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brownish color inside of turbo manifold??

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Old 12-26-04, 07:50 PM
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brownish color inside of turbo manifold??

is it normal to have a brownish color in the exhaust manifold?? i just did the lower intake manifold and noticed this brownish color inside if the turbo manifold.
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Old 12-26-04, 08:22 PM
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cast iron is usually brown. I think its the white stuff your talking about. I have it in my manifold too, plus all down the exhaust right to the tip. I think its caused by a slightly lean mixture, but then again i could be talking out of my ***.
Old 12-26-04, 09:27 PM
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what could cause it to run lean?? i bought the car from a older man (4? yrs) and it is all stock and he is the only owner. any ideas??
Old 12-27-04, 12:27 AM
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Looks good (OK) to me.
Old 12-27-04, 12:44 AM
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cool, if its looks good then i can put everything back together. thanks for your guys help
Old 12-27-04, 08:06 AM
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Yeah I had the same thing.

I run Mobil 1 and mostly Sunoco Ultra 94, what do you use?

Dave
Old 12-27-04, 08:40 AM
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Mine looked the same way when I took it apart:


Old 12-27-04, 11:44 AM
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Originally Posted by broken93
Mine looked the same way when I took it apart:


thanks for the pics, it helps me know that it is normal. this is the first time i took off the turbo on a rotary
Old 12-27-04, 12:00 PM
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Great reference pics guys.
Old 12-27-04, 03:39 PM
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Yep, mine looked like that too. Trust me, I do *not* run lean (I guess it's normal).

Last edited by WaLieN; 12-27-04 at 03:42 PM.
Old 12-27-04, 11:33 PM
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I have those white ash on my DP too. No body really know what cause that?

BC
Old 12-28-04, 12:03 AM
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White on the exhaust is from running hot/lean exhaust... kinda normal for the rotary.. if its really really white.. i'd be worried.. a little white is pretty normal.. have yet to run across any that haven't.
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