Low oil pressure woes :(
Thread Starter
Pro
Joined: Oct 2009
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From: Panama City Beach Florida
Low oil pressure woes :(
So I finally have my hinson single turbo z06 running and driving. A rebuilt all forged 347 is in the car with a new ls6 stock oil pump.
At hot idle the car makes 9-11 psi of oil pressure. Oil temps at abt 235 F.
I cant get the needle to go past 42 psi max at higher revs. My valvetrain sounds like a sewing machine, but then again I do have dual springs, hardened pushrods, ls7 lifters. So I think it should probably sound a little like that. I am going to change the oil pressure sensor right now in my warehouse, and change the oil. The oil in it now is a 10w30 conventional mobile one (my engine break in oil). I have about 700 miles on this oil, and on my motor.
It was rebuilt by a reputable shop, and I am worried to death that I have to take the motor out again to send it back to them.
Could my 76mm turbo be this hungry for oil that I am seeing this low pressure?
At hot idle the car makes 9-11 psi of oil pressure. Oil temps at abt 235 F.
I cant get the needle to go past 42 psi max at higher revs. My valvetrain sounds like a sewing machine, but then again I do have dual springs, hardened pushrods, ls7 lifters. So I think it should probably sound a little like that. I am going to change the oil pressure sensor right now in my warehouse, and change the oil. The oil in it now is a 10w30 conventional mobile one (my engine break in oil). I have about 700 miles on this oil, and on my motor.
It was rebuilt by a reputable shop, and I am worried to death that I have to take the motor out again to send it back to them.
Could my 76mm turbo be this hungry for oil that I am seeing this low pressure?
Myth Buster
Joined: Apr 2011
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From: In the lead Tx
Thread Starter
Pro
Joined: Oct 2009
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From: Panama City Beach Florida
changed oil to rotella t6 15 40 and the engine is quieter and at hot idle I see 24 psi oil pressure. For some reason though my oil dipstick blew oil and sprayed oil everywhere
Tech Contributor
Joined: Jan 2007
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From: Dyer, IN
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Joined: Oct 2009
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From: Panama City Beach Florida
improper vented crankcase can cause low oil pressure? I have the revextreme catch can setup (dual) which I installed per the instructions...
this blowing out the oil dipstick thing happened only once just after I changed the oil. I went back out on another road test and it didnt happen again
Im betting someone did a ****** build on my motor.
this blowing out the oil dipstick thing happened only once just after I changed the oil. I went back out on another road test and it didnt happen again
Im betting someone did a ****** build on my motor.
Thread Starter
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Joined: Oct 2009
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From: Panama City Beach Florida
for some reason though my oil pressure is definitely better than it was, and the sewing machine sound from my valvetrain is nowhere near to what it was.
Also, I am thinking maybe my oil dipstick came out from being too full? I put 6.5-7 qts in the thing
Also, I am thinking maybe my oil dipstick came out from being too full? I put 6.5-7 qts in the thing
Myth Buster
Joined: Apr 2011
Posts: 211
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From: In the lead Tx
If you had it assembled with GM gskts ect. The Oil pickup oring isnt orange for any engines, I believe there is just black,red,green, and blue. The only thing orange is the seal on the cam/oil gallery plate in the front. Either way there shouldnt be any oring materiaL in your filter. Check your pushrod length as well, or have it done by your builder. If they dont know what to do go somewhere else that does. Chances are they are too short.
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From: Panama City Beach Florida
so the orange gasket material I am finding in the motor could just be excess rtv from the build?
My current pushrods ate hardened 7.4 inch... I am running ferrara valves, with ls7 lifters.. I am also using stock rockers but with upgraded bearings from COMP. I am using 317 heads...
My current pushrods ate hardened 7.4 inch... I am running ferrara valves, with ls7 lifters.. I am also using stock rockers but with upgraded bearings from COMP. I am using 317 heads...
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From: Panama City Beach Florida
I did see a pearl colored material in the oil filter when I used my finger to swirl it around also. But this is non magnetic bearing material and apparently normal during the break in process right?
Also, again after my oil change my pressure seems to be a good bit better. Still not sure why it was so low to begin with.
Also, again after my oil change my pressure seems to be a good bit better. Still not sure why it was so low to begin with.
Myth Buster
Joined: Apr 2011
Posts: 211
Likes: 2
From: In the lead Tx
I cant say where Orange RTV was used?? The seal behind the plate I was referring to is a formed rubber seal used to seal the Lifter galleries. No one should use silicone anywhere other than the correct sealant in 4 corners of the pan. The last nonmetalic shimer I saw in the oil and filter was due to debris going through the oil pump itself. The inner housing was scored up to the point where substantial oil pressure was lost
Tech Contributor
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From: Dyer, IN
7 quarts is not going to blow out your dipstick....
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From: Panama City Beach Florida
its not coolant. I am not losing coolant at all nor burning it nor smelling it, nor do I have the appearance of water in my oil. That would be a bit milky and since the two dont mix, it wouldnt look the way it does. I have read that some bearing material in the break in oil can be normal on a brand new rebuild.
I am however noticing my oil pressure is lower when i run the crap out of the car and the oil temps run as high as 260F. These cars have no oil cooler, and I think having one may very well help me. As I sit even with the high temps after the oil change I am getting 22-24 psi at hot idle now. So Idk what to do. Ill change the oil again soon and see how it looks now.
I am however noticing my oil pressure is lower when i run the crap out of the car and the oil temps run as high as 260F. These cars have no oil cooler, and I think having one may very well help me. As I sit even with the high temps after the oil change I am getting 22-24 psi at hot idle now. So Idk what to do. Ill change the oil again soon and see how it looks now.
