Rebuilding 2 BMW Engines R100 VS K100 | Which One Would You Choose?

In this video the rebuild of two classic BMW engines and gearbox, a low mileage 1982 BMW R100RS and a 1985 BMW K100RT. Please subscribe to follow these two builds!
Land on the Golden Gate by Chris Zabriskie is licensed under a Creative Commons Attribution 4.0 license.
creativecommons.org/licenses/...
Source: chriszabriskie.com/stuntisland/
Artist: chriszabriskie.com/

[@smeet87]

Prachtig!! Genot om de video en het vakwerk te bekijken!

[@corner.custom]

Kijk mooi om te horen 😁👍🏼👍🏼

[@kz6fittycent]

Twin - I love 4 bangers but twins are just such a nice experience when riding.

[@corner.custom]

I have to agree to that. Just love the torque at low rpm, makes it so much for exiting corners!

[@cinebenjamin]

Just picked up a k1100 that has sat for 10 years. Can't wait to get started on it. Love watching rebuild on it, such a beautiful engine.

[@corner.custom]

Thanks for the kind words. Nice bike for a build, a K11! I would recommend you given that the engine has been standing still for a long time to replace all rubbers and gaskets. Chances are very real that they have dried out and or will crack if they will not be replaced

[@carlcarsboult255]

I too have the very same and appreciate that tip thanks

[@83226505]

The K. But only just. You did a great job.

[@corner.custom]

Thanks man! To be honest I like the looks and riding characteristics of the R more

[@slim8440]

Beautiful job!👏👏👏

[@corner.custom]

Thank you 🤟🏼

[@zardportugal]

Fantastic job. Cheers.

[@corner.custom]

Thanks man👍🏼👍🏼

[@dsilva70]

Unique video. Great craftmanship. Thanks for sharing. Difficult choice. I own both engines on K1100LT ‘96 and R1200GS LC ‘19. I’d like the Boxer engine a tiny bit more because of it’s uniqueness and character especially at low revs.

[@corner.custom]

You've couldn't have said it better and I agree 100% to that! Love the torque at low rpm

[@devincalhoun3792]

Absolutely LOVE the rebuild you did on both of these motors, and I love both of them. BUT, if I had to choose I would go with the R100 because I just love the boxer motors. Also, I ride a 2013 Moto Guzzi v7 Racer so I just love those cylinder heads that stick out and say HI!

[@corner.custom]

Thanks man👍🏼 I also go for the boxer, love the drive ability of the bikes. High torque at low rpm makes cornering so much fun!

[@ahmedalmemari8341]

Very difficult choice, I love both of them, each one has its unique sound and ride 🙏🏻

[@corner.custom]

They sure do! To be honest I like the R engine better, but that's also because of the riding position compared to the K bike

[@mrkang4080]

R all day -- it's so unique.

[@pjpankras]

Amazing! I love both, but since I'm a bit olskool I pick the R100. Just love the look of the engine. Hope to own one someday.

[@corner.custom]

I fell in love with the R engine, especially when the bike lost a significant amount of weight with stripping down the fairing etc. The airheads are getting pretty hard to come by these days, especially for a decent price.

[@OscarJaramilloJr]

Amazing!!!

[@corner.custom]

Thanks👊🏼👍🏼

[@carlcarsboult255]

Beautiful work 👍 I have both but I have to say it’s R’s that have the edge 😁

[@corner.custom]

I agree buddy! Both builds are now ready, videos of those are on my channel as well

[@curtrn]

I could not afford the Older style air cooled in condition I wanted , so the K100 was all I could afford. I was very happy to find a excellent example of a 1985 K100 RT for $2000. It looks more modern, sporty, powerful and affordable. My heart is the old school air cooled motor , but 1985 is old school by todays standard. If I could afford both that's what I would do, but money and garage space only allows one. The K100 was more practical for me. BMW's are such a great value bike for the money it's truly hard to go wrong. It' s kind of like the model T vs a 1968 Mustang . I can tell you as people age the marks change. K bikes are becoming the modern classic bikes. Once it was the model T now it's the 68 Mustang and even those folks are passing on and a new classic will arise. The K bikes will have there day and it coming soon.

[@corner.custom]

The R bikes sure are more expensive than a K bike. But I have to say the K's are also nice cruisers 😎

[@Bornamortezaei]

@@corner.custom why the "R" series are more expensive than "K" ?

[@Bornamortezaei]

@@corner.custom I would like to buy a K100 tomorrow with 77000 km 1988. cafe racer . is this good choice for beginners ? This is very beautiful motorcycle that I have seen in my life.

