Necro1300R
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Hardest part of rebuilding is waiting for parts to come in. Until then, something to occupy the mind.
New Owner, New Biker, New Problems
- Thread starter Necro1300R
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Wow, what a great introduction to a Hayabusa. I wrecked my bike, got run down by a drunk driver back in 2014, and had to rebuild the entire bike essentially. So please pay attention to every nut and every screw, every piece of wire, clean it up end to end and put some new fairings on it. The fuel system is particularly an issue. I'd clean out the tank and replace the pump, validate fuel pressure, then I would clean out the fuel rail while you're cleaning out the injectors, that's a good start. If you have a clean fuel system and fresh lubricant, a Busa motor will essentially run. After that, it's all electrical. May be a fresh wiring harness from a running bike would be a good idea. Good luck with your find. Welcome to the ORG, and ask lots of questions. There are a lot of people in here that know a lot about this bike.
Necro1300R
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Tank sanded. 40 grit up to 400. Primer soon. Sensors arrive soon too.
Necro1300R
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Hello again friends, today and yesterday have been interesting. I was scrolling through marketplace as one does, looking for parts and really anything interesting. Came across a listing with another poor 'Busa sitting in someone's storage locker. Being the bird caretaker I seemingly aspire to be, naturally I hit them up asking for a price. I saw a clean looking fuel tank I wanted and the price seemed right.
"What's your price on the 'Busa?"
"250."
Gentlemen and Gentlemen, easiest choice I've ever made in my life. So now I'm the owner oftwo one and a half Hayabusas. No motor, no dash, not a lot in the way of plastics. That's fine. What I did get was still more than I bargained for. I got a full, very clean painted frame with a welded, extended swingarm. I got a lot of very clean, chrome trim pieces. A fuel tank I haven't yet inspected, but it came with a fuel tank cover. The pump is still in the tank, so assuming it's a full assembly I'm already well beyond the 250 I put into this. I got some crazy looking rims that seem expensive. The rear brake rotor is also a pretty penny from what I've seen. There are more miscellaneous parts like a cam shaft and covers as well as a coolant reservoir with hoses and other plastic parts. I'll pick it all apart tomorrow and figure out what I can and can't really use.
Tank w/ cover:
Fuel pump, pray for a full assembly.
Painted frame and front rim.
Back rim w/ rotor.
All together.
"What's your price on the 'Busa?"
"250."
Gentlemen and Gentlemen, easiest choice I've ever made in my life. So now I'm the owner of
Tank w/ cover:
Fuel pump, pray for a full assembly.
Painted frame and front rim.
Back rim w/ rotor.
All together.
Welcome to the oRg. Did you flush the fuel cell ? No need to straighten the fuel injectors and system out to dump rust etc. right back thru them. Each injector has a filter. Thermostat is an easy, cheap replacement, water pump should be good. Radiator cap is another easy cheap replacement
Necro1300R
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Okay, my friends! It's been a minute since my last update. To answer the last question, yes the fuel system was flushed.
Since my last update, the tank was primed, painted and clear-coated. Then,promptly scratched!
Christmas day, the new sensors were put on and the bike now officially runs! Took my first ride that night. I've put about 30 miles on it, almost exclusively parking lot and slow speed maneuvering.
First night review? Tons of fun, scary as a motherfucker.
Took me a while to stop shaking and woke up sore the next morning. I've tried to get out every day I've had time to ride a bit. Back doesn't hurt nearly as much as it did the first night and now I don't get so sore. Body positioning is better than it was initially and my practice with slow speed maneuvers has increased my confidence exponentially. Even got a little seat time on wet asphalt. I am almost comfortable with full lock turning. The hardest part so far has been throttle control from 1.5k-3k, but covering the front brake lever and using my fingers as a gauge has greatly improved that for me. I'll keep putting parking lot miles on it and update and any changes from here. Picture of new tail light tomorrow.
Obligatory picture of my chicken strips, so you can laugh.
Since my last update, the tank was primed, painted and clear-coated. Then,
Christmas day, the new sensors were put on and the bike now officially runs! Took my first ride that night. I've put about 30 miles on it, almost exclusively parking lot and slow speed maneuvering.
First night review? Tons of fun, scary as a motherfucker.
Took me a while to stop shaking and woke up sore the next morning. I've tried to get out every day I've had time to ride a bit. Back doesn't hurt nearly as much as it did the first night and now I don't get so sore. Body positioning is better than it was initially and my practice with slow speed maneuvers has increased my confidence exponentially. Even got a little seat time on wet asphalt. I am almost comfortable with full lock turning. The hardest part so far has been throttle control from 1.5k-3k, but covering the front brake lever and using my fingers as a gauge has greatly improved that for me. I'll keep putting parking lot miles on it and update and any changes from here. Picture of new tail light tomorrow.
Obligatory picture of my chicken strips, so you can laugh.
New to riding but obviously not new to restoration. What a project
Necro1300R
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Middle joining piece? Is it part #47311-24F00?
If so, I'm not gonna say no to parts! Obviously, I'm willing to compensate you for it.
Necro1300R
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200 Miles in, a lesson in patience.
"Uh oh, this sounds grim."
Fret not my friends, no crashes or drops yet. In fact it's been mostly parking lot miles per my last update and I've been enjoying riding immensely so far. I plan on grabbing a gopro soon so I can record my progress and upload anything else I do to the bike from here on out.
