BMW K bikes (Bricks)

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aladin1

aladin1
active member
active member
Can anyone recommend a good solvent, cleaner, degreaser to remove oil and grease from my engine parts as I continue to delve deeper into the workings of my K. I am renovating/refurbishing/doing up my bike after it was left unused by me for 5 years and as this is my first bike total strip down since 1970 I am a bit out of touch with products that are available in the UK market. In 1970 I just used to swill every thing in petrol but that's a bit dodgy I suppose.

    

Dai

Dai
Life time member
Life time member
Most of those products based on citric acid are a lot better than you would suppose. I used Hein Gericke's own brew - unfortunately no longer available - but another very popular one is Muc Off. Avoid the old-style Gunk; it stinks the same but I suspect the formula has been changed because it ain't nowhere near as good as it used to be.


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1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

92KK 84WW Olaf

avatar
Life time member
Life time member
MucOff is good stuff but dont let it on too long. Coke is good stuff too.


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 39.885miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

walfish

walfish
Life time member
Life time member
Jeyes Fluid will clean it off, hose with water then apply by brush and hose off after a short while, but do not leave too long on painted surfaces.
Learnt this from a mate's old man who had a bike shop in the 60's.

Degreasers and cleaners in the UK  22936


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Degreasers and cleaners in the UK  Uk-log10 88 K 100  0033026 
   
                            92 K 1100 LT  6455097
    

Kyle10

Kyle10
Life time member
Life time member
Try a bottle of Marvel Mystery Oil  

- Used with a scotch pad it will clean oxidation and gunk from aluminum without discoloring or staining it. In fact the metal will 'drink' up the oil, providing it with a nice gleam and real resistance to further grime buildup. 
- Dabbed or sprayed on built-up crud and left overnight will enable you to wipe of years of grease, oil and road muck buildup
- Likewise, left on rust spots overnight it will penetrate beneath the rust and allow you wipe most of it off. This works esp. well with chrome. 
- Rejuvenate dried rubber bits by soaking them in a 80% MMO/20% acetone mix. Give it overnight. I use ziplock bags. 
- Pour in the crankcase and run your engine with it until the next oil change. Do it again. A superb and safe de-crudder for rings, top end and valvetrain components

Cheap, safe and effective.


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1985 K100rt 0052183
1983 Honda VF750 007713 
    

Point-Seven-five

Point-Seven-five
Life time member
Life time member
+1 on Marvel Mystery  Oil.  As I recall, on of the main ingredients is Stoddard solvent.  For cleaning parts with a lot of road dirt my favorite is S-100.


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Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

aladin1

aladin1
active member
active member

Try a bottle of Marvel Mystery Oil  

With a name like that it's got to be worth trying.

    

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