If you like our site, please consider joining our club!
By joining you will help ensure that we can continue to provide this service
JOIN HERE!

1975 BMW R90S Restoration

The place to discuss the R 90 S as well as the R90S Worldnet archives!
Post Reply
User avatar
skychs
Posts: 586
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA
Been thanked: 1 time

Timing chain

Post by skychs »

Since the bike has 65K miles on it the first thing we noticed was a noisy timing chain. So .... after a call to Capital Cycle we started going into the front of the bike to replace the chain.

Overall everything looked pretty good. The chain was WNL but loose and needed to be changed. We also discovered the plug wires from the coils were not "crossed" to each cylinder. Both wires from each coil went to the same cylinder. Easy fix.

Going into an unknown engine the first time is kind of scary. So far so good.
Attachments
r90_timing_chain_044.jpg
r90_timing_chain_044.jpg (136.22 KiB) Viewed 11869 times
r90_timing_chain_036.jpg
r90_timing_chain_036.jpg (143.54 KiB) Viewed 11869 times
r90_timing_chain_028.jpg
r90_timing_chain_028.jpg (978.06 KiB) Viewed 11869 times
r90_timing_chain_026.jpg
r90_timing_chain_026.jpg (930.07 KiB) Viewed 11869 times
img_8426.jpg
img_8426.jpg (2.46 MiB) Viewed 11869 times
1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

User avatar
wa1nca
Posts: 1213
Joined: Thu Sep 27, 2012 5:15 pm
Location: Ashfield Ma
Has thanked: 6 times
Been thanked: 12 times

Great winter project

Post by wa1nca »

Enjoyed your last restoration on your r/60

Make sure you don't put any part upside down and that all the bolts are tight

Good luck with your new bike

Tommy

My new project
67 Sears Allstate 250
Puch made in Austria
Moto Giro fun ride
Attachments
dsc04313.jpg
dsc04313.jpg (2.12 MiB) Viewed 11869 times
dsc04305.jpg
dsc04305.jpg (2.69 MiB) Viewed 11869 times
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

User avatar
skychs
Posts: 586
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA
Been thanked: 1 time

restoration

Post by skychs »

Enjoyed your last restoration on your r/60

Make sure you don't put any part upside down and that all the bolts are tight

Good luck with your new bike

Tommy

Tommy ..... thanks for looking in. Restoring that R60/2 is what started all of this. Im addicted but its a lot of fun and I learn sooooo much in the process. I need a new hobby when I retire in 3 years. I think found it.

I promise I will check every bolt and direction on this build.
1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

User avatar
wa1nca
Posts: 1213
Joined: Thu Sep 27, 2012 5:15 pm
Location: Ashfield Ma
Has thanked: 6 times
Been thanked: 12 times

Im addicted

Post by wa1nca »

I know
This is my 5th bike
Not a BMW but it was my Dads and found it after 22 years storage

I thought I might be bored after retirement but now find I seem to create more and more projects
Wish I could posts more on this bike but this site is for BMW's
Tommy
Tommy Byrnes
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA

khittner
Posts: 369
Joined: Wed Feb 15, 2012 8:45 pm

I would paint, and not

Post by khittner »

I would paint, and not powdercoat, the frame. It's your bike, and your "rider", but paint, while more easily damaged, is correct and more easily repaired than powdercoating.
Konrad

User avatar
skychs
Posts: 586
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA
Been thanked: 1 time

paint

Post by skychs »

I would paint, and not powdercoat, the frame. It's your bike, and your "rider", but paint, while more easily damaged, is correct and more easily repaired than powdercoating.

I understand/respect your point about keeping it "correct" but its not going to be a show bike. Its going to be a rider. I painted the frame on my first total restoration (Honda CL350) and it looked great but its just not as durable as powder coating.

