bought a used NASCAR oil cooler and I would love to not have to install it.

Are the F blocks like the B blocks in that they have BSPT threads for the oil pressure switch port?