does oil pressure have anything to do with weight transfer?
does oil pressure have anything to do with weight transfer? i've never really paid much attention to my oil pressure at WOT until i'm usually at about 80+ or so and its usually at about 60 psi, but i've been noticing on my take off whenever i floor it, the pressure drops to about 20 psi and then slowly starts building up...not sure if it drops because of weight transfer since the oil pump is more towards the front or if its because my pump is going bad(hopefully not though)? any input is appreciated.
joe
joe
usually i always use 6 qts castrol 20w-50 high the high mileage one since my car has 123k miles and the previous owner never used synthetic just regular 10w30...so then you guys think it could be the pump? thanks for the replies
joe
joe
Originally Posted by goober35
NO it has nothing to do with weight tranfer. Sence the oil pick up tube in in the rear of the motor.
Incorrect. I have data logs of the White TT car we ran last year with an extra oil pressure sensor. I can time the start of the run/T-brake launch by the nearly instant drop in oil pressure as the oil climbs the back of the block and uncovers the pickup tube.
We had to run it 2 quarts over just to keep some oil pressure.
Partly why I run a drysump. And also why that car is getting an external wetsump with more baffles and a very reward pickup.
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thanks for the input guys, my guess it would be weight transfer since it it goes down as soon as you floor it (mostly from a stop or a low mph) and rises back up to where it should, i really cant say much about the pressure going down from about a 50mph roll because i've never seen it drop when going that speed...i could be wrong about it though
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Joined: Mar 2004
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From: Laguna Niguel, CA
My old 94 LT1 used to do that! I thought it was the same thing too, weight transfer. A few months after I noticed the oil pressure drop and rise, I overheated the car and had to change the head gaskets. After I replaced just the head gaskets, I had better oil pressure and the oil pressure would not on acceleration anymore. :dunno:
Originally Posted by SUX2BU
Mine does this when i'm REALLY low on oil.