Download your copy of this episode to view anytime and anywhere. We now have Downloads of each episode and the entire series available through our website for a VERY small price! Why pay for a download? Not only does this help ensure you will always have access to this video but it also supports our video team with proceeds for video equipment maintenance and new production gear to help us create additional 2 Valve focused videos. Find the Digital Downloads and Parts Used in this video here: www.boxer2valve.com/1981-on-mechanical-episode-01-1985-tear-down.html
I enjoy your videos, maybe the best part is the fact that you cover the processes in detail and slowly. Indeed slowly is a speed of your work I so enjoy. Keep it going and we all learn something.
This is so well done, just picked up a 70 r60/5 and it's refreshing to see how similar the bikes are. This will be such a valuable resource for my project.
Thanks William! I have restored several bikes, but just last year bought a last edition CS (first last edition '84). While I am sure I could figure a lot of this out, having your tips and tricks at hand in a convenient video is saving me load of time. I appreciate you taking the time to pass on this information! Keep up the good work!
Thanks William, we have also many BMW R carburateur to transform or restore and you explain so well we get some of your special trikes to do it easier Thank again to share this details
Buenas desde Barcelona Spain Gracias a tus vidios y que no te guardas los secretos y tu buen saber. Ya he restaurado varias BMW . Ahora estoy haciendo una BMW R 80 GS BASIC Muchas gracias Joan Melero
¡Hola desde las colinas del oeste de Carolina del Norte! ¡La motocicleta de mis sueños es una R80 Basic! Lamentablemente, nunca se vendieron en los Estados Unidos. ¡Felicitaciones y disfruta de tu fantástica motocicleta!
Danish thanks for your fine videos. Do all 1981-84 gearboxes have a clutch-rod with a bearing and a round disk at the rear end, as shown in this video? on my 1982 (possibly 1983) gearbox there was no disk, only a straight rod that fits into a closed unit with bearings inside. No matter how I adjust the screw on the clutch arm behind the gearbox, my clutch won't disengage completely, so I wonder if lack of disk + bearing would explain that (because the rod cannot be pushed enough forward). I am thinking of putting in a washer between the rod and the bearing unit, but that doesn't sound right either .. ugh
Hi William. My name is Ben. I hope all is well. I am concidering replacing my tires: 1983 R65. It calls for a 3.25×18 Metzeler Rille 12 for front. Is that the same tire as a Metzeler Block C 66 3.25×18? I can get both front, and rear Block C 66, in the U.S.A. Any advice is appreciated. Sincerely, Ben Ps. Very professional work. As neat as aviation mechanics
@@GarthGoldberg I agree that removal of transmission is the same but, lots of other differences between mono and twin shock and title is still not correct. I have an '81 and a' 93.
Good call! with only the exception of the swingarm and rear drive, not much changed and so we named it so to adrress a wider range of years, that others with 81-84 might benefit.
I'm having trouble getting the swingarm off because of the bolts that connect the rod to the engine. And that part is not in the clip haha. How do you untighten the 4 bolts since the entire rod tends to spin (obviously since that's how it works haha). Any tips?
Hi guys. Can someone tell me what the crossover fuel line is for? (new to airheads here). Mine was completely disconnected when I purchased my bike (1985 R80) and it was running fine without it being there... I don't understand it's use. Cheers
The really cool thing about having the cross over fuel line is that it basically gives you 2 "reserves". You can run one side of the tank almost dry by feeding both carbs with the cross over line and then when that is finished you still have the other side of the tank to go on reserve. Then you know you better get some fuel pretty soon.
The clutch lever boot is FORTY BUCKS so it is better IMO to loosen the clamp and remove the boot from the transmission cover first if it is still serviceable.
You are correct. More often than not, the boot has deteriorated and will need replacement. if you are very careful, maybe you can salvage it for another go.
It would not really fit I think. The issue starts with the timing cover and how it would not align with the starter cover. I don't think that the parts are compatible. Never really tried though so I will have a look. Thanks for the input!
Something is funny here - the title says that this is the first in a series on an ‘81 bike - but it is actually the continuation of the ‘85 R80RT >> S project. Anyhow, your tutorials are so well done William - BUT - could you please-please-please ask your camera person to focus in on where your hands are doing the actual work? When you were removing the rear brake pivot and the swing arm bolts - all we could see was an overall rear view of,the bike - but your hands were completely invisible (which means that that portion of the video had no value whatsoever).
Most all of the work that we did would be the same on an 1981 and later bike. That's why we named it so. I've had a serious talk with my cameraman and he promises to do better!
Download your copy of this episode to view anytime and anywhere.
We now have Downloads of each episode and the entire series available through our website for a VERY small price!
Why pay for a download? Not only does this help ensure you will always have access to this video but it also supports our video team with proceeds for video equipment maintenance and new production gear to help us create additional 2 Valve focused videos.
Find the Digital Downloads and Parts Used in this video here:
www.boxer2valve.com/1981-on-mechanical-episode-01-1985-tear-down.html
I am a software developer... but somehow I really enjoy watching William working 🙂. Thank you William!
Those videos are addictive, can't stop watching it.
Fantastic video. All your little tips on removing tough fasteners is excellent.
Had an R80 years ago. Would love to have another one in the future. This video series will be a great reference. Thanks!
I have a pair of overalls and when I wear them at work I gain all of this mans mannerisms and smile at customers the same way he smiles at us
Thoroughly enjoy all of your videos. Thank you for being so detailed!
I enjoy your videos, maybe the best part is the fact that you cover the processes in detail and slowly. Indeed slowly is a speed of your work I so enjoy. Keep it going and we all learn something.
Glad you like them!
