Episode 5: BMW K100 Cleaning & Prepping for Paint

In episode 5 I clean 30 years of road grime off of the engine, test the new ultrasonic parts cleaner, prep the tank and engine covers for paint, and front end parts arrive.

[@matthewmarkert]

Unbelievable, dude. I just binged all 5 episodes back - to - front. I'm in Santa Cruz working on a K75, at this point I'm so humbled by your efforts I can barely bring myself to bother with mine since I know it's going to fall so short. Your design and production are amazing! Had a rough day when I found out this morning the oil/water pump seal has blown and now my daily driver is on borrowed time. Your ASMR style video was really cool calming; kudos.

[@CURV-LAB]

Thanks. hahah don't get discouraged. I'm just figuring it out as I go too, dude!

[@nunofosilva]

I want to buy a K100 for years, but the lack of space to store it and time to ride is stopping me to do it. Your videos are a motivation to finally gain some courage and get one either way.

[@CURV-LAB]

Nuno Silva do it!

[@Fox1486]

Just finished my K100 build two weekends ago. Take your time and have fun with it. I sure learned a lot. Did the same as you on the engine cleaning. Kept everything together, and hung it from a engine hoist. Used engine degreaser, brushed and wiped down, then soda blasted the casing, then blew off with air compressor, used wax and grease remover (pre paint solvent), high temp engine primer (Duplicolor), high temp engine enamel (low gloss black Duplicolor).

[@Infektedcustomz]

Awesome job man! Tip for getting emblems off in the future. Apply heat with a heat gun and then use fishing string or floss to get behind and saw back an forth to cut through the softened adhesive. Once removed, soak it with goo gone and use more heat to remove the remaining adhesive. Works like a charm every time without damaging paint or emblems.

[@CURV-LAB]

Infektedcustomz ah thanks. good to know

[@paulwilliams4031]

you should have put the cleaner in the bags and just have water in the ul-cleaner .save's on cleaning up just new bags

[@rafaelmora8219]

Nice job men, carefully and so detailed! I may recommend a heat gun to remove sticked emblems and protections, it helps a lot. Thanks for sharing your project.

[@4maxmustermann]

awesome quality! really enjoying this series

[@tesbz]

great content buddy looking forward for your next episode

[@CURV-LAB]

Thanks, next one should be a good one.

[@ZoranZafirov]

Keep pumping them out man , amazing content

[@CURV-LAB]

Thank you!

[@The9meister]

Josh, a tip, if you have air compressor, get a small sand blasting gun and fill it with baking soda, gets all those tight areas super clean. Good video.

[@SLfamily1]

I love everthing u do. God Bless ur Soul bro. From nerway

[@drewbase]

Not only the outside, but also the inside of the engine needs some TLC after years of duty. I would have taken it apart and send it to a place where they can revise it. Not that much work from where your at, and it doesn’t have to cost that much. Also saves having to clean most parts in this video and makes the bike really stand the test of time. For the rest: Awesome project!! Love from the Netherlands.

[@ralphkring2365]

Can’t wait for the next episode. 🤙

[@COOLCABMAN]

Loved the episode.. Thank you

[@joebloggs1317]

newby design I've rebuilt/restored several bikes and tbh cleaning up old bolts is great until you start putting the bike back together, your immaculate valve cover etc will show them up for what they are, cleaned up old bolts. I found a local metal finishing company, took a bucket load of old fasteners and they bright zinc plated them without breaking the bank. Word of warning, if you take wheel spindles etc tell them to mask the shank or they will be oversize for the bearings. A gallon of brush on degreaser (I use 'no nonsense') goes a dam sight further than aerosol and can be applied using an atomiser ( get water soluble) I'm building something based on the K100RS and have a nice idea to replace the top yoke bolt, I'm going with a conventional brake hose set up rather than the dumb idea BMW had by routing the hose through the steering stem. Next time you find yourself in the shed/garage/workshop would you mind measuring your bolt, just to be sure we're on the same wavelength its the bolt at 4:24 in episode 2 of your brake down video. I need the thread length under the head. I know I have one on my bike but I need the bike mobile to get it to the engineers so would sooner not disturb the brake system if I don't need to. Thanks and good luck with your build

[@CURV-LAB]

Hey Joe, I know what you mean. I just got the tank back from the painter and it looks like a concours quality paint job so I'm reevaluating the level of finish I want for everything else. Thanks for the electroplating tip, I'll look into that. Ideally I'd just replace all the hardware with OEM nuts and bolts but those have been hard to track down so far. Are you talking about the head tube bolt that goes up through the lower triple, through the head tube, then through the upper triple? The internal threading is 10mm in length. External threads on that bolt are 10mm as well.

[@CURV-LAB]

drive.google.com/open?id=1sa4hK1szsWLRpcHC7FQM8VnvbEfejvzS

[@joebloggs1317]

@@CURV-LAB OEM's going to be tough simply due to the age of our bikes, most nuts and bolts can be swjapped for stainless etc but the obscure ones (odd length shank etc) will be difficult as you said and this is where the plaiter comes in handy. Regarding the top bolt I think I need to pull mine apart and measure it, I have been given several different lengths and I think some bikes came with a different set up from the factory. BMW liked to make things complicated. Good luck with your build bud

[@benjivanderpol3466]

Great video

[@LouCFur90]

Carb cleaner works well in the ultrasonic cleaners. It's easier on rubber, plastic and aluminum as well.