[@corner.custom]

Just a matter of supply and demand

[@corner.custom]

@@Bornamortezaei It's a easy bike to work with. There's a whole playlist of my latest K100 on my channel, check it out

[@NicoMoto]

This a very nice work. I can't do a cleaner job !

[@corner.custom]

Thank you 🙌🏼👍🏼

[@lex1945]

Great work! Bothengines look brand new! But as an R1150RT oilhead rider, i'd still go for the boxer..

[@corner.custom]

I feel you man, I like the low rpm torque of a boxer more than the high rpm power of the K

[@bobsharonlong75]

I am reminded of the answer to the question "What is the best bourbon?" The best one is the one you have in your hand! Get at least one of each! I am currently touring with the 100's little brother, the R80RT. However, I did the IBA 50CC on a K100. Jacksonville Beach to Ensenada in 40 hours and picked up the Bun Burner Gold (1500+ in less than 24) along the way. The K's are as smooth as a sewing machine! I am actually searching for a K75 and an airhead GS at the present time.

[@corner.custom]

Couldn't have said it better. Both really have their own carastitics and have totally different way of riding. But TBH I prefer the torque and lighter overall weight of an R, makes the ride a lot more fun. Good luck on the hunt for good candidates!

[@whatsitwhosit]

Appreciate your attention to detail, and your clean work area/presentations....Did you ever announce which engine you'd prefer?

[@corner.custom]

Thanks buddy. To be honest I like the R engine more. Love the torque at low RPM, looks and sound 👌🏼

[@g.b.7990]

Amazing job once again. Love reading the comments to figuring out what you use during your builds. Small question, where do you purchase al these new rubbers, seals, spare parts etc?

[@corner.custom]

Thanks man 👍🏼 I buy them all at www.hobbyist.nl

[@moto_dras]

Both iconic engines so tough to choose! The R100 is probably prettier but i really like the brutalist look of the K100

[@corner.custom]

They both have their strong points indeed!

[@ferminaa2282]

Amazing job!!!! I prefer the K motor. I'm a pride owner of a bmw k1100lt in SpKind Regards.

[@corner.custom]

Thank you buddy 👊🏼👍🏼

[@ou7shined972]

The brick goes like stink in comparison... but the airhead is so more pretty to look at and easier to work on. My mate built a street scrambler K which I'm very fond of but I have restored a couple of Rs so my loyalties are with them. Btw I'm pinching your spinny cleaning brush idea :)

[@corner.custom]

I feel you buddy, I'm more towards the R's as well. Love working on them, so easy to work with. Brush works like a treat, rinse with gas after and it's a easy clean 👌🏼

[@andrewhayes4246]

I would choose the K because I have a fresh R. I had all of the R's & K's back in the day, I wish I had them all now!

[@corner.custom]

Today that would we a very very nice and pricey collection!

[@plunder1956]

Utterly lovely finish, how about a view of the finished bikes? I'm still keen on R series bikes, but the brick is more modern & has great longivity with more modern suspension & electrics. It's a very tough decision. I did try a modern R1150R at one time, a really lovely engine & gearbox that handled nicely for me. Decades ago I nearly bought an R80RT. I'm really a Boxer engine guy.

[@corner.custom]

Thanks man. There are loads of videos of these bikes finished on my channel. The K engine/bike got a red tank and the R got a blue tank. When you liked this video, you'll most definitely love those videos as well. I'm currently working on a new build, a K1200

[@KarpuzZx]

Hey there, neat job, very pretty! What paint did you use on k100 engine and covers?

[@corner.custom]

Thanks 👊🏼👍🏼Paint is called Selamix DTM, direct to metal

[@michaelhunley354]

@@corner.custom what gloss level did you use?

[@MwenjeNgambi-hp7nw]

all good

[@corner.custom]

🤟🏼👍🏼

[@joostbankras2688]

Wow, what parts did you all replace for the k100? I see all bearings but has to be replaced if you rebuild the engine? I have on too and am looking at rebuilding it but I don’t know exactly what needs to be replaced, do you maybe have a list?

[@corner.custom]

I've replaced almost everything. The engine had not yet run a lot of km, but wants to prepare the engine for the coming years. When you do take everything apart, it is a small effort to tackle everything right away. There is a chance that if you leave something untouched, it will leak or tear later on. Then you have even more work to do than tackle it right at the beginning

[@joostbankras2688]

@@corner.custom can u tell me where you bought the parts?

