Very informative my 79 R100 hits a false neutral between 4 and 3rd going down shift any thoughts does it mainly when hot

Thanks so much for the wonderful detailed videos. I'm referring to them for my R75 restoration along the way!

I have my engine rebuild at this exact place. Happy to learn that right now is a good time to install the engine into the frame. Thank you

Can the original BMW voltmeters be adjusted? I noticed on my 84 R100RS that the BMW voltmeter shows 0.5 - 0.7 volts below what I measure across the battery terminals with a good Fluke voltmeter.

Thanks again for making this video. Whenever I need advice you are the man I come to.

Thank you. You've helped me out many times.

2 weer

Thank you for all the very useful videos here. I had low oil pressure when engine warm at idle, but actually there was oil pressure. I replaced the conrod bearings to new ones, checked the gaps, both were fine. After I mounted the engine and rotated by the starter motor the pressure gauge did not show pressure. The oil also did not come out from the rockers. I tried to top up the lubricating system through the oil pressure switch hole but nothing happened. Since I had no better idea I dismouted the engine I had the main bearings replaced and sleeved-in the oil filter housing, then machined on the proper sizes for the brand new rotors. These tasks were made by a famous german airhead specialist workshop. I checked all the dimensions after I got back the engine, all were good, so I assembled the engine. All gaskets are new, everything looks good. But the situation is the same: no oil pressure when cranking. I also replaced the spring and the piston of the pressure valve to original new ones. Would you have any idea what can be wrong? thanks in advance

Great father/son tradition, riding and wrenching together. I have a 1979 R65. Love the bike but performance was an issue so I put the Siebenrock 866 kit, a taller 5th gear and Mikuni carbs and it really goes like heck.

Rather late to this party but I have to add my congrats; exemplary restoration. A couple of questions, if I may, as I have a 1978 model of the same machine. Having once replaced the pitted fork tubes, I decided to fit gaiters, as you have. Unfortunately the gaiter or its clamp has fretted the fork apertures in the fairing, however I positioned the top clamp. Have you found the same, or, if not, how did you avoid it? Next, do you find the twin spark head gives a noticeable improvement over standard, esp given today's lower octane fuels and the advent of 5% or even 10% ethanol (here in EU)?

Hvala pozdrav iz Hrvatske .

Amazing. Best explanation of entire system i've seen yet. Thank you

THANK YOU!!!!!!!!!!!!!!!!! :)

THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!! :)

Great Videos! You think this will work with a smaller 6 to Press?

So many thanks for your time and knowledge that you gift us old BMW nuts with. I live in South Africa have 9 bikes( BMW r100rs 1983 two BMW r1200gs , one Yamaha xt660z, two Suzuki dl650 vstroms, my touring bikes, and two drz Suzuki 400 one an e the other an sm. in the last year I had two BMW 1200 gs one an 06 the other an 010. That dropped the right hand exhaust valves. Both belonged to friends. The one I purchased as my friend is a crazy man and rode the bike like a super bike so I expected it to be unfixable without a used engine. The other not so bad. Also please understand that I am not a professional mechanic nor a BMW lover, way to complex and unreliable for modern BMW bikes. I am an ex Suzuki dealer from Allentown Pa Allentown Suzuki dealer 1514. We specialised in Suzuki, maico (largest dealer east of the missipi) Ktm, montesa and husqvarna. I have from my past tons of experience ps I never charge my friends for my work. To attempt to simplify my narrative I was able to repair both bikes, if you are interested in the details will be glad to share, a horrible complex rebuild. All done with used parts and now have4,000 kilos on my 06 and runs like a clock, however four months ago rode to Cape Town with an American friend that came here we used both of my 650 vstroms round trip Tzaneen Cape Town and return, four thousand kilos without issue. Recently purchased a 1983 r100rs in six boxes and neglected for ten years. The bike as stored in joburg, no salt no crazy temp variations therefore almost no rust. Bike now running and And a dream. To me almost as easy to repair as a bycycle with a headlight. The clutch slips and the fairing forces my knees between the tank and fairing. Everything is fixable, if not electronic. Sorry for the endless talk. Cheers Pepe limantour

Excellent job

Why not take advantage of everything being open to also change the connecting rod bearings. So cheap and easy. Wonder why Siebenrock does not propose them together with the kit. I had to request them separately for mine.

Ich fahre eine R80 ST und habe dort auch die Siebenbrock 100 eingebaut. Die BMW ist so unfassbar simpel. Das ist es ja gerade was das Schrauben so schön macht. Ihr erklärt das wirklich sehr anschaulich und gut. Sodass sich auch die jüngeren da ran trauen. Meine habe ich dank euren Kanal komplett überholt. Endantrieb, Getriebe, Gabeln Speichen. Ja auch den Bosch Hallgeber. Also alles bis auf die Kurbelwelle und Pleuel war auseinander. Ich musste in den 42 Jahren noch nie in die Werkstatt. Vielen Dank für euren Kanal. 😊

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Great video, love that home-made manometer. Useful idea to build your own spark plug extender, I was shopping around for those with no luck.

