Another oil pressure question

[tunapie]

The second version of my oil cooler is installed with a Fluidyne now crammed in the RR wheel well. Ended up with spray can foam to glue it in place due to the lack of places to attach mounts. Pulled off the side scoop inlet trim ot get more air thru the cooler and a fan on the back with a oil temp sw. I will get some pictures later today. ANYWAY, my question is my oil pressure zips up to 80 psi at about 5,300 rpm then Stops for the rest of the rpm range. Mmmm, my bypass spring or is this normal. Even with VTEC I do not think it should just stop. If you have a mechanical gage, throw me a bone here. My new matra, "it's all crap till proven on the track". Dan

 

[ScienceofSpeed]

Dan --

Here are the results from the testing of our new plug-and-play oil cooler log data from the Defi Control Unit 2:

ScienceofSpeed
ScienceofSpeed Oil Cooler Tests

16-Aug air temp: 104 F
no external cooler
RPM temp pressure throttle
test 1 6000 225 F 97 psi WOT
test 2 6000 226 F 97 psi WOT
test 3 6000 225 F 98 psi WOT

test 4 8100 226 F 98 psi WOT
test 5 8100 226 F 97 psi WOT
test 6 8100 225 F 98 psi WOT

test 7 1050 199 F 31 psi idle (15 mins)
test 8 1050 197 F 30 psi idle (20 mins)
test 9 1050 198 F 30 psi idle (30 mins)

17-Aug air temp: 106 F
ScienceofSpeed Oil Cooler installed
RPM temp pressure throttle
test 1 6000 212 F 98 psi WOT
test 2 6000 215 F 98 psi WOT
test 3 6000 213 F 98 psi WOT

test 4 8100 217 F 99 psi WOT
test 5 8100 214 F 98 psi WOT
test 6 8100 218 F 99 psi WOT

test 7 1050 199 F 32 psi idle (15 mins)
test 8 1050 197 F 32 psi idle (20 mins)
test 9 1050 197 F 31 psi idle (30 mins)

 

[tunapie]

Thanks Chris, I assume that is the norm for oil pressure. Do you have a pix of your cooler. Dan

 

[ScienceofSpeed]

Hi Dan -- No, picts coming soon. The baseline oil pressure is consistent with what I've seen before. As you can see, the oil cooler had little to no effect on oil pressure. What size lines are you using?

-- Chris

 

[tunapie]

-10 Chris.

 

[nsxbuilder]

Guys,

Questions:
1) Are you using a take-off plate with the factory filter or a filter relocation system?

2) What size lines are going to/from the cooler?

3) Is the pressure sender on the oil outlet to the cooler or the return side from the cooler.

-Ed
www.nsxbuilder.com

 

[tunapie]

I have a take off plate that was machined thinner so you can still use a OE oil filter. Stock sensor that takes pressure before it goes into the engine. Dan