BMW K bikes (Bricks)


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1Back to top Go down   No smoke on side stand?! Empty No smoke on side stand?! Tue Oct 16, 2018 4:04 am

nino

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Hello, few days ago I changed oil 10 w 40 out, 5 w 30 in. Miracle happened. With that lighter oil which is better for winter cold start I didnt noticed smoky start at all, even the bike was on side stand all the time.
Anybody with similar experience?

    

2Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Tue Oct 16, 2018 11:05 am

Dai

Dai
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Life time member
I use 20-50w mineral oil (dinosaur pee!); LFB doesn't always smoke when left on the sidestand and sometimes smokes when left on the mainstand!


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Tue Oct 16, 2018 6:54 pm

robmack

robmack
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Life time member
I have always used Mobil 1 15W50 and always had smoke when stored on the sidestand. I never tried a lighter weight oil nor a dino based product.

Is the oil you used dino or synth?


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
http://k75retro.blogspot.ca/
    

4Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Tue Oct 16, 2018 7:47 pm

Two Wheels Better

Two Wheels Better
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Whether purging the motor with cheap diesel detergent mineral oil on occasion or springing for full bore fully synthetic in my Bricks, I've not had an issue with smoking upon start up. Then again, most of these bikes are old enough to smoke. No smoke on side stand?! 652573

Seriously, the only K I've ever owned that regularly took care of the local mozzie population was my '87 K75.


__________________________________________________
1977 R75/7-100, '93 K11/K12 Big Block, '95 R100 Mystic, '96 K1100RS, '98 K1200RS, '06 K1200R & '09 K1300GT. Projects: 1993 & '96 K1100RS, & 1st '98 K1200RS.
The Mystic, Big Block, 2nd K1200RS, K12R & K13 are running & ridable.
    

5Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Wed Oct 17, 2018 4:53 am

charlie99

charlie99
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nino wrote:Hello, few days ago I changed oil 10 w 40 out, 5 w 30 in. Miracle happened. With that lighter oil which is better for winter cold start I didnt noticed smoky start at all, even the bike was on side stand all the time.
Anybody with similar experience?



wow !!!  good to hear nino


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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 )
    

6Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Wed Oct 17, 2018 5:55 am

jbt

jbt
Life time member
Life time member
5W30 is really too fluid for your engine.  Expect quick wear because of too low oil pressure and a film oil that won't stick to the parts. This kind of oil is designed to be used with a specific lubrication system with a pump that gives much more pressure, and oil lines diameter that are reduced to keep that pressure.
There's no need to use such a low grade, as a 10w40 can cope from -20°C. Do you really expect to ride under these temperatures or even start your bike?

For your non smoke problems on the side stand, the piston segments were modified in february 1988 to convert the oil segment to a labyrinthic version. Yet, as segments are turning around the piston when the engine runs, it may happen that all the extremities of the segments are in line, facing backwards when you stop it. Then it allows oil to pass in the combustion chambers, and the more the segments are worn, the more oil can pass.

    

7Back to top Go down   No smoke on side stand?! Empty Re: No smoke on side stand?! Wed Oct 17, 2018 5:59 am

nobbylon

nobbylon
Silver member
Silver member
I had minor weeps from my RS but after putting 20w50 mineral in it, it appears to have stopped. Same with the box and bevel, using mineral 80w90 GL5. Previous owner had been using synthetics.
Yes it smokes a little after sitting on the side stand but better that than a leak with thin synthetics.
My 83 K100 really smokes after side stand use, same 20w50 again but it clears after a mile or so. Both engines use no oil.
I am going to try them on Shell AX7 15w50 semi as I use it in the GS and Dakar and it’s cheap.


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R1100GS Feb 1995
K100RS July 1989
R90s June 1975
R75/6 Feb 1976
F650GD May 2001
    

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