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Join Date: Jan 2004
Location: CT
Posts: 11,567
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What are these deposits in my exhaust ports?
I'm in the process of cleaning up my 2.4 CIS heads before I offer them for sale. I found this whitish deposit in one of the exhaust ports. I scraped most of it away and bead blasted the rest. It cleaned up nicely. Anyone have any ideas on what it was?
 
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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01-09-2006, 06:43 PM
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What condition were the pistons in? Any signs of detonation? They look like flecks of metal to me based on the pictures. If they are, then the question is what did they come off of? But then these are just some SWAGS on my part.
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John '69 911E "It's a poor craftsman who blames their tools" -- Unknown "Any suspension -- no matter how poorly designed -- can be made to work reasonably well if you just stop it from moving." -- Colin Chapman |
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01-10-2006, 05:43 AM
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Location: CT
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The piston tops were pristine. A quick look over the cylinders showed nothing unusual. The material did not appear to have metallic content and crumbled easily when I scraped it with a small screwdriver.
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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01-10-2006, 09:03 AM
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abit off center
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did you run any Chevron Tecron thru it? I was getting some of that same white flaking soon after running it thru mine
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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01-10-2006, 12:55 PM
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1969 Porsche 911E 2.0 E
1969 and 1986 Porsche Targa and Coupe 1720cc and 3
