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Thread: Camhead Valve Check Inquiry

  1. #1
    Registered User robbw's Avatar
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    Camhead Valve Check Inquiry

    2013 R1200RT approx. 21K miles. Purchased in September with 18.5K miles. Unknown service history as servicing dealer closed. I have been doing all needed maintenance to familiarize myself with the camhead (this replaced a 2005 RT) and decided to change spark plugs and check valves. Yesterday I measured using the lines on the exhaust cams to find TDC and measured in mm. 5 of the 8 were at or below low end tolerance, but my feeler gauges don't have as many mm steps as I'd like.

    I just went out this morning, with my beautiful assistant and pillion, and remeasured, this time using a bamboo skewer to make sure we were at TDC. I also measured in 1/1000 inch instead of mm. Specs are INTAKE .005"-.009" EXHAUST .011"-.016". Here are the results: left top intake .005" left bottom intake ,005" left top exhaust .014" left bottom exhaust .012" right top intake .007" right bottom intake .004" right top exhaust .014" right bottom exhaust .011". So according to that, my right bottom intake is too tight and 4 more are really close to tight tolerance. I ordered another feeler gauge and will recheck again when it arrives.

    My question is, what would cause these measurements to be so tight on a bike with just 21K? It runs great but does use some oil. Thanks! Robb
    Valves.jpg
    Last edited by robbw; 01-24-2021 at 07:51 PM.

  2. #2
    SURVIVOR akbeemer's Avatar
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    If they are indeed that tight, then that would be unusual for a Camhead; they are known for the longterm stability of their valve settings. No idea as to why they would tighten, perhaps the previous owner adjusted them and did it incorrectly.

    Any BMW dealer can pull up the history of your bike on their computer system. Anytime it is seen at a dealer they enter what was done. So a dealer can give you a record of scheduled maintenance, warranty work, service bulletins performed as well as recalls and damage repair. All that is needed is the VIN and a cooperative dealer.
    Kevin Huddy
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  3. #3
    Registered User robbw's Avatar
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    Quote Originally Posted by akbeemer View Post
    perhaps the previous owner adjusted them and did it incorrectly.
    I know the previous owner did NOT do any servicing in the two years he had it. The original owner had the dealer do all service work. But thanks for the reply!

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    Registered User pappy35's Avatar
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    You said you rode it. Wax it dead-cold when you rechecked them?
    '13 R1200RT 90th Anniversary Edition

  5. #5
    Registered User jandhumphreyme's Avatar
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    My '11R has had to have a few shims changed before 25k miles, no big deal. I found after that though things settled in nicely and in the next 25k no changes were required.
    So often times it happens that we live our lives in chains
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  6. #6
    Registered User robbw's Avatar
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    Quote Originally Posted by pappy35 View Post
    You said you rode it. Wax it dead-cold when you rechecked them?
    Dead cold in a 60 degree garage. The reference to riding it was the 3 months before I tore it apart.

  7. #7
    Registered User robbw's Avatar
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    Quote Originally Posted by jandhumphreyme View Post
    My '11R has had to have a few shims changed before 25k miles, no big deal. I found after that though things settled in nicely and in the next 25k no changes were required.
    Thanks for the reply! Now I have to track down shims and clips. Local dealer is about an hour away...

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    The PO of my 2013 R1200R had a valve adjustment done before I bought it with 16000 miles. It went another 32000 miles before a few of the valves were out of spec. Because the shims are expensive, I pulled the ones from the valves needing adjustment and found that a few of them would work in different valves to get them back into spec. I only had to buy 3 shims to service 6 valves. I ordered from Bob's and had the shims a couple of days later. I have Jim's JVB dvd for camhead servicing which was a great help.

    Doug
    Sent from a Galaxy, far, far away

  9. #9
    Registered User robbw's Avatar
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    Quote Originally Posted by 83014 View Post
    The PO of my 2013 R1200R had a valve adjustment done before I bought it with 16000 miles. It went another 32000 miles before a few of the valves were out of spec. Because the shims are expensive, I pulled the ones from the valves needing adjustment and found that a few of them would work in different valves to get them back into spec. I only had to buy 3 shims to service 6 valves. I ordered from Bob's and had the shims a couple of days later. I have Jim's JVB dvd for camhead servicing which was a great help.

    Doug
    Thanks! Ordering parts tomorrow.

  10. #10
    Registered User pappy35's Avatar
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    Quote Originally Posted by robbw View Post
    Dead cold in a 60 degree garage. The reference to riding it was the 3 months before I tore it apart.
    Just THREE months?!? The RepROM clearly states at least a four month cool down is required! Jeez. Noobs.

    '13 R1200RT 90th Anniversary Edition

  11. #11
    Registered User robbw's Avatar
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    Quote Originally Posted by pappy35 View Post
    You said you rode it. Wax it dead-cold when you rechecked them?
    Never heard of waxing it dead cold to check valves? Jeez, old-timers...
    2013 R1200RT 90th Anniversary Edition

  12. #12
    Registered User pappy35's Avatar
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    Quote Originally Posted by robbw View Post
    Never heard of waxing it dead cold to check valves? Jeez, old-timers...
    Yeah. You're supposed to was before you check the valves. It's in the RepROM.
    '13 R1200RT 90th Anniversary Edition

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