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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
I'm currently in the middle of swapping motors in my 07 fxdb. I removed the rockers so I could powdercoat the rocker covers and realized last night that the breather assemblies are different between the 2 motors. In my old motor are the thicker cast breathers, and in the newer motor (I believe a 2012 electra glide) are these thinner stamped ones. I assume that the stamped style are an upgrade and I should continue to use them in the new motor, however, I have a couple questions.
1. I'm aware the bolts are shorter for these so I will be sure to use the existing shorter bolts for it.
2. It looks like the gaskets I have don't match with the newer style breather, and on Ronnies there isn't even a part number for the gaskets for it. Do I just need to buy whole new breather assemblies?
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Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
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Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Breather Assembly - new vs old style
