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What's going on HERE???

 
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Old 02 Feb 2004, 11:04 pm
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Default What's going on HERE???

My engine now has 4300 miles on it and is running flawlessly. However, I just recently noticed some discoloration (area outlined in red) in the front "intake area" as you can see from the pictures below:


What's going on here? Is this normal? Should I just clean it off and forget about it? Is it possible that the gasket is defective and/or leaking? If so, should it be replaced or should I just leave it alone?

What do you think? Thanks.
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Old 02 Feb 2004, 11:24 pm
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the runners on my plenum are discolored, looks kind of like water stains or something. My engine runs fine so I don't worry about it....kind of bothers me at car shows but that's about it.
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Old 02 Feb 2004, 11:35 pm
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Same thing with mine...think we mentioned this before... [:I]
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Old 03 Feb 2004, 12:17 am
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I have this also.

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Old 03 Feb 2004, 12:37 am
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Same thing here... I think that it is just a water stain. Clean it and enjoy the boost!
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Old 03 Feb 2004, 12:48 am
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Mine is almost exactly like yours Gary! I have 18,000 miles on my 03! Idiots at the stealers told me it was my billet oil cap leaking vapors and I should take it off fast! I could not see how vapors would just settle on the manifold shelf!! Looks like most if not all turbos have this but I have no idea what it could be. I already had the manifold correctly torqued! No diff!
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Old 03 Feb 2004, 01:15 am
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Quote:
quote:Originally posted by GLH_TC 16V

Same thing here... I think that it is just a water stain. Clean it and enjoy the boost!
What product would you suggest I use to remove this discoloration ("stain") from the engine?
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Old 03 Feb 2004, 12:34 pm
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Quote:
quote:Originally posted by Gary04GT
What product would you suggest I use to remove this discoloration ("stain") from the engine?
[/quote]

sounds like a job for Gary (turbomangt)
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Old 03 Feb 2004, 03:09 pm
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I've found that an orange (citrus) based cleaner works well for cleaning stains on bare cast aluminum. I believe the acidity in the citrus is the effective ingredient. I just picked one of the several brands out at Lowes - I think it's called The Real Deal or something silly like that. I used it successfully to detail 12 year old Corvette manifold and alternator housings that had never been detailed before. I was also told that porous wheel cleaner works, but I've not looked for it.

I haven't noticed that same staining on my GT?
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Old 03 Feb 2004, 04:55 pm
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I just noticed it on my GT @ 12,000 miles. I might try re-torqueing the manifold bolts but I really don't think it is an issue.
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