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I'm looking for an unmodified, uncut XS650 swing arm frame for a resto/mod. I am happy to buy a frame with or without a title. The more original, the better. I've got a motor I plan on dropping in it with '79-'80 XS-SG crankcases so a contemporary frame/fit is preferred, but I do not believe...

Can anyone help me ID what this thing is? I'm starting to wire up my build, and I'm utilizing some of the new electrical components from the build the PO started; however, when I stripped the bike over a year ago, I tossed all the electrical bits in a box without figuring out what they all...

The black coils with yellow wires are EMGO mounted and ran to see the engine turnover, but never used on the road. This is a pair of single outlet 12 volt coils. The green coils are also EMGO and are brand new with packaging, never mounted, never ran because they came with the PMA kit I bought...

I guess my first questions is, can you run a single, meaning one individual unit, dual-output ignition coil with PAMCO ignition and a 277* rephase??? I bought a PAMCO kit from Mike's XS, and it came with two, single output/outlet ignition coils, one for each cylinder. Unfortunately, they're...

Personally, I don't feel like any of this belongs in the trash, but we all know just about how much value these parts have... Everything's free, let me know what you want, buyer pays shipping via PayPal "friends & family", or pick up for free in the Chicago suburbs. DM if you have any questions...

I've been meaning do deal with this awhile, and believe I've found a solution, but decided I'd review the forum to see what information I could find out there (if any) about a crack in this particular spot of the upper engine case: Obviously that top case is upside down, but...

How do you remove the locating pips (yes, that's what they're called... according to Haynes at least) on the upper crank case where the crankshaft sits? As you can see in the attached pictures, a couple of these locating "pips," pins, dowels, studs, whatever you want to call them, appear VERY...

I think I might've lost the "plug" (Haynes, pg. 35, part #17). Although the pictures in the manual suggest otherwise, can anyone tell me if this is how the "selector fork shaft" is supposed to sit or is it clearly missing the plug? Seems like it's in too far and needs the plug to sit properly...

Another greenhorn question, but when should one lap the valves? There's a lot of great information on this site about HOW to lap, but I have yet to see WHEN to lap the valves. I'm installing new Kibbelwhite valves, and I assume since they're new, the valves need to be lapped. Other than that...

FOR SALE: '78 or '79 Yamaha XS650 XS-F custom, hard tail frame. Has forward controls, kickstand, battery box, fender struts, wiring under seat and through frame. NO TITLE. MIG welded in jig, tracks straight, ran for years. Can be run as is or clean it up and show it some love! $500 shipped in...

I'm wondering if any of y'all know if anybody out there makes stainless steel or aluminum billet carburetor manifolds/boots that fit Mikuni BS38 carbs? I know Counter Balance Cycles makes stainless steel ones for Mikuni's VM34 and TC Bros has an aluminum set for them as well, but I can't find...

Certainly not a new topic, but I'm trying to appraise the condition of my pistons, piston rings, and cylinders. First, I want to replace my piston rings, but am unsure what size/dimensions I need. The local Yamaha dealer wasn't much help since their computer database archives nominal sizes...

Here it is, the age old question: Are the replacement valve seals sold on Mike's XS any good? Who's running them? Comments? Concerns? I'm having trouble finding a complete set of NOS valve seals online and am wondering what kind y'all are running?

Sooo... what's the trick? How do I remove the studs from the bottom of my crankcase? I know they are removable/replaceable since they are threaded, the Haynes manual indicates they are, and I've seen bottom cases without them in place. I tried removing them by screwing a M10 x 1.25 thread nut...

Why is the order in which you replace the friction plates in the clutch so important? After removing all the pressure and friction plates, I accidentally knocked them off the table before tagging and bagging them all so now I have no clue the exact order they were situated! How can I figure in...

I pulled off the engine head the other day, and after wiping it down with acetone, I noticed all the valve spring had spots of surface rust. I know it's best to always err on the side of caution, but do y'all think I need to replace my valve springs? I have yet to remove and full inspect each...

I'm currently in the early stages of completely rebuilding my XS650 so I've been doing a lot of research and planning. Lately I've been focusing on how to start and stop the bike as well as protect it from theft. My bike's a '75 XS650B, and I am interested in converting to kick-only with a Pamco...

PO removed the tach drive shaft and plugged it. I'd like to reinstall this function. Let me know if any of y'all are getting rid of one in usable condition that fits! Thanks!

I'm going through everything on my first build, and the alternator's stator coils look really grimy. Take a look at the attached pictures; should I clean these, or do they need to be replaced? I can't find replacements on MikesXS (either that or I don't know what I'm looking at), but I've...

A few months ago I purchased one these beloved Yammies under the impression it was a '77 XS-D (U.S.). The title matched the VIN stamped on the neck tube, and using the attached .pdf (readily found in several threads), I confirmed this to be true. Although the bike was fairly stock, the previous...