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COPIED FROM OHIOFLHTCUI...................
The bolt tightening sequence #1 and #2 on the cam plate go through alignment dowels. Only the tip of the bolt bites into threads. The other four bolts are fine in that they have a full stock of threads to grab on to. For #1 and #2 bolts I don’t use the bolts. I sink studs into the casing and fix them permanent with high strength loctite. So many guys have stripped out bolts #1 and #2 on the cam plate. Even S&S says they strip out those bolts in their gear drive cam instructions. So, I sink in double threaded studs (1/4x20; 1/4x28; 1 ½ inches long). The course threads into the casing and the fine thread side for the fancy 12-point nuts.
The studs I buy come from MSC Industrial Supply Company. I ordered off the web. The MSC part number is 65229783. The studs need to be the 1 ½” length to stick out far enough to get a nut on them. The 12-point fine thread nuts I get from Summit Racing. The Summit Racing part number is ARP-300-8330. I use them without washers but some use properly sized flat washers. I’d use some very good flat washers if it’s a stock cam support plate and would not use any if you’re going with a Fueling cam support plate.
Ordering one “unit” of the studs (65229783) gives you a box of ten studs.
I used the 271 high strength loctite to fix the course end of the studs into the cam chest casing and regular old blue (medium) on the 12-poing nuts. I can tell you that after fixing this “design flaw” of H-D I will never again take a cam plate off without switching to studs in the cam plate bolts tightening sequence #1 and #2. It’s too much trouble having to helicoil.
I really clean out the bolt holes with electrical cleaner and blow out with an air compressor. I also get the studs really clean. When red loctite’ing into the casing I use a couple of the nuts scissored together and just snug the stud into the casing and then scissor off the nuts so as not to budge the snugged down stud. Don’t crank down the stud into the casing, it’s held by the red loctite…just sung. You can immediately assembly the cam support plate on the studs and let the whole thing (studs, bolts, nuts) cure over night.
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Hillside Cycle custom head work
S/E 4.375 forged crank Darkhorsed
Axtell 117 cyls and pistons
Mikuni HSR48
S+S Super D manifold
Black Boarzilla
Wood's TW9BG cams and KF325 filter
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