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1979 MK 2 ignition CDI.... Plug gap 30 or 40 Thou ?????

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johny brando
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1979 MK 2 ignition CDI.... Plug gap 30 or 40 Thou ?????

#1 PostAuthor: johny brando » Fri Apr 08, 2016 8:00 am

Thanks to good info received on here on the Forum, I'm just about to run new BR8EiX Iridium plugs in my 900 which I'm running MK2 Ignition on & there appears to be some confusion within my 2 Clymer manuals...... one say's 30 thou plug gap & the other says 40-44 thou ????? anyone have a genuine MK 2 shop manual to hand ? It'a std UK spec 1979 CDI package & like i said gunna now use Iridum Plugs...they appear to be generically factory gapped @ 30 thou but if thats wrong .....I'll have very carefully re-gap them ....as they look a bit delicate compared to normal plugs ! Cheers.
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zed1015
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#2 PostAuthor: zed1015 » Fri Apr 08, 2016 8:39 am

Leave the gaps at 30 thou (0.75mm).
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#3 PostAuthor: Pigford » Fri Apr 08, 2016 11:02 am

If you're running Denso Iridium plugs, you can go to 8.0mm... they're real good :twisted:
And on the 7th day... Zeds were created!
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#4 PostAuthor: chrisu » Fri Apr 08, 2016 5:14 pm

8mm Mark - are you sure..................??

:D
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#5 PostAuthor: Pigford » Fri Apr 08, 2016 5:20 pm

chrisu wrote:8mm Mark - are you sure..................??

:D


:oops: No, not sure.... probably 0.8mm :lol:
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zed1015
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#6 PostAuthor: zed1015 » Fri Apr 08, 2016 5:55 pm

Pigford wrote:
chrisu wrote:8mm Mark - are you sure..................??

:D


:oops: No, not sure.... probably 0.8mm :lol:


Just leave them resting on the head and if it drops on to three you can spot the culprit without even stopping :lol:
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#7 PostAuthor: Gus » Fri Apr 08, 2016 6:15 pm

zed1015 wrote:
Just leave them resting on the head and if it drops on to three you can spot the culprit without even stopping :lol:


Nice one

Laughed my little botty off :lol:
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johny brando
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Re: 1979 MK 2 ignition CDI.... Plug gap 30 or 40 Thou ?????

#8 PostAuthor: johny brando » Fri Apr 08, 2016 9:58 pm

johny brando wrote:Thanks to good info received on here on the Forum, I'm just about to run new BR8EiX Iridium plugs in my 900 which I'm running MK2 Ignition on & there appears to be some confusion within my 2 Clymer manuals...... one say's 30 thou plug gap & the other says 40-44 thou ????? anyone have a genuine MK 2 shop manual to hand ? It'a std UK spec 1979 CDI package & like i said gunna now use Iridum Plugs...they appear to be generically factory gapped @ 30 thou but if thats wrong .....I'll have very carefully re-gap them ....as they look a bit delicate compared to normal plugs ! Cheers.


THANK YOU very much guy's appreciate all the replies !!!! 30 Thou it is then .........yeh 320 might be a Tad over kill !
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