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K100-forum.com » Technical, repair and troubleshooting » How to – Article from you telling others how to do a specific job » Timing light

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1Back to top Go down   Timing light Empty Timing light Sat Jun 08, 2019 7:42 am

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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1992 BMW K75s
    

2Back to top Go down   Timing light Empty Re: Timing light Sat Jun 08, 2019 7:55 am

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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3Back to top Go down   Timing light Empty Re: Timing light Sat Jun 08, 2019 10:28 am

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


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"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


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4Back to top Go down   Timing light Empty Re: Timing light Sat Jun 08, 2019 12:41 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


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;BMW; 1984 BMW k100..frame number 6228?
1992 BMW K75s
    

5Back to top Go down   Timing light Empty Re: Timing light Sat Jun 08, 2019 11:03 pm

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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Past:
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1982 Honda FT500
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1977 Honda XL125
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6Back to top Go down   Timing light Empty Re: Timing light Mon Jun 10, 2019 1:14 pm

volador

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"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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7Back to top Go down   Timing light Empty Re: Timing light Mon Jun 10, 2019 8:09 pm

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 K75 90,000 miles
    

8Back to top Go down   Timing light Empty Re: Timing light Thu Jun 20, 2019 8:50 pm

Poupy

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gabriel wrote:
I tried turning the Hall effect transmitter clockwise.
I noticed a small increase in engine revs. Not much else.

Have you done it engine turning?

As there is no high voltage at that level, it is safe to turn that platform by hand whilst the engine is turning, in order to find the highest idle rpm. That highest rpm indicates that the computer program answers at its best based on the informations it avails.

    

9Back to top Go down   Timing light Empty Re: Timing light Thu Jun 20, 2019 9:03 pm

Crazy Frog

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RicK G wrote:Using a timing light is about as useful as tits on a frog.
Thank you Rick. Timing light 44271


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10Back to top Go down   Timing light Empty Re: Timing light Thu Jun 20, 2019 9:29 pm

moriarti

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Same principal as rotating distributor on a car to find the (sweet spot)


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11Back to top Go down   Timing light Empty Re: Timing light Thu Jun 20, 2019 10:07 pm

Rick G

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Crazy Frog wrote:
RicK G wrote:Using a timing light is about as useful as tits on a frog.
Thank you Rick. Timing light 44271
:BW:


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1999 K1100 LT with a Big Block 1200
    

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