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Can i use this intermediate in my rebuild?

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Old 03-28-06, 12:06 PM
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Can i use this intermediate in my rebuild?
Hey guys,

Why is there the discoloration in the lower part of the iron? Is this just a byproduct of the combustion cycle, or what? This plate is completely within spec, but the discoloration bothers me, my other intermediate plates dont have such a huge color difference, but more wear. Is this plate ok to reuse in my rebuild?

Thanks in advance, Matt



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Old 03-28-06, 02:03 PM
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Discoloration is from overheating. If there is no step wear or warpage, use it.
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Old 03-28-06, 03:41 PM
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thats actually really interesting to see where the combustion occurs represented by a shape like that.
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Old 03-28-06, 05:29 PM
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Technically that is not all combustion, most of it is the exhaust stroke.
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Old 03-28-06, 05:59 PM
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its fine, they do that. if you take a bit of sandpapre or lap it it will loose that color
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Old 03-28-06, 10:52 PM
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what grit sandpaper would be best? 600 1000, 2000?
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Old 03-29-06, 12:37 AM
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400 wet/dry paper. Use oil instead of water and a firm sanding block, no fingers.
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