K11 Owners Group

malcolmt · Posted: Wed Oct 20, 2010 9:55 am Post subject: Valve clearance adjustment

Hi All,

I check my k11 over a few weeks ago and find one inlet valve is a little tight. The min is 0.006", mine is 0.005".
I spoke to BMW about it and got a loong tale of doom and gloom.
They say the labour to remove is expensive, then the bike will sit for THREE MONTHS while a new shim arrives, then more labour to fit.

Is a 5thou narrow enough to warrent changing the shim ?
If yes then it takes 2-3 weeks for a shim to arrive from motobins.
Fortunatly the shim is on #4 cyl so should be easier to pull.

Cheers
Malcolm
Joburg, South Africa
_________________
******************************
A Bike on the road is worth two
in the shed
******************************

Phil Marvin · Posted: Wed Oct 20, 2010 11:06 am Post subject:

Hi, Malcolm,
Because of the design of the K1100 engine, in order to replace a "shim" (in reality, the entire bucket), one or both camshafts must be removed. If only one (or more) intake or exhaust valves is tight or loose, only the exhaust or intake camshaft need be removed. If both an intake and exhaust valve are tight or loose, both camshafts must be removed. It can be done by the owner, but it is more complicated than with the 2-valve engines. There are a couple of special tools which are nice to have, although it is possible to do without the special tools. Three months to receive a shim is ridiculous! Of course, you must first measure your clearance, then remove the offending shim and determine its thickness, then determine the thickness of the shim you need, then obtain that shim, etc., etc. The price from a BMW motorcycle dealer in the USA is a little over $20 per shim. Good Luck!
_________________
Ride Safe,
Phil Marvin in El Paso, TX
'94 K75A/3
'95 K75RTP

Flying Duck · Posted: Wed Oct 20, 2010 11:41 am Post subject:

Here's a workaround I came up with for depressing the timing chain tensioner without the use of a BMW special tool:

http://smithduck.home.comcast.net/~smithduck/bmw/tech/valves/camchaintensioner.htm

And here's the IBMWR page on 16V valves:
http://www.ibmwr.org/ktech/valve-adjust-16v.shtml
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

michaelcurrin · Posted: Wed Oct 20, 2010 12:32 pm Post subject:

Or here

http://www.gunsmoke.com/motorcycling/k1200rs/valves/index.html
_________________
Mike Currin
20 BMW R1250RS
93 BMW K1100RS / EML Speed 2000
06 Ducati ST3
67 Triumph 650 chopper

old guy old bike · Posted: Wed Oct 20, 2010 12:38 pm Post subject:

I would make sure that the temps were correct and that the timing was spot on and check the clearance again. It does not take much to come up with .001 error. Kind of like the old carpenter rule of thumb, measure twice and cut once.
Jeff
_________________
1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods

Tim (Midland Section) · Posted: Wed Oct 20, 2010 7:27 pm Post subject:

The bloke who I paid to do mine (sadly gone now) had a simple idea. Take .001 off the shim on the surface grinder. And to think I sent it to him as I couldn't be arsed to wait 3 days with the bike in bits whilst the shims arrived Laughing

_________________
Regards Tim,

Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
#485