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Old 09-07-2008, 01:27 PM   #1 (permalink)
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Join Date: Sep 2008
Bike: 1986 honda nighthawk cb450
Posts: 5
Default can you id this part? 86 nighthawk 450

so, servicing my nighthawk, i've become unable to identify this part or its function... i don't have a picture of mine specifically, but i do have a picture of a bike -

http://www.theautolog.com/uploads/ca...thawk)-562.jpg

look behind the engine, right under the carbs, for that fist-sized cylinder with vertical oval-shaped grooves in it. what the hell is this? its bolted to the frame in two places, has a drain output, tank vent (drain?) tube, a connection to the carburetor, and some other tube that snaked under my seat and isn't connected to anything. can anyone please tell me what this is?

equally perplexing about it is that its barely on any other nighthawk 450s - when i google image search, there's maybe only two with this out of a plethora without it. i can't find any info online, any help appreciated...

noah