turboed ss Posted October 30, 2009 Report Share Posted October 30, 2009 So I have a 05 ss awd w/ a 408 and a 76mm sts turbo kit... I currently am under the impression that I have spun a bearing but Im not positive yet so please help... Here's what happened: I leave work fire up the truck at idle i have 40psi oil pressure so i let the truck warm up as normal. I drive home about 20miles, 30mins with normal oil pressure. I get home and shut it down everything is ok... The Next Day: A cold front moved in and it was in the 40s when i started the truck. I noticed that the truck was idling at about 18psi rather than the normal 40psi but I just figured it was the fact that it was cold and i'm running 15/50 full synthetic and a qt of the Lucas oil stabilizer. I was running late so it only warm up for a few minutes. I start down my 1/8 driveway and i notice the oil pressure moved a little but not like it should have. I pull out babying the truck until i notice it had warmed up 200+ but the oil pressure still refused to go above about 21psi even under small acceleration so i get maybe 1/2 mile from the house and i decide its a problem that's not going to just go away. I get home putting maybe 1 mile on the truck with the low oil pressure. Conclusion: My next day off I decide to remove the oil filter and cut it open to find it full of metal. No large piecing like something had broken but rather ALOT of small tiny pieces causing the inside of the filter to appear as if was metallic like a paint job. I know the motors coming out and being takin apart but i was just wondering if this was a problem that someone has had and if this sounds like it may have been just a bearing. Please any opinion, advice, help anything would be great. THANKS in advance!!! Quote Link to comment Share on other sites More sharing options...
SSplaytoy Posted October 30, 2009 Report Share Posted October 30, 2009 So I have a 05 ss awd w/ a 408 and a 76mm sts turbo kit... I currently am under the impression that I have spun a bearing but Im not positive yet so please help... Here's what happened: I leave work fire up the truck at idle i have 40psi oil pressure so i let the truck warm up as normal. I drive home about 20miles, 30mins with normal oil pressure. I get home and shut it down everything is ok... The Next Day: A cold front moved in and it was in the 40s when i started the truck. I noticed that the truck was idling at about 18psi rather than the normal 40psi but I just figured it was the fact that it was cold and i'm running 15/50 full synthetic and a qt of the Lucas oil stabilizer. I was running late so it only warm up for a few minutes. I start down my 1/8 driveway and i notice the oil pressure moved a little but not like it should have. I pull out babying the truck until i notice it had warmed up 200+ but the oil pressure still refused to go above about 21psi even under small acceleration so i get maybe 1/2 mile from the house and i decide its a problem that's not going to just go away. I get home putting maybe 1 mile on the truck with the low oil pressure. Conclusion: My next day off I decide to remove the oil filter and cut it open to find it full of metal. No large piecing like something had broken but rather ALOT of small tiny pieces causing the inside of the filter to appear as if was metallic like a paint job. I know the motors coming out and being takin apart but i was just wondering if this was a problem that someone has had and if this sounds like it may have been just a bearing. Please any opinion, advice, help anything would be great. THANKS in advance!!! If you are sure the metal in the filter isn't from the filter itself then maybe. What color are the shavings? If the shavings are from the filter then you could be losing pressure because of the pump or pick up. Drop the pan and check if you spun a bearing. You can do that in the truck without pulling the motor. If you did spin one, pull the motor and you are gonna need a new rotating assembly depending on how bad the damage is. Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted October 30, 2009 Report Share Posted October 30, 2009 IMO you were using too think of oil... and if the oil is colder, the pressure will go up b/c the oil is thicker. and from that story i cant really get a good idea what it is. did you just drive the truck home casually the day before you noticed this or were you on it alot? Quote Link to comment Share on other sites More sharing options...
turboed ss Posted October 30, 2009 Author Report Share Posted October 30, 2009 If you are sure the metal in the filter isn't from the filter itself then maybe. What color are the shavings? If the shavings are from the filter then you could be losing pressure because of the pump or pick up. Drop the pan and check if you spun a bearing. You can do that in the truck without pulling the motor. If you did spin one, pull the motor and you are gonna need a new rotating assembly depending on how bad the damage is. Yea I'm sure the metal wasn't from the filter, they were so small that making out a color it almost impossible with out a lens. As far as i can tell the metal has a silver, or aluminum color to it. Im just hoping i got home and shut it down before i did any real damage the rotating assembly. Quote Link to comment Share on other sites More sharing options...
turboed ss Posted October 30, 2009 Author Report Share Posted October 30, 2009 IMO you were using too think of oil... and if the oil is colder, the pressure will go up b/c the oil is thicker. and from that story i cant really get a good idea what it is. did you just drive the truck home casually the day before you noticed this or were you on it alot? I was just driving casually.. As a matter a fact I never even made boost.. It was a long day and i didn't feel like doing anything but getting home... Ur right the oil pressure would be high not low idk what i was thinking... The reason for the thick oil was me living a Jax, Fl. with the hot weather the oil was just thinning out so much that i was having really really bad sawing machine noise coming from the heads.. After i went to the thick oil it helped a lot.. I was thinking that with the thick oil it may have caused the oil pump to break or just wear out prematurely maybe causing all this... Quote Link to comment Share on other sites More sharing options...
