Valve clearance checks - BMW Luxury Touring Community
 
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post #1 of 16 Old Dec 6th, 2006, 1:58 pm Thread Starter
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Valve clearance checks

Have just checked the valve clearances on my '05 LT. They are as follows;

Cyl. #1.. In (a) .005 In (b) .006 Exh (a) .009 Exh (b) .009

Cyl. #2.. In (a) .007 In (b) .006 Exh (a) .010 Exh (b) .010

Cyl. #3.. In (a) .007 In (b) .007 Exh (a) .010 Exh (b) .010

Cyl. #4.. In (a) .005 In (b) .004 Exh (a) .011 Exh (b) .011

The bike has 23,750 miles on it.

I have not disassembled anything yet to check shim thickness but at this point intake (a) and exhaust (a) and (b) on cylinder #1 are in need of replacement along with intake (a) and (b) on cylinder #4

Any comments, helpful hints, or other insight on this would be appreciated from any and all you experienced in such matters.

Regards,
Austin S
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post #2 of 16 Old Dec 6th, 2006, 2:00 pm
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How were they at 12K? Mine tightened up slightly on a couple but were still well into spec at 24K. Guess I got lucky.

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post #3 of 16 Old Dec 6th, 2006, 2:03 pm Thread Starter
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Quote:
Originally Posted by jzeiler
How were they at 12K? Mine tightened up slightly on a couple but were still well into spec at 24K. Guess I got lucky.
They wern't checked at 12k.
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post #4 of 16 Old Dec 6th, 2006, 2:08 pm
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Ok, then as long as you did the check properly (used loose feeler gages) then I guess the next step is to pull the cams and see what size buckets you need. There have been a few recent posts dealing with some of the pit falls of this process. I have yet to perform it, but was prepared this time and got lucky.

John
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2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
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But lack DE, MA, RI and CT with the 2005 LT

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post #5 of 16 Old Dec 6th, 2006, 4:36 pm
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Valve clearance

Quote:
Originally Posted by jzeiler
Ok, then as long as you did the check properly (used loose feeler gages) then I guess the next step is to pull the cams and see what size buckets you need. There have been a few recent posts dealing with some of the pit falls of this process. I have yet to perform it, but was prepared this time and got lucky.
Austin, I would echo John's statement and to make SURE you are checking the clearances properly. I know I checked mine at least 4-5 times before I felt comfortable I was checking them properly and getting the same reading. I have not had a whole lot of experience with using feeler gauges and after removing the feeler gauges from the tool (using a loose gauge), my valve clearance numbers changed (for the better).

I ended up changing 6 intake buckets, and no exhaust.

Another bit of advice would be to make certain that if/when you do change buckets, to make sure you properly relieve the tension in the chain to allow easy placement of the sprockets onto the end of the cams. This was a big learning step for me in this process.

Best of luck to you.

James

James Hart
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post #6 of 16 Old Dec 6th, 2006, 5:04 pm Thread Starter
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On the question of feeler guages. I used two sets of guages none of which were loose. One was the typical 'jack knife' type. The other was a 12" long 'jack knife' type. I checked first with the shorter ones and rechecked my findings with the longer 12" ones. They, for the most part confirmed my findings with the short ones. In a couple of cases they were a better fit between the lobes and the buckets. I agree this is a critical measurement and therefore I will recheck in the am with loose guages just to be absolutely sure. Thanks for the heads-up on this one.

Austin S.
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post #7 of 16 Old Dec 7th, 2006, 8:59 am Thread Starter
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Rechecked the readings this morning with loose gages. For the most part yesterdays readings were verified. Three additional exhaust valves showed up as needing adjustment. Two were down from readings of .010 to .009 and one was down from .011 to .009. I rechecked them a number of times to be absolutely sure and am satisfied with todays readings.

My next move is to contact the local BMW dealer (about 250 miles away) to sort out the logistics for warranty repairs.
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post #8 of 16 Old Dec 7th, 2006, 9:31 am
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Quote:
Originally Posted by ajs
My next move is to contact the local BMW dealer (about 250 miles away) to sort out the logistics for warranty repairs.
Warranty repairs for an adjustment thats part of a service interval? Good luck...more than likely a bill if you want the valves adjusted.

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post #9 of 16 Old Dec 7th, 2006, 9:31 am
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Quote:
Originally Posted by ajs
-----------My next move is to contact the local BMW dealer (about 250 miles away) to sort out the logistics for warranty repairs.
Valve adjustments are not a warranty item, but a standard maintenance procedure. Warranty does not cover standard maintenance adjustments.

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post #10 of 16 Old Dec 7th, 2006, 11:08 am Thread Starter
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Yeah, I got the message loud and clear from the dealer. Oh well!! onward and upward.
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post #11 of 16 Old Dec 15th, 2006, 11:00 am Thread Starter
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An update on my valve check and adjustment project. Rec'd 7 new followers from dealer, installed same, reinstalled cams, and all related parts, everything lined up according to info from this site, and Clymer, rechecked for clearances as follows; All intakes are now at .007 and all exhausts at .010. These checks were made 3 separate times and all 3 times the readings were the same.

I am very happy with the results. They are certainly a lot better than the clearances I got initially. I have completed the reassembly of the top end of the engine, and except for final test, (but WILL IT START) I am completely satisfied with the way it turned out. Not bad for a first timer on a K12 engine. Many thanks from all on this site who helped me out in one way or another.

P.S. I haven't started the engine yet because I am in the middle of an oil change and other routine maintenance checks and repairs, but that will come in time.

Thanks again
Austin S.
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post #12 of 16 Old Dec 15th, 2006, 1:19 pm
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Thumbs up Good Job!

Way to go on the valve clearance adjustment Austin. I know it felt good after I did mine. I recently had to change out six buckets (all intake). All were in spec after the change. I have yet to start mine back up due to still working on getting the new throttle cables installed. I will be back to work on it tomorrow though.

Ride safe,

James

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post #13 of 16 Old Dec 15th, 2006, 2:29 pm
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Quote:
Originally Posted by ajs
P.S. I haven't started the engine yet because I am in the middle of an oil change and other routine maintenance checks and repairs, but that will come in time.

Thanks again
Austin S.
Don't let your heart stop if you hear a clatter when you start it. Sometimes they make noise till the cam chain tensioner pumps up.



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post #14 of 16 Old Dec 15th, 2006, 3:18 pm
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Austin,

The best part is this is most likely the last time you will have to do more than just check the clearances. She is bedded in. The valves do get tight as the seats wear and the fact that she didn't have the 12K check contributed to the extra tight valves you found this time. I'll wager the next three checks are all "normal". Enjoy!

John
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2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

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post #15 of 16 Old Dec 15th, 2006, 4:34 pm Thread Starter
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Quote:
Originally Posted by grifscoots
Don't let your heart stop if you hear a clatter when you start it. Sometimes they make noise till the cam chain tensioner pumps up.
Thanks for the heads up. Something like that could take the smile off a persons face real fast.
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post #16 of 16 Old Dec 15th, 2006, 4:38 pm
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Quote:
Originally Posted by jzeiler
Austin,

The best part is this is most likely the last time you will have to do more than just check the clearances. She is bedded in. The valves do get tight as the seats wear and the fact that she didn't have the 12K check contributed to the extra tight valves you found this time. I'll wager the next three checks are all "normal". Enjoy!
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