New to me ST1100! I find another community to belong to!

(Updated March 28th 2025)


Update and thoughts:

I’ve been knee deep in carb land. I think I’m on the other side of this game now with them. Basically rebuilding the carbs to near-new condition with 99% new guts. Part of this endeavor got me purchasing an ultrasonic cleanser, that came in handy and they really cleaned up well! Weather is changing, so I think painting will be in the future soon.

When I rode the bike to the DMV i noticed the front brakes were crap. not so much squishy, as they simply had no bite. The rear brake did a better job of slowing the bike down. I imagine when I take the front wheel off to do tire and bearings, scrubbing the rotors with steel wool and a new set of pads will do it a lot of good. That and the new master cylinder and steel braided hoses…

One thing that I have not yet disclosed is how much I’m into 3D printing. I can print relettivly large items too, like half-meter in length, height, width. What has surprised me is how there is a distinct lack of 3D printed fairings and tidbits for motorcycles. I would have thought rapid prototyping and iteration would go hand in hand with motorcycles… I can print in ABS, ASA, Nylon and Carbon-Fiber reinforced mixes of those. Not trying to go race-mode here, but maybe I can find a way to give the bike a lightly “this-century” look… nothing crazy, but sharper lines would look good… lol

Someone 3D scanned one of our rearview mirrors, I bought a copy of the 3D file, and I’m going to see if I can mate a different rearview casing onto our stock fairings. Keeping the original mounts.. we will see… I might end up buying a 3D scanner myself just so I can get accutrate mounting points for plastics. Maybe I can do a full re-dress kit… Again… We’ll see.




Parts I’m working on:
  • Panniers, refurbishing what and where I can. Trying to figure out if I can find a trunk with a built-in backrest and arm rest for pillion.
  • Making the weather bend to my will. no one likes working in a cold garage.

Parts on hand STILL waiting to be installed:
  • New springs for fork
  • fork oil
  • Choke cable
  • new rear suspension
  • New Carbs, upgrading to #40/128 jets, all new guts, rebuilding CV piston diaphragm
  • Fork rebuild kit
  • Master and slave cylinder rebuild kits all around
  • Braided front brake lines (2x direct from single banjo)
  • Brake pads all around
  • Fog lights
  • New Rear suspension (went HyperPro for this one)
  • LED lights for turn signals, tail lights etc
  • new engine guards
  • Square piece of plastic that goes around the ignition key thing
  • Honda Valve Cover Gaskets
  • Fuel enriching valves A and B versions
  • Clutch lever Switch
  • Gasket for the locking pocket glove-box-thingy
  • Keys, blanks with Honda ST1100 logo on them! Set A
  • Everything to put the stock bar ends back on. So new rubbers, new inner weights, new screws, new snap rings and new bar-ends. (Why would one take this out?)
  • Air cut-off valves for carbs
  • new floats for carbs
  • Metric ton of Allen-head fairing screws
  • Base coat paint, Glitter effects coat paint, 2-part 2K clear paint
  • Front and rear wheel bearings
  • New tires
  • New silicone coolant hoses and o-rings
  • Moly paste and o-rings for spline
  • Bucket of grease
  • New oil filter (again)
  • Oil (again)
  • Brake fluid for flush
  • Coolant for flush
  • Apple Car-Play screen
  • Goldwing front footpegs
  • New air box, the sub-filter clip was broken on mine, I zip-tied it but it tasks me. it tasks me, and I will answer.
  • Cush drive rubbers
  • Hose clamps
  • Gate Timing Belt
  • CV piston diaphragms
  • 49-States non-ABS carb set
  • Parts Unlimited Carb rebuild kits
  • Battery Holder
  • 2x more cans of 2K clear-coat
  • Seals for panniers
  • Honda Logos and Marks (What I can, what I can’t find I’m going to cut my own (I have a vinyl cutter))
  • Honda Valve Cover Bolt Gaskets
  • Horns (Plural, i hate the rinky dinky one on the bike, and it is rusted.)
  • METRIC hoses, everywhere.
  • Throttle cables
  • 3D scan of a ST1100 mirror case (I’m thinking about 3D printing a new set, but that I can use with a commonly available LED lights and lenses)

Need to buy:

