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post #1 of 17 (permalink) Old Oct 19th, 2007, 2:57 pm Thread Starter
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Valve check ?

Hello All,

Question for ya.

My '04GT has just turned 17,000 miles.
Thought to have the valve clearances checked.
(I know it is a 12K service item according to the book.

One local service fellow told me "I NEVER have adjusted / changed a shim on a K-bike.
Checked them... but they NEVER needed to be changed out.
I'll take your $ if you insist.

Thoughts??

Thanks
Dmilan
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post #2 of 17 (permalink) Old Oct 19th, 2007, 3:17 pm
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I an glad that HE knows that YOUR valve clearances are correct! I had my first tight valve and in need of adjustment at 36K, but you never know unless you check them.

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post #3 of 17 (permalink) Old Oct 19th, 2007, 4:03 pm
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In just over 100k miles, I've had two exhaust valves adjusted...one at 12k, the other at 48k.

Your "friend" could be right. Looks like my experience somewhat backs him up. Except I needed one at 12k...



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post #4 of 17 (permalink) Old Oct 19th, 2007, 5:10 pm
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I checked mine at 36K and couldn't get any closer to correct using the stock shims - so all was well.

I think your friend may be right, but I'd always prefer to do my own check first so I know what they start from. When the bike left the factory or valves last got checked, the clearances may have just come out on the low side of the correct tolerance. So the time needed for action may be earlier than say a bike with clearances at the high end of tolerance.

Clearances reduce over time and exhausts tend to move more than inlets due to heat on the valve head and seat.



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post #5 of 17 (permalink) Old Oct 19th, 2007, 9:44 pm
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Valve Check

K bikes rarely need valve adjustments; the need for adjustment seems to be related to how the bike is used, hence the original "caountdown" on the new gen K12s. Check them by 12,000 miles and see how theiy're doing. If they need adjustment, do it again at 24K. If they don't, stretch the next interval. My K1200RS needed no valves adjusted when first check, nor has it since. Likewise my K1 or (8 valve) K100RS.
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post #6 of 17 (permalink) Old Oct 20th, 2007, 2:51 am
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........and dealers can charge you quite a lot of money for a fairly straight forward but time consuming procedure done by junior techs. Since there are 16 valves, there are bound to be a couple of marginals, so you feel better paying their bill afterwards!



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post #7 of 17 (permalink) Old Oct 20th, 2007, 6:18 am
 
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My 2003K1200rs has 19,000 miles valves never checked, but it's now at the dealer and I'm going to have them do the check. Will advise the forum on the outcome.
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post #8 of 17 (permalink) Old Oct 20th, 2007, 9:18 am
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I've changed buckets on 14 LT's during the course of tech sessions. They do go out of spec and you do need to check them. I've seen them out of spec at 24k and I know a feller that has 136k and they are still in spec.

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post #9 of 17 (permalink) Old Oct 20th, 2007, 1:14 pm
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My local dealer is only 5-10mi from home. But when the 600 mi service was due, they wanted twice what 3 other dealers wanted. So anytime I need to plug in and keep my warranty up, I slab it 230mi upstate to Touring Sport, where I bought it. They told me I could do the valve check/adj myself, and any other service items needed, but if anything was questionable later on in a warranty claim, Bmw might take into consideration that I did the service. But I did it anyway, and recorded the specs so I know what they will be on the next check. I had 2 ex a little tight for my liking and changed the buckets and never looked back.
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post #10 of 17 (permalink) Old Oct 20th, 2007, 2:53 pm
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Quote:
Originally Posted by samsdad57
... But I did it anyway, and recorded the specs so I know what they will be on the next check. I had 2 ex a little tight for my liking and changed the buckets and never looked back.
From your photos, that looks a little easier to get to than the newer GT engine. The '06 and later engines look to be a major pita to get to the valves; i.e. tank removal, radiator removal, etc. before even removing the valve cover from my initial glance.

From what I saw of their cut-away engine, it looks like the newer ones use some sort of half-ball shaped shim at the end of the rocker arm for the adjustment?
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