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PostPosted: Mon Dec 11, 2017 4:00 pm 
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Drives: Electric C1
The hotter the combustion in the cylinder the higher the plug temp requirements. If you suffer from constant carbon deposits (ie running rich) running a slightly hotter plug can sometimes give a cleaner plug. Since its a std car with no mods just use the nearest to original specification.


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PostPosted: Mon Dec 11, 2017 8:56 pm 
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Drives: Citroen C1 13'
grumpy-b wrote:
The hotter the combustion in the cylinder the higher the plug temp requirements. If you suffer from constant carbon deposits (ie running rich) running a slightly hotter plug can sometimes give a cleaner plug. Since its a std car with no mods just use the nearest to original specification.


Thanks so much! The problem is denso's website says both K20HR-U11 and KH16TT. Here are the links for that info:
http://www.globaldenso.com/cgi-bin/glob ... xt&no=1898
http://www.globaldenso.com/cgi-bin/glob ... ame=&FF=50

Also, the gap on the KHTT's is 1.0, and not 1.1, will it be ok? A Denso representative said it should be fine but I preferred to ask here to make sure.

Thanks again,

Samuel


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PostPosted: Tue Dec 12, 2017 9:45 am 
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Look again at your links they both suggest K16HR-U11
.1 of a mm isnt going to make any difference and since they arrive ready gapped, you will never get them closer in consistency if you try and re gap them.


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PostPosted: Tue Dec 12, 2017 8:42 pm 
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Drives: Citroen C1 13'
grumpy-b wrote:
Look again at your links they both suggest K16HR-U11
.1 of a mm isnt going to make any difference and since they arrive ready gapped, you will never get them closer in consistency if you try and re gap them.


You are absolutely correct. Here it is:
http://www.globaldenso.com/en/products/ ... /06_5.html

Thanks for your precious time!


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PostPosted: Sat Dec 16, 2017 4:36 pm 
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Joined: Sun Aug 30, 2015 9:47 pm
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Location: UK,Norfolk
Drives: MK7 fiesta metal
Brisk do a set of iridium plugs the , Brisk Iridium Premium+ Spark Plugs P3 (1621)

They come with the correct size gap, and seemed to improve acceleration and fuel economy.

_________________
2012 Ford Fiesta metal edition
* Superchips Remap
* Pumaspeed induction hose and Pipercross filter
* Formula Power HT leads and Brisk silver spark plugs


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PostPosted: Sun Dec 17, 2017 2:22 am 
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Drives: 2006 C1
This young man has started another thread about his spark plugs. It's hard to keep up with him


Sent from my iPhone using Tapatalk


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PostPosted: Mon Dec 25, 2017 7:45 pm 
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so are my plugs still good to go?
Attachment:
plug.jpg
plug.jpg [ 720.97 KiB | Viewed 371 times ]


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PostPosted: Sat Jan 06, 2018 9:07 pm 
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Joined: Mon Jan 30, 2012 7:49 pm
Posts: 121
Drives: Aygo 2008
Denso kh16 tt is hotter than kh20 tt. Use 16 tt if you have problem with sooty spark plugs. I have changed from originals to kh20tt quite a few years ago and it is running fine. The tightening torque figure is 22Nm. It should last at least 60000 km.


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