BMW K bikes (Bricks)

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1Back to top Go down    Spark plug high tension leads on Sun Jul 15, 2018 3:02 pm

nods

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Hi guys,

Do these leads 'wear out'/break down over time? Or can I measure their resistance to test somehow?

Just wondering if I'll need to replace the originals on my bike.

Cheers,
Nods


__________________________________________________
Chassis number0025951
Vehicle code0504
SeriesK589
ModelK 100 RT 84 (0504 ( 0505 )
Body typeK 100 RT 84 (0504
Catalog modelECE
Production date1985 / 01
Engine0514)
Transmission
Steering
CatalyzerNONE
    

2Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 4:49 pm

robmack

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Search brought up this page: http://www.k100-forum.com/t589-spark-plugs-and-ignition-wires

If the wires aren't giving you problems at the moment, don't fix them.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
http://k75retro.blogspot.ca/
    

3Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 10:52 pm

MartinW

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My Brick has been fitted with NGK resistor caps and leads for the last twenty years. A mate's auto electrician son got another two sets about 10 years ago for I believe $70.00 a set. I have a set as spare, but never needed so far.

Heed the warnings on fitting non resistor caps leads and plugs. I had a local ex BM tech tell me I should also run resistor plugs in conjunction with resistor leads. I gave it a go for one set and it didn't make any difference in the bikes running or in the colour of the plugs. So I am back on non resistor NGK plugs. Rob may help with why he suggested this approach.

There are two types of NGK caps applicable to the Brick a 90 deg and a 45 deg angle. In OZ I can't run Bosch plugs due to the fact that they are not available with the screw off end caps, which NGK leads require. I've had no problems with NGK plugs.

Regards Martin


__________________________________________________
K75s Hybrid
    

4Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 11:02 pm

MartinW

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I just thought I would add this. A mate with four bricks has had trouble removing OEM leads. The metal caps had corroded onto the spark plugs and the plugs and caps were destroyed on removal. Has this been a problem for any other inmates.
Regards Martin.


__________________________________________________
K75s Hybrid
    

5Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 11:05 pm

nods

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Thanks a lot Rob and Martin 👍

Sent from Topic'it App


__________________________________________________
Chassis number0025951
Vehicle code0504
SeriesK589
ModelK 100 RT 84 (0504 ( 0505 )
Body typeK 100 RT 84 (0504
Catalog modelECE
Production date1985 / 01
Engine0514)
Transmission
Steering
CatalyzerNONE
    

6Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 11:44 pm

robmack

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Life time member
Life time member
@MartinW wrote:... Rob may help with why he suggested this approach.
Sorry Martin. I didn't make any suggestions. I pointed nods to an existing page on K100-forum with answers to his question. I wouldn't recommend running resistor-caps and resistor-plugs either.

@MartinW wrote: Has this been a problem for any other inmates.
I've never encountered corroded caps or difficulty removing/installing them on any of the Bricks I've owned or helped with.


__________________________________________________
Robert
1987 K75 @k75retro.blogspot.ca
2011 Moto Guzzi V7 Racer
http://k75retro.blogspot.ca/
    

7Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 11:46 pm

duck

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Isn't there a recommended resistance range where the K100 plug leads are still good?


__________________________________________________
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
    

8Back to top Go down    Re: Spark plug high tension leads on Sun Jul 15, 2018 11:59 pm

MartinW

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Thanks Rob on two of the mates plugs the only way he was able to get the leads off was to actually break the porcelain on the plugs. I don't think was able to ever get the remains of the plug out of the cap. The bike was running but the caps were badly corroded.
Regards Martin.


__________________________________________________
K75s Hybrid
    

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