Issue link: https://read.dmtmag.com/i/787665
77 www.thunderpress.net THUNDER PRESS nMarch 2017n 17. OK… lower box in place… all three upgrades (big breathers, Rocker Lockers and metal rocker base gaskets) on board. (By the way—the hexagon doohickey you see is a tappet block alignment tool, handy for centering rocker boxes too.) Once centered, however cen- tered, it remains to bolt it down… by the book (or video). 18. Fit the modded D-ring with the new-style rubbers and make damn sure the new-style breather doesn't interfere with bolting it back on the lower box… square and centered! Once this is accomplished all that remains is to bolt the lid back on, put the rest of the bike back together and take a test ride. Quiet valve gear, no leaks and a hell of a lot less likeli- hood of oil carryover into the air cleaner—not a bad return on your investment. 19. P.S. Finally, let the record show, the factory has engineered the M-8 Big Twins to eliminate all three of the legacy rocker box issues. The sandwich lower gaskets will seal, the breathing now vents to the voluminous tranny case (with no path to an air cleaner at all)… and… take a look! Yeah, the M-8 rocker shafts are bolted down solid! Yay! Motorhead Continued from page 74