block and header discoloration

quietman

.020 Over
Joined
Apr 21, 2006
Messages
48
Location
las vegas, nv
hello folks. my 2005 with only 250 miles on it already has dark brown
heat discoloration on the siver/grey portion of the block where the header
pipes are bolted on. the #1 cylinder is darkest, and the #3 cylinder is lightest in color. is this burning/discoloration normal so soon ? and, given the different color tones (#1 cylinder must be running the hottest) is this a sign of over heating or a lean condition ?
 
It is pretty much normal.... I think Miami Dave had a discussion on this in one of these threads.... You will have to search...
 
Yeah, it is normal. I recall the color change very soon after I had the bike. Nothing to worry about. Lots of us cover it up with the Rivco exhaust flange covers.
 
I don't recall commenting on it-but I'll check later. I don't remeber it being on the block though...
 


like this - is normal get the covers solves the problem...
 
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