Can the average person really tell the difference looking at a restored bike if its frame is painted or powder coated?
1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

User avatar
Twocams
Posts: 781
Joined: Sun Mar 16, 2014 8:42 pm

The average person isnt going

Post by Twocams »

The average person isnt going to care if you painted or not. And frankly I wouldnt care if no one liked the powder coating. But im 68 now and dont give a ratsass what people think of a lot of stuff. If I like it or you like what you have done thats all that counts anyway. I think what other people think is over rated anyway. And all this thinking is hurting my brain now. IMHO


twocams
Twocams
92 R100RT/69 R69S
2004 Aprilia Atlantic 500cc single cylinder Scooter
83 Honda V65 Magna, fastest production bike in1983
2015 Can Am Spider SE6 1,688 miles
2018 Moto Guzzi V711 Special

User avatar
skychs
Posts: 586
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA
Been thanked: 1 time

Advice

Post by skychs »

The average person isnt going to care if you painted or not. And frankly I wouldnt care if no one liked the powder coating. But im 68 now and dont give a ratsass what people think of a lot of stuff. If I like it or you like what you have done thats all that counts anyway. I think what other people think is over rated anyway. And all this thinking is hurting my brain now. IMHO
twocams

That was great !!

I understand. There is a ton of crap to consider but I have to be open to "all" suggestions. Unfortunately the color scheme (Dayton Orange) and having the frame powder coated decisions have already been made.

When I posted my R60/2 rebuild I can't tell you have valuable the input was in determining what-when-where every nut and bolt went. Im looking for the same input here and Im open to any suggestion no matter how big or small. I could not do one of these restorations without the help from this group and others so I am very grateful.

Now my brain is hurting just thinking about all I have to do ...... :-)


1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

User avatar
skychs
Posts: 586
Joined: Fri Nov 25, 2016 2:12 pm
Location: Richmond VA
Been thanked: 1 time

1975 BMW R90S Restoration

Post by skychs »

Last month I finally picked up the bike of my dreams ... a 1975 R90S. It was a one owner bike purchased from the Mid West with 65K miles on it. As far as I can tell it's all original with a couple of upgrades to include an electronic ignition, dual plugs and several frame and front end modifications. It is rider and runs strong. It doesn't smoke. Everything appears to be fine.

My intention is to take the bike apart, go through it as much as I can then restore it. This is going to be a rider not a show bike so I want it to perform as well as look original. The plan is to change it from Silver/Grey to Daytona Orange.

So, this blog is to document what I do to the bike step by step. Im open for suggestions as well as criticism on anything/everything Im doing. Some will say leave it alone and ride it. I understand but if Im going to ride this bike I want to know everything is up to date and safe. If Im going to take it completely apart why not powder coat the frame, take care of some of the rust and make it look like it was brand new.

The bike came with a detailed maintanance book. Most of the services and modifications were documented. To confirm the last service I went through the bike and discovered all of the fluids and filters were new and/or fresh. That made me very happy. Now its time to get to work looking at the rest.

Let the journey begin.
Attachments
img_8396.jpg
img_8396.jpg (1.3 MiB) Viewed 11869 times
img_8392.jpg
img_8392.jpg (1.43 MiB) Viewed 11869 times
img_8391.jpg
img_8391.jpg (1.26 MiB) Viewed 11869 times
img_8390.jpg
img_8390.jpg (1.23 MiB) Viewed 11869 times
img_8374.jpg
img_8374.jpg (247.12 KiB) Viewed 11869 times
img_8376.jpg
img_8376.jpg (295.14 KiB) Viewed 11869 times
1966 R60/2, 1967 R69S, 1975 R90S, 2020 R1250GSA

User avatar
Twocams
Posts: 781
Joined: Sun Mar 16, 2014 8:42 pm

Yes this is a great group of

Post by Twocams »

Yes this is a great group of people. They have helped me out several times. And lots of help on my engine rebuild on my R69S.

twocams
Twocams
92 R100RT/69 R69S
2004 Aprilia Atlantic 500cc single cylinder Scooter
83 Honda V65 Magna, fastest production bike in1983
2015 Can Am Spider SE6 1,688 miles
2018 Moto Guzzi V711 Special

Post Reply