[@corner.custom]

@@joostbankras2688 www.hobbyist.nl

[@lewistaylor1965]

What is the risk starting the R100 after it had been still for a few years?...I've had a couple R100's been still and I start them ok...Check oil, plugs, fresh fuel or anything obvious, charge battery, try start... Thanks for any info....Thanks for the vid

[@corner.custom]

Didn't knew if the timing was right or if the cilinders and or pistons where in good condition. I wanted to rebuild the engine regardless so there was no point of trying it and risk damaging parts

[@Napalmdog]

Question; As you had the bike on a lift, was there any particular reason you didn't use it to not have to squat? It's not a criticism, I'm just wondering what the reason was.

[@corner.custom]

Because I was building two engines at the same time I didn't had enough space to lay out all the engine parts and keep them separated from the R/K. At that time I also didn't had a bike which needed to be on the lift so I used it as a second working bench

[@ulfdanielsen6009]

Simple: Custom re-built R100RS Café-Sportsscrambler for my son. Custom re-built K100RT Café-Cruiserscrambler for me. Bob´s your uncle!

[@corner.custom]

They'll both be for sale 😉👍🏼

[@hsyn1190]

Hi Should I plug the excess fuel drain at the bottom of the bmw r80 fuel tank?

[@corner.custom]

No it's better to use it by putting a small hose on it, just like it is from factory

[@nicololosi5261]

Poetry❤

[@corner.custom]

Thanks 👏🏻

[@narcissistinjurygiver2932]

who makes the clutches for these engines? I would imagine that they have to cross reference to a few cars out there. insteadd of buying from bmw

[@corner.custom]

The clutch packes are made by Sachs. The prices aren't that bad tbh 👍🏼

[@pieterbrepoels6563]

Welk product gebruik je om de motor te reinigen?

[@corner.custom]

Hoofdzakelijk benzine icm een kwast in de boormachine. 2e video van de R100RS laat dat wel zien 👍🏼

[@stefanweb316]

Is the paint blocking an efficient cooling of the engine ?

[@corner.custom]

Don't you worry about that. The K100 gets all the cooling that it needs via the radiator and fan and for the R100, there's only Cerakote on the heads and cilinders, so no paint/issues right there.

[@stefanweb316]

@@corner.custom Thanks for the reply !

[@matshallgren261]

I pick the K-engine. The K100 and K75 are the most reliable engines BMW have ever made

[@corner.custom]

They sure are bulletproof. Seen some K bikes with insane high mileage!

[@45helico]

WoW, i prefer twin.

[@corner.custom]

Same here man!

[@davidmanchester2182]

Why choose! Get one of each 👍🏻

[@corner.custom]

Couldn't agree more!!!

[@carlcarsboult255]

Yes that’s what I’ve done 😁

[@pieterbrepoels6563]

Ik heb beide motoren een K100 8V en een R100/7 boxer elk heeft zijn eigen karakter

[@corner.custom]

Klopt helemaal. Toch vind ik de R leuker rijden, meer beleving. Koppel bij lage toeren maakt het bochtenwerk leuk💪🏼

[@krisowler367]

The Peugeot 205 please. 👍

[@corner.custom]

Where did you spot a 205?

[@krisowler367]

@@corner.custom The K100 engine is a peugeot 205 engine.

[@corner.custom]

@krisowler367 Do you have any source for that? Sounds plausible

[@krisowler367]

@@corner.custom yes will find the video for you.

[@krisowler367]

104 not 205.. BMW needed to develop a clean-burning four-cylinder engine quickly. While a flat-four engine would have been suited to their boxer tradition and experience, it would also give the appearance that they were copying Honda's GL1000 Gold Wing.[6] In 1977, Josef Fritzenwenger presented a prototype using a PSA-Renault X-Type engine from a Peugeot 104.[7] The engine, which was installed in the 104 at a 72° angle, was laid flat in the frame with the crankshaft on the right, running parallel to the centre line of the frame.[5] This layout, for which BMW submitted a patent application, was well suited to BMW's traditional shaft drive, needing only one 90° bevel drive to transmit power to the rear wheel. Using shaft drive with the near-vertical transverse engine WIKIPEDIA BMW K100

[@KapteeniMahtava]

I have R100 scrambler and K1. Boxer is much more fun to drive because low torque..

[@corner.custom]

I fully agree to this buddy!!!

[@pavloslepeniotis9265]

airhead 100% excellent job

[@corner.custom]

Thanks man 👍🏼

[@braiden9999]

Volume?????

[@corner.custom]

Say what?