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Author sparkplugs.
dan_c4rsa
Member
Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline
9th Sep 07 at 20:51   View User's Profile U2U Member Reply With Quote
Double or single headers?

Having an argument with someone about whats better.

I think doubles are good, and perform well.

My oppositiong says singles last longer, better value and give just as much effectiveness.
Jake
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Registered: 24th Jan 05
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9th Sep 07 at 20:52   View User's Profile U2U Member Reply With Quote
I bought champion single electrode, they were 5quid more expensive and the engine didnt start as good as with twin ngk's
phil_sutton
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Registered: 8th Sep 07
Location: Nottingham
User status: Offline
9th Sep 07 at 20:53   View User's Profile U2U Member Reply With Quote
I use singles in mine, normally the other way round, the doubles for triple ect... will give longer life. I think.
Robin
Premium Member

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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
9th Sep 07 at 20:56   View Garage View User's Profile U2U Member Reply With Quote
you only get one spark whether there's 2,3,4,6,123,7623432 or 127381928 electrodes as it will only arc from one at a time.

ones with more electrodes should last longer though.
dan_c4rsa
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Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
User status: Offline
9th Sep 07 at 20:57   View User's Profile U2U Member Reply With Quote
oh and also.

slightly black plugs = overfuelling or tired plugs?
willhouse
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Registered: 11th Jul 06
Location: Sheffield
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9th Sep 07 at 22:04   View User's Profile U2U Member Reply With Quote
you either pay £5 for plugs or £90 for plugs as anything inbetween is no better than the cheap ones.

extensive tests at the wizards of nos proved that the best plugs are the cheap NGK's from halfords in the blue packets. and the better ones than those are getting in to expensive Denso's etc.

and Robin is correct, no matter how many electrodes you have, there will only ever be one spark. More elecrodes are added to make the plug electrodes last longer as the load is spread. Also you cannot gap mulit electrodes which is a problem on alot of performance cars
willhouse
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Registered: 11th Jul 06
Location: Sheffield
User status: Offline
9th Sep 07 at 22:05   View User's Profile U2U Member Reply With Quote
and slightly black plugs- which bit of the plug is black?
Fad
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Registered: 1st Feb 01
Location: Dartford Kent Drives: 330cd
User status: Offline
9th Sep 07 at 22:07   View User's Profile U2U Member Reply With Quote
Just buy vaux ones which are ngk but cheaper?
willhouse
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Registered: 11th Jul 06
Location: Sheffield
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9th Sep 07 at 22:09   View User's Profile U2U Member Reply With Quote
the vaux ones are generally 2 electrodes which can be a bit crap Fad, as said, the blue NGK's are definitely the best for the money, ive tride numerous sets and Trevor at Wizards swears by them
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
User status: Offline
9th Sep 07 at 22:20   View User's Profile U2U Member Reply With Quote
Just buy whats right for the car in NGK flavour.

 
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