5.3 oil pressure drop, weird problem. HELP
08-04-2012, 03:55 PM
#1
Staging Lane
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5.3 oil pressure drop, weird problem. HELP Hello all,
Took my car to the track for the first time after the build and Ive got a 5.3 with the GTO oil pan and pick up pan setup to fit in my chassis. Last night at the drag strip i pulled the logs off the motec and my oil pressure drops as i shift into second, but comes back in 3rd(th350).
I am stumped because i would assume a bad pump but it comes back.
Could it be oil loading up in the head, getting away from the sump? I added 1/4-1/2 qt to see if it helps but it did it twice so i quit.
Thanks!
Took my car to the track for the first time after the build and Ive got a 5.3 with the GTO oil pan and pick up pan setup to fit in my chassis. Last night at the drag strip i pulled the logs off the motec and my oil pressure drops as i shift into second, but comes back in 3rd(th350).
I am stumped because i would assume a bad pump but it comes back.
Could it be oil loading up in the head, getting away from the sump? I added 1/4-1/2 qt to see if it helps but it did it twice so i quit.
Thanks!
08-04-2012, 07:28 PM
#2
Leaky o'ring??
As g force rises, [lo gear accel], and the oil is pushed to the back of the pan, the ring leaks, allowing air into the pump = psi loss.
gear shift, g force drops, and the oil covers the o ring.
Adding the extra oil only shortens the time B4 recovery???
Same issue when the car is on the rollers??
Outside the box idea.........
As g force rises, [lo gear accel], and the oil is pushed to the back of the pan, the ring leaks, allowing air into the pump = psi loss.
gear shift, g force drops, and the oil covers the o ring.
Adding the extra oil only shortens the time B4 recovery???
Same issue when the car is on the rollers??
Outside the box idea.........
08-05-2012, 09:47 AM
#4
Launching!
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off subject but,
i downloaded motec last night,
how are you hooking your computer to your car?
do you have to have a specific cable for our cars?
or any obd2-usb cable?
i found this one but not sure if itll work
i downloaded motec last night,
how are you hooking your computer to your car?
do you have to have a specific cable for our cars?
or any obd2-usb cable?
i found this one but not sure if itll work
08-07-2012, 07:58 PM
#5
Staging Lane
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the m800 isnt a plug and play setup, you will ned to create your own CAN bus system to communicate with the ecu.
you need the motec UTC can adapter.
http://www.performancecatalog.com/Mo...CU-p/m-utc.htm
and motec part number 61037. and wire it in.
you need the motec UTC can adapter.
http://www.performancecatalog.com/Mo...CU-p/m-utc.htm
and motec part number 61037. and wire it in.
Last edited by turbociv910; 08-07-2012 at 08:05 PM.
