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07-07-2021, 12:09 PM | #1 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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1980 Yamaha XS11 Special
Figured I'd start a new thread on the project.
As clean as the bike looks cosmetically, as always, I'm finding the ills (and bonuses) caused by others hands in the bike's past. The bike has a 4-in-1 exhaust but a stock air box, which contained an ancient Uni filter. I've ordered four pod filters for it but will keep the stock air box in the shed. I've also discovered that the bike has been re-jetted a little richer on the mains. Hopefully this means that someone knew what they were doing when the exhaust was installed. The weird thing is that this bike came in a couple different fuel feed versions. One containing a vacuum manifold (Octy) and some did not. Either mine had already been removed (common fix), or it never had one. Regardless, the two petcocks are really odd. They have an off, on, and reserve positions, along with a fourth "prime" position.....and of course, there was no arrow on the handle. Does the handle point at the position?... or the opposite side of the handle? Each petcock also had two fuel outlets each, for a total of four.....but the bank of carbs only has two fuel inlets. I finally got to the bottom of it all by internet research and also, taking them out of the tank and blowing through them, the old fashioned way. Glad I did because someone had swapped both petcocks side to side, then managed to feed the bank of carbs out of the "prime" outlets, and the "on" outlets were bridged side to side with a common hose. Either way, it was all wrong. The brake fluid looked years old but bled out nice on the rear. I replaced it with some good DOT 4. I still have to do the fronts but won't get to that until the new bars arrive. The ones on it are bent. So far each carb has been cleaning up nicely and I only found one (badly) stuck float. Got all four rebuild kits in yesterday, so that's going to be finished today.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-08-2021, 12:27 AM | #2 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Baby Steps
Got the carbs done today, as hoped. Just waiting on the new fuel tees so I can bolt them all together for mounting.
Also mounted the new intake boots. Glad I did this for two reasons. One, they're 40 years old and rubber. Two, I found two had been leaking at the face. No more..... Unfortunately, I had to Dremel off on froze-on clamp. I used what I had. Hell, they fit so tight, I may end up with a zip tie. Also, the choke lever on these notoriously break off, so I made a new one. Much stronger than the original pot metal.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-08-2021, 03:53 AM | #3 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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What a cool old bike. They were big and heavy and made great torque. Keep us updated!
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2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene" |
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07-09-2021, 09:41 AM | #4 |
Moderator
Join Date: Jul 2010
Location: Elburn, IL
Posts: 5,960
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I know where there is one of those settling in the dirt in N Wisconsin. I've asked my almost BIL to let me rescue it, but after 15 years of him hemming and hawing, I gave up. He also 1200 Goldwing rotting away in my sisters garage.
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Cheesy ______________________________________ 07 Hi Bird Enduro-Flown the Coop 07 Ural Gear Up 79 Honda CX500 77 VeloSolex 4600 V3 73 VeloSolex 3800 I'm making this up as I go.-Indiana Jones Telling me something 'is for my own good', is a fast way to a fat lip.-Me I don't even care about my own problems, why should I care about yours?-Quote on one of my favorite t-shirts |
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07-10-2021, 01:43 AM | #5 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Really hate those people. "You can't have it but I'm just going to let it rot."
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-10-2021, 01:47 AM | #6 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Carbs done and mounted on new intake boots. Got the fuel line and fuel filters delivered today.
Waiting on the oil filter before I can fire it. July in CA. It's hot. Fortunately Spot has the whole idea of the swamp cooler. She's spoiled. I keep the bottom half of the louvers pointed down to her level.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-18-2021, 12:32 PM | #7 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Since I covered a lot of this in another thread, I'll just post a short update.
