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#1 | 2017 RS valve shim options datum

Thu Feb 16, 2023 9:23 pm (Last edited: Thu Feb 16, 2023 10:15 pm)

Just wondering if there are shim options for 2017 RS, I mean from different bike brand. This is the flat shim 8.85 mm diameter.
Thanks

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#2 | RE: 2017 RS valve shim options datum

Sat Mar 18, 2023 9:32 pm

I'm using Wiseco valve shims on my 2016 RS. I've replaced a couple so far and they have worked fine. I got this kit from Amazon: https://www.amazon.com/dp/B006573A6I?ref...7200Z4EX4DRRHV8

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#3 | RE: 2017 RS valve shim options datum

Sun Mar 19, 2023 6:37 pm

Zitat von Tod1d im Beitrag #2
I'm using Wiseco valve shims on my 2016 RS. I've replaced a couple so far and they have worked fine. I got this kit from Amazon: https://www.amazon.com/dp/B006573A6I?ref...7200Z4EX4DRRHV8

Thanks for the link. From that it looks like the correct diameter is 8.90 mm for proper fit ... please confirm.

Regards,
Grumpy Goat
RSWasserboxer.com
2016 BMW R1200RS
2014 BMW S1000R

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#4 | RE: 2017 RS valve shim options datum

Sun Mar 19, 2023 7:18 pm

As a matter of interest, why use aftermarket shims such as Wiseco rather than OEM BMW shims?

BTW, the BMW LC boxer engines (and also the camhead air-cooled engines) use finger type cam followers rather than bucket type followers.
Here's an interesting article on finger followers for anyone who is interested in such things.
https://www.cycleworld.com/about-those-f...he%20cam%20lobe.

Eventual master of the obvious
2020 BMW R1250RS Sport
Austin yellow

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#5 | RE: 2017 RS valve shim options datum

Sun Mar 19, 2023 7:46 pm (Last edited: Sun Mar 19, 2023 7:57 pm)

Zitat von Grumpy Goat im Beitrag #3
Zitat von Tod1d im Beitrag #2
I'm using Wiseco valve shims on my 2016 RS. I've replaced a couple so far and they have worked fine. I got this kit from Amazon: https://www.amazon.com/dp/B006573A6I?ref...7200Z4EX4DRRHV8

Thanks for the link. From that it looks like the correct diameter is 8.90 mm for proper fit ... please confirm.

Yes, 8.90mm is correct. I measured the stock shims with a dial caliper and they match up perfectly.

EDIT: I just double checked the kit versus the stock shims that I've removed and they are actually around 8.85mm, so they do match stock but the 8.90mm size appears to be nominal.

Grumpy Goat likes the post

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#6 | RE: 2017 RS valve shim options datum

Sun Mar 19, 2023 8:13 pm

Zitat von Steady Eddie im Beitrag #4
As a matter of interest, why use aftermarket shims such as Wiseco rather than OEM BMW shims?

BTW, the BMW LC boxer engines (and also the camhead air-cooled engines) use finger type cam followers rather than bucket type followers.
Here's an interesting article on finger followers for anyone who is interested in such things.
https://www.cycleworld.com/about-those-f...he%20cam%20lobe.

I bought the kit for convenience. When doing a valve adjustment you normally measure the clearances, then measure the shims and calculate the sizes for the new shims you need. Then you need to either order the new shims and wait for them, or go to your local dealer and hope they have them. So having the kit saves time. Plus, BMW shims cost about $9 each. This kit includes 3 shims in 23 thicknesses from 1.72mm to 2.60mm, so you get a total of 69 shims for about $60. So it only takes about 7 shim changes to pay for the cost of the kit.

these members like the post: Grumpy Goat and Steady Eddie

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#7 | RE: 2017 RS valve shim options datum

Mon Mar 20, 2023 5:27 am

Zitat von Tod1d im Beitrag #5

Yes, 8.90mm is correct. I measured the stock shims with a dial caliper and they match up perfectly.

EDIT: I just double checked the kit versus the stock shims that I've removed and they are actually around 8.85mm, so they do match stock but the 8.90mm size appears to be nominal.

Excellent. Thanks for the confirmation. I was looking for a set of assorted shims and these present as a good option. There are even others on Amazon more expensive, but surely much cheaper than the BMW ones.

Regards,
Grumpy Goat
RSWasserboxer.com
2016 BMW R1200RS
2014 BMW S1000R

Tod1d likes the post

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#8 | RE: 2017 RS valve shim options datum

Mon Mar 20, 2023 5:29 am

Zitat von Tod1d im Beitrag #6

I bought the kit for convenience. When doing a valve adjustment you normally measure the clearances, then measure the shims and calculate the sizes for the new shims you need. Then you need to either order the new shims and wait for them, or go to your local dealer and hope they have them. So having the kit saves time.

This is my main reason. The bike doesn't stay disassembled while I go chasing shims ... too much drama.

Regards,
Grumpy Goat
RSWasserboxer.com
2016 BMW R1200RS
2014 BMW S1000R

these members like the post: Steady Eddie and Tod1d

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#9 | RE: 2017 RS valve shim options datum

Sun Apr 16, 2023 9:18 pm

I bought the shim I needed from BMW dealer. After that, I purchased five 8.9 mm shims from AliExpress for less than one from dealer.

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