"So what's the issue?"
Time to harken back to the fuel filter mod I performed following the forum's instructions. You see, when I bought the bike, it had what appeared to be an external fuel filter on it with a band around it. The previous owner had not, however, performed the mod itself. So I took the time out of my day to perform the mod and replace the parts using the part numbers provided in the post. The issue is that in-so-doing I thought the filter mentioned on the forums looked a little large. Too large, even. This was where I made mistake number one. I very brazenly assumed I knew better than the people that knew what they were doing and opted to find a smaller filter similar to the one the last owner's to use instead. So I did, threw it on, clipped the lines accordingly and it ran and ran well. That is until recently on the way home from work I started having issues with the bike seemingly leaning out.
"Welp, looks like the small filter is coming back to bite me in the ass."
So I grabbed what I assumed to be the oversized filter, slapped it on, clipped the lines again, got it situated and down the road I went.
The bike was still falling flat on its face. Pull over into my usual parking lot and lift the tank yet again. Using my Mk. 1 eyeballs, I eventually find the issue. The small hose attached to the vacuum chamber had slipped off, causing the bike to run poorly.
So here I am with the larger filter on the bike, newly clipped fuel lines, and a problem that required a bit more brain power than I'm capable of. Throw the line on, ride it back, still having issues. Get home, lift the tank, eye the vacuum chamber again, find nothing. Carefully close the tank, see the line is kinking. Start the bike with the tank lifted, no problems. Lower the tank, notable change in RPMs until the tank is fully down and the bike dies. No start with the tank down. Lift the tank, bike starts.
So now I get to spend more time redoing the fuel lines so they hopefully don't kink and the bike runs properly again. How fun. If you're wondering why I don't go back and use the old filter, I figured it was better just to keep the new one on because the older, smaller filter was the one I put on immediately after the tank flush so I assumed it was gummed up. Now I'm committed to using the larger one.
TL;DR Fueling issue. Thought it was a gummed up fuel filter, changed it out without confirming the issue. Issue was vacuum leak and now fuel link kinks.
So with all of that being said, why are unicoils so damn expensive?
"Uh oh, this sounds grim."
Fret not my friends, no crashes or drops yet. In fact it's been mostly parking lot miles per my last update and I've been enjoying riding immensely so far. I plan on grabbing a gopro soon so I can record my progress and upload anything else I do to the bike from here on out.
"So what's the issue?"
Time to harken back to the fuel filter mod I performed following the forum's instructions. You see, when I bought the bike, it had what appeared to be an external fuel filter on it with a band around it. The previous owner had not, however, performed the mod itself. So I took the time out of my day to perform the mod and replace the parts using the part numbers provided in the post. The issue is that in-so-doing I thought the filter mentioned on the forums looked a little large. Too large, even. This was where I made mistake number one. I very brazenly assumed I knew better than the people that knew what they were doing and opted to find a smaller filter similar to the one the last owner's to use instead. So I did, threw it on, clipped the lines accordingly and it ran and ran well. That is until recently on the way home from work I started having issues with the bike seemingly leaning out.
"Welp, looks like the small filter is coming back to bite me in the ass."
So I grabbed what I assumed to be the oversized filter, slapped it on, clipped the lines again, got it situated and down the road I went.
The bike was still falling flat on its face. Pull over into my usual parking lot and lift the tank yet again. Using my Mk. 1 eyeballs, I eventually find the issue. The small hose attached to the vacuum chamber had slipped off, causing the bike to run poorly.
So here I am with the larger filter on the bike, newly clipped fuel lines, and a problem that required a bit more brain power than I'm capable of. Throw the line on, ride it back, still having issues. Get home, lift the tank, eye the vacuum chamber again, find nothing. Carefully close the tank, see the line is kinking. Start the bike with the tank lifted, no problems. Lower the tank, notable change in RPMs until the tank is fully down and the bike dies. No start with the tank down. Lift the tank, bike starts.
So now I get to spend more time redoing the fuel lines so they hopefully don't kink and the bike runs properly again. How fun. If you're wondering why I don't go back and use the old filter, I figured it was better just to keep the new one on because the older, smaller filter was the one I put on immediately after the tank flush so I assumed it was gummed up. Now I'm committed to using the larger one.
TL;DR Fueling issue. Thought it was a gummed up fuel filter, changed it out without confirming the issue. Issue was vacuum leak and now fuel link kinks.
So with all of that being said, why are unicoils so damn expensive?
What the hell is a unicoil? Like a helicoil? Or you mean the coils for the spark plugs? If so, those either work or they don’t. Probably don’t need to change em.
I have the circled part if u need it. Maybe some other stuff like an extra coil if u want to swap some around to chase a problem.
I have the circled part if u need it. Maybe some other stuff like an extra coil if u want to swap some around to chase a problem.
Necro1300R
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A unicoil is something I hadn't heard of before showing up on these forums either. It looks like a spring welded to a piece of steel but you slide it over a hose and bend it as you see fit and it appears to hold that shape. Supposedly it's good for preventing kinking while protecting the hose.
Here's an Amazon link to the unicoil.
Though pricey, they may be worth investing in.
Necro1300R
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Man, maybe it's not about the length, it could be about how you use it and the personality of the bike attached to it!
I'll probably go buy another two feet and redo my lines.
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