Having these videos available, and the parts also, makes these BMW Airhead bikes more valuable in the long run.
Thanks. The value is in the enjoyment that you have!
Bravo, William of Boxer 2 Valve.
Thanks!
This is so well done, just picked up a 70 r60/5 and it's refreshing to see how similar the bikes are. This will be such a valuable resource for my project.
Thanks so much ! We appreciate you watching !
Merci William, pour cette leçon de mécanique. Cordialement
Vous êtes les bienvenus. Merci d'avoir regardé!
Another excellent teach-in with great explanations and demos - thank you, William 👍
Very welcome
Thanks William! I have restored several bikes, but just last year bought a last edition CS (first last edition '84). While I am sure I could figure a lot of this out, having your tips and tricks at hand in a convenient video is saving me load of time. I appreciate you taking the time to pass on this information! Keep up the good work!
Thanks for sharing!
Thank you William for another great video! I really appreciate all the hard work you do to show us how to do our own work and where to buy parts!
I appreciate that!
Thanks William, we have also many BMW R carburateur to transform or restore and you explain so well we get some of your special trikes to do it easier
Thank again to share this details
Glad to help
Great tutorial William. Thanks.
Glad it was helpful!
Great video this is a big help since I own the same 1985 R80 Thanks for taking the time to create this excellent content.
Glad to help
Really educational as always! Good job!
Glad you think so!
Buenas desde Barcelona Spain
Gracias a tus vidios y que no te guardas los secretos y tu buen saber.
Ya he restaurado varias BMW . Ahora estoy haciendo una BMW R 80 GS BASIC
Muchas gracias
Joan Melero
¡Hola desde las colinas del oeste de Carolina del Norte! ¡La motocicleta de mis sueños es una R80 Basic! Lamentablemente, nunca se vendieron en los Estados Unidos. ¡Felicitaciones y disfruta de tu fantástica motocicleta!
Very nice. Thanks from France.
Thank you too!
You’re doing an amazing job, keep up with the good work!
Thank you so much!
Danish thanks for your fine videos. Do all 1981-84 gearboxes have a clutch-rod with a bearing and a round disk at the rear end, as shown in this video? on my 1982 (possibly 1983) gearbox there was no disk, only a straight rod that fits into a closed unit with bearings inside. No matter how I adjust the screw on the clutch arm behind the gearbox, my clutch won't disengage completely, so I wonder if lack of disk + bearing would explain that (because the rod cannot be pushed enough forward). I am thinking of putting in a washer between the rod and the bearing unit, but that doesn't sound right either .. ugh
Great video!
Thanks for the visit
Hi William. My name is Ben. I hope all is well. I am concidering replacing my tires: 1983 R65. It calls for a 3.25×18 Metzeler Rille 12 for front. Is that the same tire as a Metzeler Block C 66 3.25×18? I can get both front, and rear Block C 66, in the U.S.A. Any advice is appreciated. Sincerely, Ben
Ps. Very professional work. As neat as aviation mechanics
Oh my fucking god PLEASE do the BMW R100 next!
Great video William, as usual, but not sure about the title ‘1981 on’. Was expecting a twin shock bike as monolevers didn’t come in till about 1986.
Transmission installation/removal is the same.
@@GarthGoldberg I agree that removal of transmission is the same but, lots of other differences between mono and twin shock and title is still not correct. I have an '81 and a' 93.
Good call! with only the exception of the swingarm and rear drive, not much changed and so we named it so to adrress a wider range of years, that others with 81-84 might benefit.
I'm not sure if you already covered it but any information on the electronic ignition for these Mono's the "bean can" seems to be a problem
I'm having trouble getting the swingarm off because of the bolts that connect the rod to the engine. And that part is not in the clip haha. How do you untighten the 4 bolts since the entire rod tends to spin (obviously since that's how it works haha). Any tips?
Hi guys. Can someone tell me what the crossover fuel line is for? (new to airheads here). Mine was completely disconnected when I purchased my bike (1985 R80) and it was running fine without it being there... I don't understand it's use.
Cheers
The really cool thing about having the cross over fuel line is that it basically gives you 2 "reserves". You can run one side of the tank almost dry by feeding both carbs with the cross over line and then when that is finished you still have the other side of the tank to go on reserve. Then you know you better get some fuel pretty soon.
The clutch lever boot is FORTY BUCKS so it is better IMO to loosen the clamp and remove the boot from the transmission cover first if it is still serviceable.
You are correct. More often than not, the boot has deteriorated and will need replacement. if you are very careful, maybe you can salvage it for another go.
Will the older style airbox fit on this engine? If so I hope you use one.
It's possible, but you have to change the crankcase breather, etc. Not worth the trouble since the later style actually breathes better.
It would not really fit I think. The issue starts with the timing cover and how it would not align with the starter cover. I don't think that the parts are compatible. Never really tried though so I will have a look. Thanks for the input!
What does all this cost?
It depends on what is needed and whether you do it yourself of you pay someone. Impossible to say.
Something is funny here - the title says that this is the first in a series on an ‘81 bike - but it is actually the continuation of the ‘85 R80RT >> S project.
Anyhow, your tutorials are so well done William - BUT - could you please-please-please ask your camera person to focus in on where your hands are doing the actual work?
When you were removing the rear brake pivot and the swing arm bolts - all we could see was an overall rear view of,the bike - but your hands were completely invisible (which means that that portion of the video had no value whatsoever).
Most all of the work that we did would be the same on an 1981 and later bike. That's why we named it so. I've had a serious talk with my cameraman and he promises to do better!
boxer2valve BMW Restoration and Parts Supplier Excellent - I’ve already noted an improvement!