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1974 Laverda 3C

oldGSfan

Forum Sage
Past Site Supporter
I got this '74 Laverda 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:

1nLz9ia.jpg


Engine cleaning:

n7BELTT.jpg


A peek inside:

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Original Lafranconi silencers, very rare:

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Dell'Orto carbs during cleaning process:

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Gauges - to be refreshed:

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Interesting use of ganged spade connectors:

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Self explanatory:

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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.

v6XS2Gr.jpg


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.

TDupegk.jpg
 
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That headlamp bucket wiring hits like…

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Those cams - clean as a whistle! :encouragement:

And that red line - 6600 rpm! :eek:
 
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.
 
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. :applause:
 
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
 
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.

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

Not anodized, a bit of Mother's polish shows that. Similar to my Norton, the metal seems to be one notch above the same era Japanese. But the castings are prehistoric on the Norton. The Laverda seems a combo of the best of the two. The Ceriani fork lowers, engine cases, etc are so good. I need to avoid over-polishing; I don't like the look. The cases are sand cast and rough but charming, IMO.
 
Getting into all the polishing, cleaning, and finding it's all quite good. I only had a quick look at the inside of the tank and thought it had rust. I checked the underside and it all seemed quite solid, so I figured it's recoverable, but dang, more rust removal from a tank, no fun.

Well, after a better look, it's mostly dried ancient (25-year-old?) gas, with the flaky chunks being carbon. I got 2 cans of Berrymans B12, and mixed with gasoline at about 1:4 ratio. I soaked it 2x so far overnight, half a can each time. It's cleaned up very well. I'll use up the other can with more gasoline, and then switch to de-rusting - there will be hardly any rust in the deep recesses of the tank, but a bit on the hump. The citric acid/washing soda mix will clean it up no problem. I think perhaps some BB's will be easy on the inside finish. It doesn't need aggressive scraping.

The tank is very nice for original paint. Obligatory picture:

VXDMA3x.jpg
 
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My gauges are apart, new faces and inner gaskets ordered from Germany. I've used the supplier before on my Honda CB750K (CB750faces) and was happy to see they do the Laverda faces. Very good value and quality. Mine are pretty faded, and the speedometer is spider-webbing.

ljjGV1r.jpg


zyPXb86.jpg
 
My preferred method for cleaning tanks is a length of small linked chain - about 2m or less of 1/2" light duty chain like you'd find on lavatories.
I moved to this after spending more time getting the gravel out than I did actually cleaning the tank.
 
We'll all be waiting for an audio/visual start up clip. Particularly audio. Before that (amateur?) track clip you posted recently, I'd never heard the big Laverda triple before, nor anything like it.
 
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