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Old 03-29-2005, 18:02   #1 (permalink)
Bananaramma
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Where to find 4.0 Disco 2, dual fire spark plugs NGK BKR5EKPB



I just returned from my local Landy dealer who could not supply me
with replacement plugs (dual fire) for my Disco. Instead they carry
single fire Champion @ $16.00 canadian! Ouch!!!

There was some debate at the parts counter regarding the need for dual
fire. One partsman claimed a very obvious difference in acceleration
while another said there was nothing significant at all.
Any opinions as to should I, should I not replace with same NGK
BKR5EKPB, and where might I find them at a reasonable real world
price?. TIA



B
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Old 03-30-2005, 02:01   #2 (permalink)
Austin Shackles
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Re: Where to find 4.0 Disco 2, dual fire spark plugs NGK BKR5EKPB

On or around Tue, 29 Mar 2005 17:13:10 -0800, Bananaramma <milkdud@mo.org>
enlightened us thusly:

>
>
>I just returned from my local Landy dealer who could not supply me
>with replacement plugs (dual fire) for my Disco. Instead they carry
>single fire Champion @ $16.00 canadian! Ouch!!!
>
>There was some debate at the parts counter regarding the need for dual
>fire. One partsman claimed a very obvious difference in acceleration
>while another said there was nothing significant at all.
>Any opinions as to should I, should I not replace with same NGK
>BKR5EKPB, and where might I find them at a reasonable real world
>price?. TIA


I doubt there's a lot to be gained, provided the ignition is working
properly. You can get ones with 3 or even 4 electrodes, and I give you good
odds that they mostly only make 1 spark... About the only thing I can think
would make a difference is that micro-scale differences in the mixture might
mean that one or another spark-path is more viable, which could have a
fractional (and minimal) difference to the spark timing.



--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Remember that to change your mind and follow him who sets you right
is to be none the less free than you were before."
Marcus Aurelius Antoninus (121-180), from Meditations, VIII.16
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Old 03-30-2005, 13:02   #3 (permalink)
StaffBull
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Re: Where to find 4.0 Disco 2, dual fire spark plugs NGK BKR5EKPB

I have wondered about the function of "splitfire" or multi electrode plugs.
the HT is going to find the least resistive path through the air/fuel mix
and discharge through that - IMO it will not create a second or third spark
and intensity will be down to the HTV applied. better spending the cash on
leads, coil and dizzy IMO.





"Austin Shackles" <austinNOSPAM@ddol-las.net> wrote in message
news:f3qk4195lt58ukloop470c28digtivnuk7@4ax.com...
> On or around Tue, 29 Mar 2005 17:13:10 -0800, Bananaramma <milkdud@mo.org>
> enlightened us thusly:
>
>>
>>
>>I just returned from my local Landy dealer who could not supply me
>>with replacement plugs (dual fire) for my Disco. Instead they carry
>>single fire Champion @ $16.00 canadian! Ouch!!!
>>
>>There was some debate at the parts counter regarding the need for dual
>>fire. One partsman claimed a very obvious difference in acceleration
>>while another said there was nothing significant at all.
>>Any opinions as to should I, should I not replace with same NGK
>>BKR5EKPB, and where might I find them at a reasonable real world
>>price?. TIA

>
> I doubt there's a lot to be gained, provided the ignition is working
> properly. You can get ones with 3 or even 4 electrodes, and I give you
> good
> odds that they mostly only make 1 spark... About the only thing I can
> think
> would make a difference is that micro-scale differences in the mixture
> might
> mean that one or another spark-path is more viable, which could have a
> fractional (and minimal) difference to the spark timing.
>
>
>
> --
> Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
> "Remember that to change your mind and follow him who sets you right
> is to be none the less free than you were before."
> Marcus Aurelius Antoninus (121-180), from Meditations, VIII.16



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Old 03-31-2005, 01:02   #4 (permalink)
Austin Shackles
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Posts: n/a
Re: Where to find 4.0 Disco 2, dual fire spark plugs NGK BKR5EKPB

On or around Wed, 30 Mar 2005 21:27:49 +0100, "StaffBull"
<StaffBull@spamtrap.staffbull.net> enlightened us thusly:

>I have wondered about the function of "splitfire" or multi electrode plugs.
>the HT is going to find the least resistive path through the air/fuel mix
>and discharge through that - IMO it will not create a second or third spark
>and intensity will be down to the HTV applied. better spending the cash on
>leads, coil and dizzy IMO.


I did try 'em on something, made no discernible difference.
--
Austin Shackles. www.ddol-las.fsnet.co.uk my opinions are just that
"Festina Lente" (Hasten slowly) Suetonius (c.70-c.140) Augustus, 25
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