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  • #16
    I measured the OD of the inlet and airbox mouths of the carbs. Well, I say measured... I got the OD of the rubber manifolds where they slide over the carbs, using a Vernier gauge and then deducted the thickness of the rubber x 2. I measured this thickness by pushing a steel ruler across the joint of the carb and manifold. The thickness of the rubber on the inlet side looks to be 7mm and, on the airbox side, 5 or 6mm

    I get the OD of the inlet to be 43mm and the airbox side is 55mm.

    My gut reaction, having stripped loads of XS carbs is that the XJRs will physically fit. I dunno about the jets etc being right though, although they may be.

    I wonder if the rubber inlet manifolds from an FJR1200 would bolt straight onto the XS? I have the FJR ones n my bike as the OEM ones are restricted by reducing the ID.


    XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

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    • #17
      One more question. What is the total depth of the carbs edge of inlet throat to edge of outlet throat? Roughly
      Nathan
      KD9ARL

      μολὼν λαβέ

      1978 XS1100E
      K&N Filter
      #45 pilot Jet, #137.5 Main Jet
      OEM Exhaust
      ATK Fork Brace
      LED Dash lights
      Ammeter, Oil Pressure, Oil Temp, and Volt Meters
      Green Monster Coils
      SS Brake Lines
      Vision 550 Auto Tensioner

      In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

      Theodore Roosevelt

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      • #18
        Originally posted by natemoen View Post
        One more question. What is the total depth of the carbs edge of inlet throat to edge of outlet throat? Roughly
        Ask as many as you like, Nate.

        You want the width of the carb, when viewed from the side of the bike, correct? It is 100mm.





        Here's another measurement which might help...45mm as per pic below
        Last edited by James England; 07-29-2013, 10:17 AM.
        XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

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        • #19
          Originally posted by jetmechmarty View Post
          There is likely little to no support
          what makes you say that? Tut tut....guessing aren't we?

          The XJR1300 engine and carbs are used in the US in racing cars. I bought a spin-on oil filter adapter and carbon fibre gearchange rod from the USA. They aren't available here in the UK at all. Have a look at the carb stuff too...... The world is a small place these days, so there is always support. I buy loads from the USA and send things to loads of other countries including, from USA three lots of Dyna coils, a complete GL1000 exhaust system, oil filter adapter and gear linkage, forged alloy wheels from Japan, any amount of things from Europe. I've sent the precious rear wheel bearings the world over.


          http://www.rpmracingca.com/proddetai...nfilteradapter
          Last edited by James England; 07-29-2013, 10:32 AM.
          XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

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          • #20
            James,

            here's really good bit of info for you. Could save you a load of ballache.

            http://www.benefiscal.co.uk/forum/in...?topic=11257.0

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