  • Clear front signal lenses
    • This might be something other than making my own clear ones, I’m thinking all-new parts
  • LED signal relay
  • USB-C Power Adaptors
  • Bluetooth headset for helmet
  • Braided hose for clutch
  • Braided hose for rear brake
  • Front-right-mid fairing
  • Another metric ton of fairing screws
  • Sissy-bar and arm-rests for passenger (preferably stow-able)
  • Passenger floorboards if there is any room for that

Need to remove:
  • Top-Trunk rack
  • Stickers
  • EGR/PAIR system (don't even care for the chrome tubes)
  • Dirt and grime for 62K miles and 24 Years

Need to figure out:
  • How to make the bike look a little less 1990's (this is personal taste)
  • How to make the bike not stink like a lawnmower when I ride it
    • This i am chalking up to the carbs being out of whack… i think it will get better
  • How to shift out of first to second without grinding gears (all other shifts are fine)
  • How I am going to paint the bike
    • Rattle-Cans for the Win!!!!! Bought a paint booth too. I’ve got four cans of 2K clear coat now.
  • What I'm going to do about the painted gusto-grey parts
    • Rust-o-lium Automotive trim and plastic paint. It adds a little more texture, it’s black and will give a nice satin look to the “trim” parts.
  • If I like the stock seat shape and color
 
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Welcome to STOwners - from Harrow, ON Canada.

Great bikes and tons of knowledge here!

SUGGESTION: you might consider changing the timing belt. That one is likely pretty old and since it is a "rubber" component, I view them as sort of like tires: they have a best-before date. If it breaks or loses a tooth, you could scrap the engine.
 
One thing I didn't see folks talking about is the fuel shut off. This can cause an issue out on the road. It can put a crimp to a nice day. It is not a hard thing to overcome, but a issue on the side of the road. Folks, feel free to chip in with the fixes.
 
One thing I didn't see folks talking about is the fuel shut off. This can cause an issue out on the road. It can put a crimp to a nice day. It is not a hard thing to overcome, but a issue on the side of the road. Folks, feel free to chip in with the fixes.
Covered in post # 48 by the Maintenance Items Needed for a New (old) Bike check-list document that was suggested for his reading pleasure.

The temporary fix is to simply bypass the fuel cut-off valve. The permanent fix is to either repair/replace it or leave it bypassed permanently. Dealer's choice- Depends on your preference.
It is pretty simple to bypass it. Below is a link to an article on how to do this. It was written by Michael who had to do it as an emergency road-side repair while on a trip.

ST1100 - How to do an emergency bypass of the fuel valve

 
Alright spare carbs from eBay rebuilt! Went the #40/#128 jet routes. Parts Unlimited rebuild kit. White stuff on the pistons is some dry PTFE (teflon) just to keep things moving before they land on the bike. I'm sure gas will wash it all off with a quickness. idle screws are 2.5 turns out.

I got a 4-channel digi-sync on order, also got an anemometer, a digital tachometer accurate to +/- 2 RPM, and a wide-band O2 sensor probe to stick up the tailpipe!

I'll pull the carbs from the bike and place them gently somewhere safe... lol keep them as good as can be without messing up sync. Put on these new carbs sync them, idle-drop, and make sure they are as stoich as I could make them... Thinking of using the PAIR ports for individual O2 readings... this is just for setting the carbs of course. (or is it... hmm that's a good spot to mount O2 sensors for each carb...)
 

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My brother tells me I'm going to end up spending $7K on a bike worth $2K or less... I told him it's not about the value of the bike to others, but how much I value the stuff I'm doing with it. In the end knowing a bike top to bottom, inside-out and being able to trust it for miles is more valuable to me then a brand new NT1100... Although it's not a V4... I really really like V4 engines. There might be a VFR1200F in my future But I need one with shaft-drive and DCT.... not liking chain-only for DCT in USA.
 
Working on the panniers now. Got new handles, seals, and bumper. Painted the plastics using rustoleum matte trim paint. Cast iron metallic for primary color. Also planning on lining the inside with trunk fabric. Trying to make it look nice… one thing I did not like was the loose and rattly hinges. I got new ones as seen in photos, these are cast aluminum with nylon bushings should help with look/feel.
 

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