[@CURV-LAB]

Thanks, good to know.

[@The9meister]

Zen, and the ' Art of motorcycle maintenance ".

[@The9meister]

Josh, to get glued parts off, heat with a heat gun to soften glue, comes off easier, we live and learn.

[@oilinmyblood3906]

That sucks your Ultrasonic Cleaner broke on you brother I actually have the same exact one that I picked up for $60 and it works great bummer yours crapped out on you, and if you do this kind of work on a regular basis than yes you cannot live without that ultrasonic cleaner, you got to have one

[@borntobewild846]

Wow, love the gas cap. Where did you find it. Very cool.

[@911Shac]

good stuff. makes me so sad that I just sold my BMW K1100LT in turquoise. Had an oil leak and alternator issue. Sadly the oil leak was out of my capacity to sort. Enjoyed the vid though!

[@joedeleon3435]

Good decision with the ultrasonic cleaner brother, that sucks your's broke because I have the same one but it is just a little bit bigger at 10 liters and mine works great, what a bummer your's broke after just 20 minutes!

[@OsamaSalem]

Hot air gun man for the tank decal

[@daltoncooks]

awesome. been looking at a k75 to start a build. Use a heat gun for the sticky stuff next time lol.

[@az-cafe-moto]

Looking good. Where did you get the gas cap from?

[@kazimierasmazonas946]

thanks for posting the content, its really helpful now that I started to tear up my bike!

[@sportsgin3484]

Nice videos. What a fork and fork bridge you got, they look really good. Do you have to adjust them or do they fit perfectly from the start

[@S09Engineering]

I've had good luck with the ultrasonic cleaner from Harbor Freight. I just with it was bigger.

[@hombre3000]

Bummer about the ultrasonic cleaner! Btw - I bought the same bluing liquid recently!! Everything is looking great.

[@alexbarrios890]

hombre3000 hows it holding?

[@elbasanelezaj6084]

Hi! I appreciate your job! Can you give me a link for the filler cap?

[@NicoMoto]

Hey. Nice job ! Do you have parts models of your front suspension?

[@benjalyd]

Dude. Cleaning 30 year old crap of aluminium = WD40 and green Scotchbrite. Finish off with brakecleaner and a rag :)

[@sinkaaba-mark8635]

Tank lock looks amazing, can you Tell me pls where did you bought?

[@Blackheart_114]

I’m looking at a 1985 k100 or a 1986 k100. I have no idea what I’m looking for, but I’d love your input and help please ! Phenomenal videos bruv 🤙🏼

[@goncalohubert]

Good Job. where did you buy de black gasoline cover on top of the tank?

[@hanspeter80]

Hey dude! where do you got that tank cover? i need that one too

[@TheJeanZamora]

What model year did those R1 forks come off from? I saw that the CnC’ed wheel are marketed for 2015-2017 R1. I was wondering if they would fit on 2018 R1 forks

[@DAVIDTORRESANI]

Where did you get the BMW logo for the tank? Mine is wearing out bad. Mines a old bmw logo has yellow

[@nikitalitvinenko6129]

Dear master, please tell me, did you make the gas tank cover yourself? Or bought somewhere?

[@maartzusjes5293]

Hey Newby When is the next coming?

[@alanolivier9461]

where did you buy the tank cap of your bmw k100 ? Please

[@antoniorubio782]

Hi Josh I just got a k100 myself. I never did anything like this before. My question is, are there any risks for a newbie like me to remove the valve cover? Or is it just like removing fairing?

[@Klankermeier1]

Wow such a nice video! I will also document my build. Can I get somewhere my hands on your CAD Data :D

[@CURV-LAB]

Thanks! Working on a way to make my frame CAD available to folks. I can't share subframe or suspension CAD since I don't own the rights to those parts. I'll keep you posted

[@CURV-LAB]

CAD available here if you're interested. www.turbosquid.com/FullPreview/Index.cfm/ID/1495389

[@sinkaaba-mark8635]

Where did you buy the things in this video?

[@COOLCABMAN]

The engine parts look like.. Originally they were sandblasted? Is it.?

[@jjmcoupebmw6557]

sandblasting...low setting would have saved you hours and hours on scrubbing. Nice job on the bike!

[@tourrelbrian7123]

Bonjour ou à tu acheter le bouchon du réservoir ? Merci

[@HakujinTrue]

Варвары)

[@FunWithAJ]

Are you in OC? If so I am as well. If you ever need another set of hands or want to Colab let me know, happy to meet up.

[@CURV-LAB]

Nope, in San Francisco. Appreciate the offer. Let me know if you're ever in the Bay.

[@user-qz1bi8ob1v]

10:09 😬

[@jumar360]

Flying brick, yeah I'd say.

[@StraightLineCycles]

Enter in my super clean giveaway, stuff is incredible

[@marcopauletto9628]

La prossima volta prova ad usare un pulitore a vapore per pulire il grasso.