black00chev Posted October 30, 2009 Report Share Posted October 30, 2009 Maybe your oil pump is crapping out... I think I remember somewhere that stated to NEVER run over a 30 weight oil due to the pumps not being able to handle thicker stuff. anyone feel free to correct this if wrong. Quote Link to comment Share on other sites More sharing options...
turboed ss Posted October 30, 2009 Author Report Share Posted October 30, 2009 Maybe your oil pump is crapping out... I think I remember somewhere that stated to NEVER run over a 30 weight oil due to the pumps not being able to handle thicker stuff. anyone feel free to correct this if wrong. I was thinking the same thing about the pump but way would i have the metal in the filter with out any knocking noise or any broken parts unless i caught it in time... A bad oil pump would also explain the really noisey sawing machine valve train... But that brings up a new question. Y would an oil pump with worst case 20,000 miles go bad... Quote Link to comment Share on other sites More sharing options...
kelleyperformance Posted October 30, 2009 Report Share Posted October 30, 2009 I was just driving casually.. As a matter a fact I never even made boost.. It was a long day and i didn't feel like doing anything but getting home... Ur right the oil pressure would be high not low idk what i was thinking... The reason for the thick oil was me living a Jax, Fl. with the hot weather the oil was just thinning out so much that i was having really really bad sawing machine noise coming from the heads.. After i went to the thick oil it helped a lot.. I was thinking that with the thick oil it may have caused the oil pump to break or just wear out prematurely maybe causing all this... i live in miami and if i ran that oil, a few 1/4 passes and id have a knock. its never a good idea to run oil that thick, even if it seemingly decreases noise. with a 408, especially with the specs a turbo'd cam for a 408 would have, your always going to have some "sewing machine" noise- they all do. id bet that the lack of lubrication caused this failure. the ONLY real use for that thick oil is a heavily worn engine. the only time heat would call for a higher viscosity is for racing, due to higher operating temps. b/c whether its 40 degrees outside or 90, if the truck is in proper working order its gunna have the same relative operating temperatures. Quote Link to comment Share on other sites More sharing options...
turboed ss Posted October 30, 2009 Author Report Share Posted October 30, 2009 well ill be pulling it out probably in the next few weeks and ill find out what was damaged is... I hope that its nothing to serious but well see... so what weight oil would be ok??? I'm just worried that between the turbo and the motor both making so much heat that it will thin the oil out to much... Quote Link to comment Share on other sites More sharing options...
black00chev Posted October 30, 2009 Report Share Posted October 30, 2009 Id probably just run a GOOD HIGH QUALITY 10w-30 if in the summer and 5w-30 in the winter. Quote Link to comment Share on other sites More sharing options...
turboed ss Posted October 30, 2009 Author Report Share Posted October 30, 2009 Id probably just run a GOOD HIGH QUALITY 10w-30 if in the summer and 5w-30 in the winter. Yea that's all i use is castrol 10w30 or napa (Valvoline) 10w30 synthetic in all my other cars but my valve train is so noisy... Its ALOT noisier than stock and after talking to and letting couple local performance shop hear it they agreed that somethings not right about how noisy it is... I just figured it was the oil and not the pump... But if it was the pump getting weaker that would explain the noise caused by a lack of oil then when i put in the 15w50 it made the noise alittle better b/c there oil would stay in the valve train longer but it also made the already weak pump work harder, causing it to finally get to the point that it cant maintain good pressure. Quote Link to comment Share on other sites More sharing options...
SSplaytoy Posted October 30, 2009 Report Share Posted October 30, 2009 I run 10w-30 year round and live in Miami. What did you use to cut open the filter? Quote Link to comment Share on other sites More sharing options...
desrtrat Posted October 30, 2009 Report Share Posted October 30, 2009 another thing to look into, is a possible spun cam Bering. happened to a couple people here over the years. i would think if a rod or main Bering was bad it would be knocking. good luck Quote Link to comment Share on other sites More sharing options...
JSTAL Posted October 30, 2009 Report Share Posted October 30, 2009 (edited) 15/50 its not a duramax . Use 5/30 all year round Edited October 30, 2009 by MIDNIGHTRIDR (see edit history) Quote Link to comment Share on other sites More sharing options...
SSplaytoy Posted October 31, 2009 Report Share Posted October 31, 2009 15/50 its not a duramax . Use 5/30 all year round But Rotella is the sh!t Quote Link to comment Share on other sites More sharing options...
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