Got this bike recently, and obviously things have been modified on it - assuming crank and brakes are original, maybe rear derailleur?

Ukai front wheel, Mavic rear wheel - both QR which I know wasn't common (or done at all then?)
Dia-compe brakes but paired up with Tektro brakes on a riser bar, and only a rear thumb shifter
Shimano Lark SS rear derailleur but Suntour cable guide (??)
Front derailleur and all logos removed except front badge.

Wondering if anyone recognizes the features, colour of it to identify the model (Monterey, Magnum, Avanti, or other?)
This is purely curiosity, so if I don't figure it out then no big deal, I just like to know

Based on the serial # (Y2KC###) it's Yamaguchi, 1982.

Photos as purchased:

During this era, Norco had three models with 27" wheels and stamped dropouts, The Avanati, Monterey and Tourister. The chainstays are too short for a Tourister and the Avanti used top tube cable stops, as opposed to tunnels. So, it should be a converted Monterey. Ironically, it has been converted to near Tourister status (i.e. rear derailleur only, upright bars). The official colour designation was "beige". Original derailleurs would have been SunTour Seven, explaining the cable guide. OEM rims were unspecified other than being "alloy" (i.e. aluminum). The front wheel had QR but the rear was nutted. Thank-you for the serial number. Enjoy your new acquisition.

T-Mar for the win!

Awesome info!
i was hoping someone would have this info.

I hadn't heard of the Tourister model, but will look it up out of curiosity. I have an Avanti SL so figured that wasn't it since there's differences I saw.

The other curious thing - it has 2 mounts on the rear for accessories. Was this common on any model or optional on them? Thought maybe it would be an indication, since I haven't seen any photos of the Monterey with 2 that I've searched.

Will be heading home soon and look some more so I don't use my data 🤣

So interestingly, my '84 Avanti SL doesn't use cable stops on the top bar (Serial SI446XXX) - this was as-purchased (have modified a LOT since then):
It does have a different rear dropout though, so the beige Norco doesn't seem to be an Avanti anyway. Just interesting to note for yourself


1984 Norco Avanti SL

Your Avanti SL is from September 1984. That's in the grey region where it could be 1984 or 1985 model. The SL ("Super Leggara" - they spelled it incorrectly) was quite a step up from the original Avanti of 1982. The tubeset was Ishiwata EX CrMo versus hi-tensile steel, The rims were aluminum versus steel and the front hub was spec'd with a quick release. The brakeset dropped the safety levers and was upgraded with hoods. Pedals were also upgraded to an aluminum quill style. Gearing was tighter, courtesy of a 14-26T freewheel. The frame rec'd forged dropouts, top tube cable tunnels and bottle bosses.

The standard Avanti was still in the 1985 lineup and by that time had rec'd upgrades of top tube cable tunnels and aluminum rims but the derailleurs had been downgraded to an Honor/Spirt combination.

I see you've replaced the brakes on the Avanati SL but everything else looks like it could be OEM, excepting consumables.

Your Avanti SL is from September 1984. That's in the grey region where it could be 1984 or 1985 model. The SL ("Super Leggara" - they spelled it incorrectly) was quite a step up from the original Avanti of 1982. The tubeset was Ishiwata EX CrMo versus hi-tensile steel, The rims were aluminum versus steel and the front hub was spec'd with a quick release. The brakeset dropped the safety levers and was upgraded with hoods. Pedals were also upgraded to an aluminum quill style. Gearing was tighter, courtesy of a 14-26T freewheel. The frame rec'd forged dropouts, top tube cable tunnels and bottle bosses.

The standard Avanti was still in the 1985 lineup and by that time had rec'd upgrades of top tube cable tunnels and aluminum rims but the derailleurs had been downgraded to an Honor/Spirt combination.

I see you've replaced the brakes on the Avanati SL but everything else looks like it could be OEM, excepting consumables.

I guess it makes sense you were initially referring to just the '82 model year - so it does add up that the beige Norco is a Monterey

That's just how I bought the Avanti.
I've changed a lot on it since (700c wheels, 3spd Campy Veloce crankset, 8spd SRAM rear, brifters, Mafac Racer brakes since for some reason the ones on there were no-name rusted brakes). Just trying to source a tool for the Campy crankset to actually get it put together and ride it!

Looking to make this beige one into my commuter to replace a Nishiki Regal that I've been having various tinkering issues with (bent crank I replaced with the one from the Avanti, creaking from BB after cleaning & re-greasing it all, shifting isn't smooth - maybe stretched chain? The guy I bought it from was a backyard mechanic coming from an automotive factory and the whole thing was covered in grease, all over the wheels, frame, etc. Had to clean the wheels several times to restore proper braking power. Just haven't had a good go with it and hoping to part ways after building this one up for my commuter instead. Think I prefer a flat bar for a commuter instead of drops anyway, so I can keep the Nishiki more original this way.

In my experience, car guys make poor bicycle mechanics. They figure that since they know cars, bicycles will be a piece of cake. My bicycle shop was right next to an automobile repair shop and the mechanics would constantly look down their noses as us, yet there was a fairly steady stream of family bicycles that they embarrassedly brought over because they couldn't fix them and had, in fact, screwed up even worse. If they had a tail, it would have been between their legs. It was so tempting to charge them their repair rate (which was triple ours) plus a 10% premium because, let's face it, they couldn't fix it. In your case, it was likely even worse because he probably wasn't really a mechanic but just an assembler, which requires limited, easily trainable skills. Regardless, almost anybody who works with cars seems to develop a god complex when it comes to mechanical products and looks down on bicycle mechanics.