Brook, I study your videos several times prior to doing any work on my bike. Truly grateful for the videos. What steps do you take to polish the chrome tubes? I'm ready to put things back together but I have sharpie marks and some other junk to get off.

Hi Brook,can the red assembly oil be used in all the pre lube locations where you used motor oil?

Just writing a note for myself: Oil pan bolts - 78 inch pounds

Your videos have been very helpful in preparing me to confidently inspect and ride back to New Mexico a one-owner 1984 R100RT from Wisconsin on Friday. But I have one question: We seem to be similar height (I'm 6'2-1/2"), and my bike apparently has a slightly taller windscreen. Have you experienced any buffeting at 75~80 mph? If so, did a given angle adjustment help? I ask because I'll be taking the interstate over the weekend due to the need to get back promptly.

My R75/6 was running perfectly, first start up in seven years- then my colleague touches the left side controls with the lights and now it's dead as ever- nothing happens when I turn the key. I guess I must start from the end

Brook, how did you determine the fork fluid amount?

Hi, thank you, very helpful! Would you mind sharing the EXCEL spreadsheet that you designed for this?

When talking about the back edge of the razor "popping up off of the case", mine is off the case a little bit all the way around while resting my blade on the center part with the bolt holes. I tightened my bolts all the way down with the installer tool and I don't think I should try to tighten them any more. Is it normal that there will be a little gap, as long as the gap is uniform?

Dont forget that the collars at the base of the new tubes are able to be tapped up or down so i always tap the collar up the tube then when you fit the cylinder with the new pushrod seal just tap the collar back down to re seat the collar to the seal. The haynes manual gives dimensions to make the seating tool so easily done

75 foot pounds is approx 100 Nm. For those of us in the S.I. world.

Incredible detail. Much appreciated.

I lucked out when I found this video. It’s interesting how long a wire becomes when it’s correctly routed. Thanks for posting.

Wow 👍

Mine had 6 spacer washers on the back of the things that the locating pins go into. Be careful not to lose those! Also, I braced the front cover with a m6 bolt as shown, but my crank still rotated when I used the impact driver to loosen the bolts. Am I correct that it is ok if the crank spins, but we are trying to prevent it from moving back and forth?

I have the same one! Even the color is identical. However, mine still have original painting and looks only slightly worse than yours after the rebuild. My ST stood unused for over 20 years in a German garage. Zero rust. After basic adjustments it runs smoothly, although it would be nice to replace the old dried grease in several places. Thanks to the informations on your YT channel, I will do it. Greetings from Poland. Stay healthy!

Sorry its a bit late to make a comment but i just wanted to know if there is a correct time for the oil pressure to drop when the motor is turned off . I think it woold maybe termed oil pressure decay time. Without a gauge it would be the time taken for the oil pressure light to come on when the ignition is turned off . I realise that it would be quicker whe the oil is hot . Thanks

Thanks,im amazed that there are only those 2 bolts and no upper mounting

Buenas tardes, soy un seguidor tuyo y necesito un favor . Me podría mandar el vídeo de la instalación electrónica. Estoy restaurando una BMW R75/6, y no encuentro mi grabación. Muchas gracias

Then you change from 750 to 1000 ccm. it is necessary to replace carburetor nozzles to some larger ones.

What did you use to cut down the 27mm socket?

Thanks for this really good explanation

Well done. Thanks again from Richmond Virginia.

Shafts and sprockets are keyed, so the alignment should be correct no matter what.

Is that special tool required to push the timing cover on or could you just turn the engine so the timing components are facing up and then push really hard from above? Then when you put in the bolts won't it seat correctly? That tool is just really expensive from cycleworks so I'm trying to figure out if it is required.

Hi Brook, Thanks for the great videos! I didn't take precautions and my connecting rod fell and left a small dent in the case. What can I do about it?

Does anyone know the bearing manufacturer and part number?

Great video. Thank you. It gave me the confidence to begin this much needed project on my 84 R100RS. It sounds like you submerged the entire carb body into the can of carb cleaner? No concerns about that damaging the plastic "plaque" on the carb body? Thanks! -mark

G'day Brook. At 1:10 you describe the 13mm socket fitting "just fine" on the left retaining nut. On my 11/81 RS the rear of that space has a tall lip, unlike the other side. I can fit a 13mm socket onto the nut but not the ratchet onto the socket... no space and the angled attachment doesn't quite do it either. Don't know if you've encountered that of course but do you have a solution? I'm wondering if I should remove/reduce that lip...just enough to get a grip and avoid rounding off the nut. Cheers edit: a smaller socket and ratchet set 1/4” drive fit with the lip and worked.

Can you provide me a diagrammatic video of this explanation pls. That will be very helpful as am using this very engine specification to fly my home made helicopter still under construction. Pls. Help me. Tks.