In the process of rebuilding the forks, I f-ed up my very first new fork seal....ever. Another pair should be here on Tuesday. The good part is, if I f-up another, I'll have a spare! The very first parts I ordered were oil filters. They finally arrived yesterday. It's the only thing keeping me from firing the motor....other than having it dangling on a jack, at the moment because of a lack of front end. I ordered two filters for another change after the initial 50 miles. It's been a while since it's seen a fresh filter. Should be a fun week, coming up. Finally get this thing off the rack so I can start the Yamaha CT1 project.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-18-2021, 12:42 PM | #8 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Some more...
The goose neck bearings were super-chunky due to ancient grease so I dropped it out, cleaned and repacked. Butter smooth now. Also included is a pic of the fuel lines and filters Chief helped with. Dual petcocks run to opposing carb banks and everything fit perfectly. Also a pic of test fitting the new pod filters. The stock box (in perfect shape) will be stashed and sold with the bike.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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07-30-2021, 05:37 AM | #9 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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Looking great!
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2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene" |
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07-31-2021, 01:35 AM | #10 |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Shakedown cruise today. Been years since it ran (2015). I was expecting some valve issues due to build-up but no. Ran like a scalded cat. The bench sync worked out fine other than idle adjust. Snappy throttle response once operating temp and the choke rebuild acted perfectly. I could use this luck on other projects!
Ran it at cruise at 4500r's in fourth gear, cracked throttle down the road....and it sang like a Singer sewing machine. On the way back, I opened it up to about 7000 r's and after 4500, it ramped up like a 2 stroke.Wow! Tomorrow....Mrs. 2LZ is heading to her dads in Sac. More hot laps to follow.....
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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08-01-2021, 04:47 AM | #11 |
Join Date: Aug 2021
Posts: 1
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great, excellent, wonderfull. original
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08-02-2021, 04:58 AM | #12 |
Join Date: May 2019
Location: Illinois
Posts: 866
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Just kind of curious, I know the XS1100 would spank the wee strom but how would it compare down low to mid range? I'm glad the pod filters are working out for you, I too have heard of a lot of issues with them and cv carbs. Great looking bike for sure!
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2022 Venom KPR 200 Red- the fastest color 16t and 46t sprockets, NGK Iridium CPR8EAIX-9, aftermarket full exhaust system. Top speed 81GPS 2023 Venom SS3 KP mini 150– Nibbi carb, Nibbi air filter, aftermarket muffler, decat 2022 Venom Ghost chopper 250 1997 Honda GL1500 Goldwing 1978 Kawasaki KL250 https://youtube.com/@herbiesgarage681 |
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08-02-2021, 12:18 PM | #13 | |
Join Date: Mar 2010
Location: Volcano, Ca
Posts: 7,112
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Quote:
I can tell you this though, compared to the Wee (26 years tech difference), the XS11 is a TANK! Just shoving it onto my bike lift is a hernia popper. The Wee, as you've experienced, while not super-powerful, has one of the most useful power curves I've ever ridden. Completely friendly across the tach. On the XS11, it's just a brute. It's amazing how far bikes have come. Old bikes are cool and nostalgic, but man, you have to pilot them.
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350 |
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08-03-2021, 07:33 AM | #14 | |
Join Date: May 2019
Location: Illinois
Posts: 866
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Quote:
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2022 Venom KPR 200 Red- the fastest color 16t and 46t sprockets, NGK Iridium CPR8EAIX-9, aftermarket full exhaust system. Top speed 81GPS 2023 Venom SS3 KP mini 150– Nibbi carb, Nibbi air filter, aftermarket muffler, decat 2022 Venom Ghost chopper 250 1997 Honda GL1500 Goldwing 1978 Kawasaki KL250 https://youtube.com/@herbiesgarage681 |
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08-03-2021, 11:37 AM | #15 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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I've got a friend with an 82 gs1100e, stock suspension (sonic fork springs) with an 1150 engine. Ive got the same bike with an 88 gsxr1100
front end w/ sonic springs, emulators, and the much bigger brakes and Progressive shocks. Mine handles allot better, but the most noticeable difference is the brakes. I feel almost unsafe trying to stop his bike with the stock stuff.
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2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene" |
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