BMW K bikes (Bricks)


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1Back to top Go down   Considering a 1988 K100RS Empty Considering a 1988 K100RS Fri Jul 11, 2014 4:19 pm

BigDawg7110

BigDawg7110
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I am considering purchasing a 1988 K100RS.  Has luggage.  Been sitting for years but stored in a heated garage.  Everything is there and it looks OK, no dings etc.  55,000 miles.  Prices is $400 US dollars. Motor is free.

I assume I would need to completely clean fuel tank and fuel system.  Possible soak the cylinders.  Change fluids, etc. Install new tires and battery.

What else should I  be thinking about if I want to bring this thing back to life.  $400 seems like low risk.  

Were 1988 models fuel injection or carb?

Thanks for any information you can provide.

BigDawg

    

2Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Fri Jul 11, 2014 6:11 pm

Guest

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No K has ever had a carb fitted as standard.

    

3Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Fri Jul 11, 2014 6:16 pm

charlie99

charlie99
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welcome aboard

if you are mechanically minded ...with a little electrickery smarts and you are prepared to do the work your self ..

it could be a rewarding experience

as always, rubber bits age ...and need replacement i'm afraid ...there doesnt seem to be any shortcuts ...but with care the process could be a planned and generally not too expensive venture .

have a go ...as you say your not too indebted to opt out if the whole thing goes belly up , spares are always sought after and for reasonable prices might sell quickly .
of corse we would be interested to see another k back on the road

have fun


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

4Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Fri Jul 11, 2014 7:13 pm

92KK 84WW Olaf

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Your biggest items are rubbers and seals. They perish with age and time. You need to replace as many of these as you can, they won't last. Also fuel pipes and lines.

The splines should probably be lubed as the grease on them is likely to be dried up and gone hard. If you do splines and check out the seals you have a good bike. The fuel tank as you said too and all fluids.

For the money you got a good bike and its worth bringing it back to life, it will last for years.

Everyone here is very helpful here. So let the work begin!


__________________________________________________
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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

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
    

5Back to top Go down   Considering a 1988 K100RS Empty Thanks Fri Jul 11, 2014 7:17 pm

BigDawg7110

BigDawg7110
active member
active member
I am going to check out the splines before I purchase.  If OK, I'm going ahead.

I have restored a 1953 tractor from the ground up including engine work, so I am up to restoring this bike.

I will most likely be visiting this forum often.

Thanks for the lightning fast response and if anybody want to add something to check out, go for it.

BigDawg
Wisconsin

    

6Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Sat Jul 12, 2014 2:40 am

Ghost who rides

Ghost who rides
Life time member
Life time member
For $400 you get a well engineered BMW that can be totally rebuilt to new spec, at great cost
or
A wrecker that will certainly repay, given time
or
anywhere between these two

I reckon they are $400 of fun pulling it down and learning all the systems, so you get the bike

"for free!"


__________________________________________________
1986  K 75 C   2nd owner 187,000kms showing .
1987  K100RT  Police repainted, rough and unloved.
    

7Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Sat Jul 12, 2014 4:51 am

k-wopper

k-wopper
Silver member
Silver member
Welcome,
If you can restore a tractor you can re-build a K-bike. Hell, put a hitch on the back she'll plow a field and still race home at 100+.
No fear and all fun!
Rob

    

8Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Mon Jul 14, 2014 9:36 pm

HellFishTat

HellFishTat
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By my '91 k100 and ride it (see my ad)

    

9Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Sat Jul 19, 2014 7:17 pm

ETZ

ETZ
New member
New member
Hi, I've been working on getting an '86 K100 back on the road and it's suffered from lack of use.  I ended up needing to change the fuel pump (well, everything inside the tank actually) and spent the best part of a day scooping out assorted rubber goo from inside it.  I'm now spending some quality time down at the injector rail...  Still that's to be expected on a 28 year old bike with <13k on the clock.  Putting some modern unleaded petrol (inc. 5% ethanol) in a year ago to run the engine and then leaving it probably wasn't such a great idea either, with hindsight.

I wouldn't worry so much about the splines / transmission, I know this is a popular item for discussion but I've never had a problem with just greasing the rears.  Maybe I'm just lucky.

    

10Back to top Go down   Considering a 1988 K100RS Empty Re: Considering a 1988 K100RS Sat Jul 19, 2014 7:40 pm

walfish

walfish
Life time member
Life time member
On the front page of this forum is a heading "You've just bought a used K100, so what now", some helpful info there.

Keep in mind that grease will harden up in time, sod's law is you will find that out when furthest away from home.

 Considering a 1988 K100RS 22936


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Considering a 1988 K100RS Uk-log10
                            88 K75 S 0107569 (she's a keeper)
                            88 K 100  0033026 (gone)
   
                            92 K 1100 LT  6455097 (gone)
    

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