2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

too much s/c oil?

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Old 10-21-2008, 05:10 PM
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too much s/c oil?

ok, so i put between 5-6 ounces of oil in my s/c and not i max out to like 16 psi in third and 17 psi in 4th and at about 5500 rpms it starts to drop going down all the way to 8psi at redline (7250). mods are in sig
Old 10-21-2008, 05:11 PM
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and you replaced lifetime oil...why?
Old 10-21-2008, 05:13 PM
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bc im running a 2.6 pulley, i get on it a lot, and other ppl complained their supercharger oil was black, im at 30,000 miles. just answer the question please. no need for bashing.
Old 10-21-2008, 11:17 PM
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Originally Posted by restonSS
ok, so i put between 5-6 ounces of oil in my s/c and not i max out to like 16 psi in third and 17 psi in 4th and at about 5500 rpms it starts to drop going down all the way to 8psi at redline (7250). mods are in sig
I wouldn't think it would make a difference. Just siphon some (20%?) out and see if it fixes the problem.

Originally Posted by mkulrey13
and you replaced lifetime oil...why?
It's actually 100k miles.

Last edited by theneelster; 10-21-2008 at 11:17 PM. Reason: Automerged Doublepost
Old 10-21-2008, 11:18 PM
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Sounds like a boost leak. Check your gaskets/lines.
Old 10-21-2008, 11:27 PM
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Originally Posted by ItalianJoe1
Sounds like a boost leak. Check your gaskets/lines.
Doesn't seem like it would be the manifold line as it would reduce boost across the board. Is 17psi right on for the 2.6 with the vibrant head?
Old 10-21-2008, 11:28 PM
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Originally Posted by theneelster
Doesn't seem like it would be the manifold line as it would reduce boost across the board. Is 17psi right on for the 2.6 with the vibrant head?
no, couple pounds low
Old 10-22-2008, 11:49 AM
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hmmmm, yeah i think i will get a new s/c gasket as well. thanks guys.
Old 10-22-2008, 12:55 PM
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I heard you're supposed to change supercharger oil every 30,000 miles, but I think that's only for people who really like to romp on the car. I'm at 14,500 miles and probably won't be changing mine until 40,000-50,000.
Old 10-22-2008, 01:26 PM
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now that its getting cold out, i'm even seeing 17psi on my 2.8", i would go with saying that you may have belt slippage or boost leakage. Your car will drop boost for certain reasons, what IAT2 temps have you been seeing? Are you experiencing knock? Also, how old are your spark plugs? If you're getting blowout it may be close to having a rev limiter
Old 10-22-2008, 02:13 PM
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if your running a smaller pulley, id consider changing the oil after 60 k miles......not before!
Old 10-22-2008, 05:03 PM
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Originally Posted by LopsidedJester
now that its getting cold out, i'm even seeing 17psi on my 2.8", i would go with saying that you may have belt slippage or boost leakage. Your car will drop boost for certain reasons, what IAT2 temps have you been seeing? Are you experiencing knock? Also, how old are your spark plugs? If you're getting blowout it may be close to having a rev limiter
I'm gonna go with this guy. I usually get about 16 with my 2.9 - he should be up around 18-19.
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