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  1. 5twins

    Suzuki Carb Parts for Our 650 Carbs

    A couple of these have been mentioned before, the butterfly shaft seals and the brass floats for the 1980 BS34s ..... ..... but I've discovered some...
  2. 5twins

    Locks and Keys

    This is going to be a rather long thread in which I'll share all the knowledge I've gathered on the locks and keys these bikes use. These are sadly neglected parts and most haven't been touched or serviced since they left the factory so are (way) past due. Renovating (cleaning, lubing) your lock...
  3. 5twins

    Voltmeter Power Connection on Special Model

    On the multi-fuse Special models, there really is no good readily available connection point inside the headlight for the power lead of a voltmeter. Any spot you choose has already gone through multiple splits or connections and at least two fuses. This usually results in a meter reading several...
  4. 5twins

    Jet Bits

    I've mentioned in the past that I custom grind 1/4" insert bits so they perfectly fit the jets. It's difficult, if not impossible, to find an off-the-shelf American screwdriver that fits well. This is probably due in part to the jets being metric and having metric sized screwdriver slots. In the...
  5. 5twins

    Drilled Disc Hole Sizes

    I made mention of this in some other threads and now here's the full explanation. I had seen or read somewhere on the web several years ago that so as not to lose surface area, it was best you kept the hole size no bigger than the disc is thick. To prove that to myself, I needed to do a bunch of...
  6. 5twins

    '81-'83 Kicker Upgrade

    In '81, Yamaha cheapened up the kicker assembly, made the whole thing lighter and more spindly. The worst aspect of this was a smaller "foot". Obviously, this is what came on my '83 and I found it not as easy to use as the larger, older style on my '78. So, I decided to "upgrade" it. The earlier...
  7. 5twins

    Latest "Freebie"

    Yep, this still happens occasionally. In this case, a friend of a buddy picked this one up a few weeks ago. It's a 1980 Special II, pretty much complete and with a title. It belonged to a friend's father and has been parked for many, many years (last inspection sticker says 1995). It was a...
  8. 5twins

    Retrofitting Headlight On-Off switch to '81-'83 Model

    This is something I've been planning since I got my '83. It took some studying of the various wiring diagrams but I figured it out. I wanted to try to do this without having to run a bunch of extra wires, utilizing as much of the existing wiring as possible. All I ended up having to add was 3...
  9. 5twins

    Honda MP08 Coil

    I've been wanting to try one of these for some time now after reading about them here on the forum. They are a nice, low cost, and very dependable substitute for the stock TCI coil. They can also be used with a Pamco or other electronic ignition that calls for a low ohm primary coil. These coils...
  10. 5twins

    TCI Timing Tweak

    I like to retard the timing on these bikes a little bit, just a couple of degrees. On the points equipped models, it's no problem, you simply adjust the timing plate. On the TCI models, there is no adjustment provided, but that doesn't mean it can't be done. And it turns out, it's pretty simple...
  11. 5twins

    Sump Filter Guard

    We're all aware of the sump filter issues, specifically the torn screening at the end where the oil intake port is. Apparently the suction right at that port is too much for the screening around it to handle. Many of us simply patch the tear in the screen with JB Weld. That's been working well...
  12. 5twins

    Engine Oil Seals

    There's been some oil seal talk recently, particularly about the cam shaft seals, and I realized I really didn't know too much about oil seals in general. So I decided to educate myself, which proved quite easy. One simple Google search turned up all the relevant info. Oil seals have a code...
  13. 5twins

    $200 Special

    Me and my buddy picked up the bike. Title says it's an '83, build date is 9/82, so it could very well be an early '83 build. Has a few issues of course (dirty carbs, not charging, sticking front brake), but nothing we can't deal with for the price. I think it will come back to life readily and...
  14. 5twins

    650 Rear Drum Brake Plates

    Over the past few years, I've acquired several of these from different years and after examining them, noticed quite a few differences. Most are minor or cosmetic, but some are major. It's pretty common knowledge that the brake shoes are the same for all years and that any plate will swap into...
  15. 5twins

    '77-'79 Standard In-Dash Voltmeter

    Fellow member Daniel Black installed one of these and I quite liked the results. He ran wires into the headlight bucket to power the meter. I was hoping I might find a hook-up right in the dash pod and a little wiring diagram research showed I could. But first, here's the results at idle ...
  16. 5twins

    My $40 Parts Score - I Think I Did Good

    Guy had a 650 motor on CraigsList about a month ago for $60. Sat outside and was stuck, pretty rough looking from the pics. Apparently I wasn't the only one who thought so, lol. It was still listed and now he only wanted $40. He bought the whole bike to get the wheels for an SR500 spoke wheel...
  17. 5twins

    Alloy Tops for your BS34s

    Yes, it appears this is possible. I've run across some alloy tops from a late '70s GS425 Suzuki and they're the exact same outside shape, depth, and hole pattern dimensions as the tin tops. It's possible the earlier GS400 and later GS450 tops might work as well. We're going to try them on my...
  18. 5twins

    English and Grammar

    This post and the following three posts were moved to this thread from another thread in order to keep that thread on topic. The post that these comments were in reference to was later edited making these posts no longer relevant to that thread. Ummm .... call me stupid if you like ..... but I...
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