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Old 11-27-2012, 04:35 AM   #16
MikeMike
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Maybe someone can get hold of a PDF of the new specs or scan a copy of the bulletin?
Please and thank you.
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Old 11-27-2012, 09:45 AM   #17
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Hmmm, maybe that is why even though my valves are in the current specs as I know them, my bike sounds like it has marbles in the top end when I first start it. Of course last week when at dealer to get fuel tank replaced, they said the sound was normal.How big of a thumb drive did it take to fit the dvd. Great idea. I was taking my dvd with me on long trips, but didn't like doing it because I was worried about trashing it.
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Old 11-27-2012, 10:26 AM   #18
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According to my dealer the new specs are not part of any bulletin or recall, just the specs on the latest CD from BMW (I don't know the date of that CD).

Here's the new specs

Intake new .23-.33mm old was 18-26
exhaust new .30-.41mm old was .27-.35

My (actually my wife's) bike is 10/09 maunufacter date and according to the shop is subject to the new specs.
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Old 11-27-2012, 10:43 AM   #19
JRWooden
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Quote:
Originally Posted by Ratchdaddy View Post
Hmmm, maybe that is why even though my valves are in the current specs as I know them, my bike sounds like it has marbles in the top end when I first start it. Of course last week when at dealer to get fuel tank replaced, they said the sound was normal.How big of a thumb drive did it take to fit the dvd. Great idea. I was taking my dvd with me on long trips, but didn't like doing it because I was worried about trashing it.
yeah... that was my fear as well ... it fits with ease on a 4Gb drive.

Just don't panic if it takes serveral HOURs to copy..............
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Old 11-27-2012, 10:45 AM   #20
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Quote:
Originally Posted by TexPaul View Post
According to my dealer the new specs are not part of any bulletin or recall, just the specs on the latest CD from BMW (I don't know the date of that CD).

Here's the new specs

Intake new .23-.33mm old was 18-26
exhaust new .30-.41mm old was .27-.35

My (actually my wife's) bike is 10/09 maunufacter date and according to the shop is subject to the new specs.
Thanks for posting this!

Holy crap.... that's a damn big jump.....
The new specs. are almost outside of the original specs....
I guess they are worried about the bikes using up the lash and then burning valves.......

I guess I can plan for my bike to be apart a few days to order up new shims.............
and............ plan on pulling out the camshafts ... sheezzzzzzzzzzz

JRWooden screwed with this post 11-27-2012 at 10:52 AM
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Old 11-27-2012, 11:47 AM   #21
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Quote:
Originally Posted by TexPaul View Post
According to my dealer the new specs are not part of any bulletin or recall, just the specs on the latest CD from BMW (I don't know the date of that CD).

.
F that S!

In my experience as a Motorrad tech, if there isn't some sort of paperwork that explains it then it's a typo. There are errors all over the tech pubs. During my training I often had to answer wrong in order to get it "Right". Such as....Regarding the f800gs and the f650gs twins, which model has an optional tire pressure monitor?" F650gs which has tubless tires making this possible?? WRONG!! PLEASE TRY ANOTHER ANSWER. Another reason I left.

Anyway, I believe it did change but I'm not touching anything till I see it in writing and with the applicable SN's.

YMMV
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Old 11-27-2012, 03:18 PM   #22
JRWooden
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I have sent an inquiry to a helpful insider ....
If I get anything good back on this I will post.........
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Old 11-27-2012, 04:07 PM   #23
itsatdm
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That is a big jump, but if it on the CD it must be right. I got to go crank in that 1mm clearance for my clutch cable.
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Old 11-27-2012, 04:30 PM   #24
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Originally Posted by itsatdm View Post
That is a big jump, but if it on the CD it must be right. I got to go crank in that 1mm clearance for my clutch cable.
Exactly!

And I've drained alot of fresh oil after over filling it to "Specification".

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Old 11-28-2012, 04:49 AM   #25
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Just to continue with the idle and un informed (On my part) speculation

Maybe they changed the material in the valve and they "grow" a bit more with temperature.


In any case...i'm doing nothing. On my bike when the valves where checked for the first time at 30k miles, there was no adjustment done.

I have to wonder what the factory settings are!
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Old 11-28-2012, 04:56 AM   #26
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Quote:
Originally Posted by TexPaul View Post
According to my dealer the new specs are not part of any bulletin or recall, just the specs on the latest CD from BMW (I don't know the date of that CD).

Here's the new specs

Intake new .23-.33mm old was 18-26
exhaust new .30-.41mm old was .27-.35

My (actually my wife's) bike is 10/09 maunufacter date and according to the shop is subject to the new specs.
Thanks for this; where did this information come from? Just curious.
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Old 11-28-2012, 01:18 PM   #27
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Just had a look while Jesse, my mechanic, had my cams out to adjust my valves.



Interesting design to the shims. They are tiny, and their size is marked on the side.

They fit in here:



And when Jesse takes the plastic off, he does it this way, saving time.



This is the shim chart for my bike:

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"The motorcycle, being poorly designed for both flight and marine operation, sustained significant external and internal damage," police noted.

Emmbeedee screwed with this post 11-28-2012 at 04:12 PM
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Old 11-29-2012, 01:57 AM   #28
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Quote:
Originally Posted by MCMXCIVRS View Post
Older car engines gained clearance due to all the wear in the poorly lubricated valve train. Lifters wore, pushrods wore, rocker arms wore at the tips and the pivot, even the valve stem tips wore. All those wear points added up to more wear than the little bit on the valve seats and faces and led to increased clearances. Modern OHC engines have fewer valve actuation components to wear, and have better lubrication with better lubricants. The valve seats and faces are the most significant contributor to changing clearances now, but even that is less than on the older stuff.
+1 on newer bikes the clearence decreases, which is a well known problem.
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Old 11-29-2012, 02:26 AM   #29
CaliKarl
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So the new bikes, with bigger clearances, have less power?
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Old 11-29-2012, 10:33 AM   #30
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Just talked to a shop I trust up in Chico CA. Said the valve specs were changed but recommendation from the shop is to just wait until the next interval and then check and change it if needed. I let him know mine were just done and he said it can still wait until the next needed valve check... Sounds ok to me.
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