Technical Summary (Red)

Much of this build log has been notable thoughts along the way. I did include a few technical notes here and there, but it was never intended to be a technical reference. Now that the project is done (except for some smaller add ons to come) I thought I would provide a more comprehensive technical review of what was done.

Donor Bike: 1985 R80 RT with 163,000 advertised miles and 263,000 actual miles.

1985 BMW R80 RT
1985 BMW R80 RT as purchased in 2022.

The bike was fully disassembled. Every part was examined, refreshed, replaced, or upgraded during the conversion.

Motor:

  • New cam followers
  • New timing chain and all related parts
  • New oil pump and cover
  • Installed Siebenrock 1000cc PowerKit
  • New bearing shells
  • Rebuilt heads
    • New valves, springs, seats, guides
    • thread repairs as needed
  • New retro valve covers
  • New EME charging system + Thunderchild diode board
  • New optical ignition system
  • Thread repairs on timing cover due to failed heli coils
  • New starter
  • New breather hose
  • New Dynatek coil
  • New oil pressure sensor
  • Replaced starter cover and airbox base with old version (no pulse air plumbing)
  • New clutch

Gearbox:

  • New bearings throughout
  • Added the famously missing circlip
  • Replaced 5th gear with the “taller” Siebenrock version
  • Replaced all springs and clips on the shifter mechanism and added the bearing instead of the plastic ring
  • Brand new gearbox housing
  • New boot on clutch throwout rod
  • New neutral switch

Swing Arm / Drive Shaft / Final Drive:

  • New bearings
  • New bolts
  • New boot & clamps
  • New thrust adapter
  • New clutch bell housing
  • Rebuilt final drive

Wheels / Suspension:

  • New bearings
  • Replaced front axle
  • New Fork Tubes
  • New Fork Stanchions
  • New rear shock
  • New Tires
  • Vapor honed wheels
  • Added gators

Steering:

  • Added ToasterTan top brace
  • New bearings
  • New split nut and top nut
  • New headlight ears
  • Added K75S handlebars, dash pad, ignition switch
  • Custom bar clamps
  • New combination switches
  • New grips
  • Reconditioned throttle sleeve and choke control

Fuel / Air System:

  • Rebuilt carburetors (twice 😉 )
    • New jets, floats, etc
  • Removed pulse air system
  • New pet cocks, fuel hoses
  • Cleaned tank, no reseal needed
  • Completely new Exhaust from nuts to silencers

Frame / Body:

  • Added Siebenrock S Fairing kit
  • Custom smoke red paint
  • Powder coated frame
  • Added black paint to select motor parts
  • New OEM dual bench seat
  • New OEM signal housings
  • New OEM center stand
  • New Surefoot side stand
  • New front foot rubbers
  • New shift lever rubber
  • New OEM rear foot pegs
  • New FlatRacer Europa fuel cap
  • New choke, throttle, clutch cables

Brakes:

  • Rebuilt and painted calipers
  • Converted to pure dual line setup with double banjo bolt
  • New master cylinder
  • Custom Spiegler brake lines
  • New brackets / grommets
  • Inspected, cleaned rotors (they were nearly new at the start)
  • New front pads and rear shoes

Electrical:

  • Installed EME/NWT R21 system
  • Made custom wiring harnesses with Deutsch DTM connectors throughout
  • LED lighting throughout, including KatDash cluster
  • New instrument housing and front cover
  • Fabricated a replacement clock adjustment knob (seriously surprised that I could not find one of these)
  • New MotoBatt Battery
  • New brake switches

Miscellaneous and notes:

  • Every other wearable part was replaced
  • All grommets, clips, brackets replaced
  • All filters, crush washers, o-rings, etc. replaced
  • Most visible hardware replaced with stainless steel, using copper anti-seize, and torques adjusted accordingly
  • Reused speedometer cable as it was in good order
  • Reused rear wheel even though the brake hub is at maximum diameter. (The price for a serviceable replacement was not worth expense, but I will grab the first one I find for a reasonable price)

In all, this was about two years of spare time. Much of that was due to this being my first project like this. I also had a six-month side quest designing, acquiring parts, then abandoning an effort to build my own lift before buying the Handy Lift I have now. That’s something like 600-800 hours in all. As for budget, you now how that goes. I’ll share that I overshot my original budget by about 60% and this bike will never sell for what it has cost. That’s alright, since I don’t think I could ever bring myself to let it go. Red is now a part of the family and I could not be happier with the result. I may still add engine bars and driving lights and am also undecided on the luggage which I still have as well. There is also a possibility of adding the oil pan extension from Siebenrock to help a little with cooling, but that is something I am monitoring. Otherwise, it is a complete project.

I am presently about 250 miles into the new break-in period and have not run into any major issues other than needing to revisit the carb rebuild.

9/3/2024 Edit: Here is a bit of a walk around video:

And a POV ride:


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