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1974 Laverda 3C

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    1974 Laverda 3C

    I got this '74 Laveda 3C (1000cc triple) locally, very complete and original, just sat for 20 years. It has extremely good paint, chrome, and stainless. Just needs a full going over. 12.7K miles on it. It was originally purchased by a female airline pilot (titled as a '75 but it was built in July '74). The 2nd owner was a JPL engineer. The seller was related to the latter. He restores bikes but seems to be focused on Ducati and Benelli.

    I'm cleaning and checking every part, need to up my game on this one. The engine looks pristine inside, from examining the valvetrain, intake/exhaust valves and using a borescope on the cylinders - cross-hatch still visible. I sprayed some fogging oil in the cylinders and some assembly lube on the cams and turned it over. All valve clearances are in spec. Cleaning fastidiously and compiling a list of parts. A supplier in Australia seems the best, DAMracing - over $800 USD escapes tariffs so I'll exceed that amount, but not by much, thankfully. That should get me most of the way there.

    The bike is now on my hoist after cleaning the engine - I'll do a bit more to it later, but it's pretty good now. The front end is off, forks are Ceriani 38mm, and are very nice. They have never been apart, and nothing needs replacement except the seals. There are 2 per fork, stacked on top of each other, but many cut the bottom rubber out and use as a spacer, and run just one - less stiction and cheaper that way.

    The overall simplicity, robustness, and quality of the bike is impressive. ND gauges (new faces available, will get), Bosch ignition, alternator, and starter, and other Italian bits that are common on Guzzi and Ducati like the Cerianis, the Dell'Orto 32mm PHF carbs, Borrani wire wheels, and Brembo twin discs. Here are some progress pics.

    Bike, as purchased, just arrived home:



    Engine cleaning:



    A peek inside:



    Original Lafranconi silencers, very rare:



    Dell'Orto carbs during cleaning process:



    Gauges - to be refreshed:



    Interesting use of ganged spade connectors:



    Self explanatory:



    Fork bottom hex nut removal. They were on since new, very tight. Used a Suzuki damper holder 'stabber' tool, heat outside, ice on bolt, and a makeshift allen wrench to bust them free. Internals are very nice. One seal was stuck and I had to get creative.



    It has pods that fouled the side covers, tiny chips. I scored this original air box with rubber snorkels (not shown) for $150, a bargain. Still has the stickers on the sides.













    Last edited by oldGSfan; 12-23-2025, 07:11 PM.
    Tom

    '82 GS1100E Mr. Turbo
    '79 GS100E
    Other non Suzuki bikes

    #2
    That headlamp bucket wiring hits like…

    ​​​​​​
    Last edited by Rich82GS750TZ; 12-23-2025, 09:08 PM.
    Links

    Comment


      #3
      Those cams - clean as a whistle!

      And that red line - 6600 rpm!
      1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

      2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

      Comment


        #4
        Originally posted by Rob S. View Post
        Those cams - clean as a whistle!

        And that red line - 6600 rpm!
        Pretty sure it's the other side of the pie, 7500 RPM. Has loads of mid-range grunt.
        Tom

        '82 GS1100E Mr. Turbo
        '79 GS100E
        Other non Suzuki bikes

        Comment


          #5
          My son's a riot, I needed his help holding a light as I was removing some part, and once again, he's on his phone. I said "put the GD phone down for once." Next thing I know, I hear Dean Martin singing "That's Amore" from his phone. Got a good laugh.
          Tom

          '82 GS1100E Mr. Turbo
          '79 GS100E
          Other non Suzuki bikes

          Comment


            #6
            Originally posted by oldGSfan View Post

            Pretty sure it's the other side of the pie, 7500 RPM. Has loads of mid-range grunt.
            It reminds me of my CB350 tach. Went up to 12k, but only 9-11k was 'red.' Book said operate only for short periods in red, never exceed 11k. I hope your Laverda is as bullet proof as my Honda was.
            1982 GS1100E V&H "SS" exhaust, APE pods, 1150 oil cooler, 140 speedo, 99.3 rear wheel HP, black engine, '83 red

            2016 XL883L sigpic Two-tone blue and white. Almost 42 hp! Status: destroyed, now owned by the insurance company. The hole in my memory starts an hour before the accident and ends 24 hours after.

            Comment


              #7
              Wow. It's a beauty!
              I had forgotten about those multi-adjustable handlebars. Very nice.
              2@ \'78 GS1000

              Comment


                #8
                Originally posted by steve murdoch View Post
                Wow. It's a beauty!
                I had forgotten about those multi-adjustable handlebars. Very nice.
                And footpegs too, which I appreciate.
                Tom

                '82 GS1100E Mr. Turbo
                '79 GS100E
                Other non Suzuki bikes

                Comment


                  #9
                  Thats a beauty already.
                  1986 1150EF
                  2008 GS1250SEA

                  Comment


                    #10
                    Very nice bike! Specs compare to early 80s 750s.
                    Specs here: https://www.motorcyclespecs.co.za/mo...00_3c%2073.htm
                    1982 GS1100G-
                    1990 GSX750/1127
                    1987 Honda CBR600F Hurricane
                    1985 Kawasaki GPz750

                    Comment


                      #11
                      But with SOOOOO much more character and a sound no I4 could ever produce.
                      "Thought he, it is a wicked world in all meridians; I'll die a pagan."
                      ~Herman Melville

                      2016 1200 Superlow
                      1982 CB900f

                      Comment


                        #12
                        Originally posted by GS1150Pilot View Post
                        But with SOOOOO much more character and a sound no I4 could ever produce.
                        Some cool footage of a 3C at Spa, not sure the speeds as his speedo cable broke. Skip to about 6:30, couldn't make the link that starts at that point.

                        Tom

                        '82 GS1100E Mr. Turbo
                        '79 GS100E
                        Other non Suzuki bikes

                        Comment


                          #13
                          Originally posted by oldGSfan View Post

                          Some cool footage of a 3C at Spa, not sure the speeds as his speedo cable broke. Skip to about 6:30, couldn't make the link that starts at that point.

                          Heh. Amusing how he just rode around the outside of the Seat Polisher @ 8:37
                          Dave
                          '79 GS850GN '80 GS850GT
                          Only a dog knows why a motorcyclist sticks his head out of a car window

                          Comment


                            #14
                            Removing the 20+ year old hardened tires off the beautiful, 99% unscarred Borrani wires. My method is to make some cuts with a reciprocating 'Sawzall' saw, medium-coarse blade, stopping short of the rim of course. then hand-saw a bit to get real close. I put a guard on the rim (a large washer, bent, taped in place) where the saw may hit. Rope inside each side's bead holds them inwards, spoons lock the bead up a bit, then cut the bead wire with a metal blade. No damage done. Worth the hassle; they will be beautiful. I only see one spoon mark (lower right 2nd pic) on the front, none on the rear. It will sand/polish out and be fine.



                            Last edited by oldGSfan; Yesterday, 07:28 PM.
                            Tom

                            '82 GS1100E Mr. Turbo
                            '79 GS100E
                            Other non Suzuki bikes

                            Comment


                              #15
                              If the rim is anodized, sanding will remove what's left, which means more corrosion going forward. A double edge sword...
                              Ed

                              To measure is to know.

                              Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                              Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                              Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                              KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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