BMW K bikes (Bricks)

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1Back to top Go down    Cylinder head question on Wed Jan 15, 2014 11:37 am

ssj_Gill

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Good afternoon chaps,
i'm tearing into my K100LT engine with a furry the likes of which has never been seen before and like a class A dope i sheared one of the big bolts that hold the cylinder head to the main engine block. managed to get it out but now it needs replacing (as do many many other parts).

does anyone know the part number? or a place where i can find the part number?

thanks muchly

    

2Back to top Go down    Re: Cylinder head question on Wed Jan 15, 2014 11:46 am

92KK 84WW Olaf


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Don't kill yourself over it shearing, happens everyone and is much more common than you think. If that was my engine I would be replacing them all anyway, whether or not its recommended, due to theage of engine etc.

I don't have the part numbers though but I suspect you will need engine number and someone here will be able to give you the part numbers. Motoworks or Motobins can probably do it on the phone.

Have a look here, its on the Portal section of the forum.

http://www.realoem.com/bmw/select.do?kind=M&series=K589&arch=1


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1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 83,150miles
    

3Back to top Go down    Re: Cylinder head question on Wed Jan 15, 2014 11:55 am

mike d


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Hi,

Part number 11 121 454 069 fromhttp://www.maxbmwmotorcycles.com/fiche/DiagramsMain.aspx?vid=51747&rnd=04302013

Can't see them on either the Motorworks or Motobinns sites.

Mike

    

4Back to top Go down    Re: Cylinder head question on Wed Jan 15, 2014 11:58 am

92KK 84WW Olaf


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Mike

That was fast. I got as far as finding the parts fiches. Would you go with replacing them all as a matter of interest?

Olaf.


__________________________________________________
1992 K100LT 0193214 101,000 miles
1984 K100RT 0022575 Baja Red bought 36,000 now 83,150miles
    

5Back to top Go down    :D on Wed Jan 15, 2014 12:31 pm

ssj_Gill

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cheers fella, top notch responses as always. i think my biggest bloody outlay is going to be replacing all the bolts on this rebuild Razz

    

6Back to top Go down    Re: Cylinder head question on Wed Jan 15, 2014 12:42 pm

k75RT Keith

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For your rebuild, it's best to remember that the cylinders are nikasil and that honing is NOT recommended. Scotchbrte padworks best

    

7Back to top Go down    Re: Cylinder head question on Thu Jan 16, 2014 6:12 am

mike d


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Personally, would.

Mike

    

8Back to top Go down    Re: Cylinder head question on Thu Jan 16, 2014 8:16 am

RicK G

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Very light with a medium grit and no oil or kero just run them under the hot water while you do it.
If they havent done many miles then not necessary but for the average K yes the bore can be so good and smooth that the rings will never bed. BMW usually only deal with them in the warranty period


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If everything seems under control then you aint goin fast enough:- Mario Andretti
Bikes 1986 K100RT, 1993 K1100 LT, 1994 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 & 1976 SR 500 Yamaha for now
    

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