BMW K bikes (Bricks)

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1Back to top Go down   Timing light Empty Timing light on Fri Jun 07, 2019 6:42 pm

gabriel

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Hi

I purchased a timing light from cash converters in Australia and I’m not certain if I can use it to set the timing on my Bmw k100.
The unit does not have an advance timing adjuster, just the light unit, the unit which attaches to the number 1 spark plug lead and the positive and negative cords.
Any suggestions.
Thanks


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;BMW; 1984 BMW k100..frame number 6228?
    

2Back to top Go down   Timing light Empty Re: Timing light on Fri Jun 07, 2019 6:55 pm

duck

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There's really no need to use a timing light on a K.

I tried it years ago on a couple of Ks and discovered two things:

1) Unless you take the front wheel off it's very hard to get a good view in the Hall Effect Sensor area.

2) Lining up the notch on the side of the HES with the notch where it mounts sets the timing correctly.


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Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

3Back to top Go down   Timing light Empty Re: Timing light on Fri Jun 07, 2019 9:28 pm

RicK G

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Using a timing light is about as useful as tits on a frog. To get it any more accurate than lining up the notch you need a special dial gauge.
If you set the timing by the marks you would see it will run like crap because those marks are TDC marks and not base idle marks.
Timing light Hall_s11


__________________________________________________
"Every normal man must be tempted, at times, to spit upon his hands, hoist the black flag, and begin slitting throats."  from Mencken's 1919 Prejudices

Bikes 1993 K1100 LT, 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki X 2 for now
    

4Back to top Go down   Timing light Empty Re: Timing light on Fri Jun 07, 2019 11:41 pm

gabriel

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@duck wrote:There's really no need to use a timing light on a K.

I tried it years ago on a couple of Ks and discovered two things:

1) Unless you take the front wheel off it's very hard to get a good view in the Hall Effect Sensor area.

2) Lining up the notch on the side of the HES with the notch where it mounts sets the timing correctly.

Hi
You are right.
The timing light on a bmw k100 is about as useful as “tits on a bull” 
It was only $20.
Oh well, lesson learnt.
I tried turning the Hall effect transmitter clockwise.
I noticed a small increase in engine revs. Not much else.
All advice is appreciated.

Thanks


__________________________________________________
;BMW; 1984 BMW k100..frame number 6228?
    

5Back to top Go down   Timing light Empty Re: Timing light on Sat Jun 08, 2019 10:03 am

Point-Seven-five

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When I got my first K I spent a lot of time reading stuff posted on the interweb.  One of the things I saw was an article about advancing the timing something like 4-6 degrees.  There were articles about calculating what distance to rotate the plate and how it improved mid-range throttle response or something. 

I just set mine like the photo above.  As Duck mentioned, you can't see the timing marks unless the front wheel is removed, and with my old light, I would have had to remove the forks as well.


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Present:
1994 K75RT
1991 K100RS

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
    

6Back to top Go down   Timing light Empty Re: Timing light on Mon Jun 10, 2019 12:14 am

volador

volador
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active member
"BMW ON" Tech Tips circa Aug 1989

K100 cylinder#1,  K75 cylinder#3


http://forum.kforum-tech.com/members-upload/uploads/Ignition_Timing.pdf


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1984 K100RS  1991 K100RS
    

7Back to top Go down   Timing light Empty Re: Timing light on Mon Jun 10, 2019 7:09 am

Laitch

Laitch
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@Rick G wrote:Using a timing light is about as useful as tits on a frog.
@gabriel wrote:The timing light on a bmw k100 is about as useful as “tits on a bull”
Which are under discussion here—bullfrog or bull tits? I think either would have commercial potential on the Dark Web so they shouldn't be dismissed entirely.

If, someday, the engine is turns over but doesn't start, there's still the possibility that the light's inductive clamp could be attached around a plug wire and the light used to determine whether there is current going to the spark plug so the investment isn't a total loss. Who knows? Someday you might own a VW Microbus from the Sixties.


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1995 K75T 68,000 miles
Timing light Usa-lo10
    

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