NGK Long reach sprk plug

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EGG80X
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NGK Long reach sprk plug

Postby EGG80X » Sun Feb 24, 2008 10:49 am

Has anyone try NGK ZFR6F-11 long reach spark plug?

I'm worry it might hit the piston....
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green_comet
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Postby green_comet » Sun Feb 24, 2008 11:02 am

They sell these on MX5parts website, they are supposed to be pretty good too. I dont think they would sell them if they hit the pistons.

http://www.mx5parts.co.uk/product_info.php/products_id/470

:D
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EGG80X
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Postby EGG80X » Sun Feb 24, 2008 11:07 am

true, i got a set here ready to intall
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TieNN89
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Postby TieNN89 » Sun Feb 24, 2008 11:59 am

whats the benefits having long reach plugs?
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green_comet
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Postby green_comet » Sun Feb 24, 2008 1:00 pm

'Supposed' to give a slight improvement in power by placing the spark slightly further down in the cylinder.
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Steampunk
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Postby Steampunk » Sun Feb 24, 2008 8:04 pm

Hmmm.... never heard that one before GC. But then again, it's was confirmed by respected lab tests that having all the ground electrodes on all plugs facing the same way gives more power.... but we are talking like 1% at the most, but hey, it's free power.
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EGG80X
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Re:

Postby EGG80X » Sun Feb 24, 2008 9:10 pm

1red5 wrote:Hmmm.... never heard that one before GC. But then again, it's was confirmed by respected lab tests that having all the ground electrodes on all plugs facing the same way gives more power.... but we are talking like 1% at the most, but hey, it's free power.



it also adds more compression
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Steampunk
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Postby Steampunk » Mon Feb 25, 2008 9:20 am

Hmmm.... makes sense in theory.... but then again, carbon deposit build-up also adds compression.

I don't mean to be argumentative, but would there also be a danger of pre-igntion? I guess even if there is, you can go for a long-reach & colder spec plug.
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