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Old 10-21-2013, 05:47 AM   #71
C5NatieC5Natie is offline
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LS1Z28 mentioned running Sea Foam too, then changing the oil. How much did you put in?
It was whatever the directions called for. Cant remember if its a whole or half a can. Ive also used iirc Gumout's Motor Flush. It wasnt on the vette but in a Mitsu Endeavor. That one you just idle it for a few minutes and it seems to clean things up pretty good. I dont use these products much but it was a higher mileage car and it did get quieter after. Sometimes you get lucky.
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Old 10-21-2013, 02:55 PM   #72
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Ya Im with guy, worst case you destroy for cam bearings and cam, which are fucked anyways. Just enjoy it till it gets bad, then new bearings and a new cam.
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Old 02-15-2014, 02:55 AM   #73
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Changed the oil to Rotell 15/40 and and put in some sea foam, but only have 20 miles or so on it. Sound is still there. Interestingly it's really only at partial loading, not all the time. Pretty quiet when idling, and doesn't seem to do it when romping (that i can hear). It's worst on a curve under light/partial load, like turning a corner.
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Old 02-16-2014, 01:31 AM   #74
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Changed the oil to Rotell 15/40 and and put in some sea foam, but only have 20 miles or so on it. Sound is still there. Interestingly it's really only at partial loading, not all the time. Pretty quiet when idling, and doesn't seem to do it when romping (that i can hear). It's worst on a curve under light/partial load, like turning a corner.
Even the worse cam knock i've heard was still only under part throttle, i'm sure its happened, but I've never heard of catastrophic engine failure starting with cam knock
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Old 02-16-2014, 01:50 AM   #75
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Even the worse cam knock i've heard was still only under part throttle, i'm sure its happened, but I've never heard of catastrophic engine failure starting with cam knock
But would it apparently go away under WOT? My expectation would be for it to get progressively worse, but I guess it could be a more complex "resonance" type question.
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Old 02-16-2014, 02:38 AM   #76
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But would it apparently go away under WOT? My expectation would be for it to get progressively worse, but I guess it could be a more complex "resonance" type question.
Yup, light part throttle at idle, part throttle at cruise, no noise at idle or under WOT.
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