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  1. highboy_coupe

    1980 SE Coil mount size

    I wonder if anyone can help me, I measured my coil mount holes at 100mm centre to centre, yet when I try to look for a new coil they all seem to be 90mm, how is this possible?? I bought a cheap coil on the off chance it would fit and it is just over 90mm, so no. Was there any variance in the...
  2. highboy_coupe

    BS34 alternative intake manifolds

    Hi guys, Quick question, my carbs have vacuum ports so the vacuum ports on the intake manifolds are now redundant, is there an intake manifold with no vacuum port that will fit the BS34? Or am I just looking at solid aluminium intakes for the likes of CR carbs, the only reason I'm not so keen on...
  3. highboy_coupe

    Swingarm bush, bronze, steel? Who knows

    Hi, I went to put in my new swingarm bearings, and after cleaning up the swingarm a bit, I am not sure what bushes I have got here, could do with some advice on what they are and how to remove them of you don't mind. They looked to be dark coloured metal, after a scrub the bushes look dull, not...
  4. highboy_coupe

    Fuse box to busbar/single input?

    Hi, I think a busbar fuse block would be neater, these typically take a single input and act as a fused distribution block: The wiring diagram for my (80) XS shows that the main 12V from the battery is fused, then powers on the brown wire back to the fusebox when ignition is tuned on...
  5. highboy_coupe

    Left switch gear, which headlight wires for barebones loom?

    Hi, I have consulted various wiring diagrams, and I have got this kind of wrong once, so now I consult the oracles.... I have a greatly reduced wiring loom, no 80's safety stuff left, no starter relay etc. Am I right that for the headlights switches I only need yellow/blue in (originally from...
  6. highboy_coupe

    Wanted - Front 19" mag wheel to rear conversion

    Hi, I know it's a long shot but nobody makes these in the UK, I am after one of these kits from Omars/MikesXS that lets you bolt the sprocket to a front mag wheel an use it as a rear. Thanks
  7. highboy_coupe

    Reducing midrange flat spots with pre-carb runners

    I was reading an interest article today by someone with an inline 4 engine with CV carbs, he had fitted K&N filters and had developed a midrange flat spot due to poor vacuum at part throttle; too much air turbulence around the carb mouth. He found that rather than fitting covers, or a...
  8. highboy_coupe

    For Sale - Various parts in the UK, midlands area

    Hi, Before I stick all this on Ebay, I though I may as well put them up here: All from an '80 special Air boxes including link pipe - a few scrapes, work well - £40 BS34 carbs - new float needles, o-rings and gaskets, good diaphragms, worked well - £100 Safety relay - dual unit for...
  9. highboy_coupe

    Another "diagnose my mystery noise" post.....

    I know it's really hard to judge from a crappy phone video which isolates the treble, unfortunately I don't have any "real life" XSs near by that I can go and inspect, so any input would be really helpful. I replaced the missing washer on my cam-chain tensioner, which removed one metallic...
  10. highboy_coupe

    The ignored other bike...

    Here is my most ignored bike, a Kawasaki VN900 that has a fair few modifications to it, I remapped it with a power commander, made a 2 into 1 exhaust and adapted a Ramair filter by fabricating an ally plate to accept velocity stacks. It is lowered 2" and has been on a diet.... It's got a Kwak...
  11. highboy_coupe

    The old missing cam chain adjuster washer....

    I was wondering if there's a reason why many owners report that the cam chain adjuster washer is missing? I mean, why would a PO take the rod out completely, why would they remove the washer, and why wouldn't they care to replace it? Mine was gone, I found a rubber washer that fit, but I am...
  12. highboy_coupe

    KYB shocks on '80 special

    I've read a few threads where people mention having KYB shocks on the rear; where these standard equipment on specials? Are these the same shocks that people say "anything is better" than? My shocks have silver KYB stickers on the bottoms, they are 12.5" long and (although I have nothing to...
  13. highboy_coupe

    Here are CAD files for the Blue/Gold spot caliper mount

    I have made a 2D template for cutting your own adapters to fit Yamaha gold and blue spot break calipers to 35mm forks. Feel free to edit them to remove a bit of weight, or change the shape a little, it's easy! The main thing is that the 10mm holes are in the correct place to seat the caliper...
  14. highboy_coupe

    Found a new alternative brake disc that fits

    TLDR edit: I have purchased and fitted one and this disc fits perfectly with the original caliper, it weighs 4.5 lbs (2.04KG). https://www.chinesemotorcyclepartsonline.co.uk/partno_BDSC005 Hello, First of all, I am new so this is my introduction. I'm in the UK and have imported a 1980 special...
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