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Spark Plug Change

Old 20 April 2014, 12:13 PM
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Inviroman
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Default Spark Plug Change

Only fitted the originals PFR6B about 2k ago and from reading and that now running more power than standard fitted some PFR7B and what a difference, smoother idle and more aggressive on boost, why would spark plugs make sutch a difference?
Know the 7's are colder plug would like to understand this.
Done the same on pals car and has reported back the same result.
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Old 20 April 2014, 01:11 PM
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JohnD
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Shouldn't really feel much difference. Placebo effect? Did you re-set the gap to 0.65mm on the new plugs? Prefered if you are running above standard boost level.

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Old 20 April 2014, 02:01 PM
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Set to 0.70mm which is in the middle from the research done, some say .65 some say .75 so went for in between, the plugs out of the box was .80 and .75
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Old 21 April 2014, 10:37 PM
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From what I understand...
The colder plugs help prevent pre spark (det) especially at higher boost and power levels when combustion temp tend to get rather high.

Definately made a difference in the higher rev range of mine, (seemed stronger somehow.) It went bang 300 miles later...
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Old 23 April 2014, 08:33 PM
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Originally Posted by DantheMan2605 View Post
From what I understand...
The colder plugs help prevent pre spark (det) especially at higher boost and power levels when combustion temp tend to get rather high.

Definately made a difference in the higher rev range of mine, (seemed stronger somehow.) It went bang 300 miles later...
Cheers Dan, hope this does not put a curse on mine!
How is yours coming along?
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Old 24 April 2014, 04:47 PM
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Originally Posted by Inviroman View Post

How is yours coming along?
It's about time Dan did a project thread / general update!
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Old 25 April 2014, 11:49 AM
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Originally Posted by romford-boy View Post
It's about time Dan did a project thread / general update!
Project thread:

Bought car, it went bang, repaired it, it went bang...
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Old 25 April 2014, 12:03 PM
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Originally Posted by DantheMan2605 View Post
Project thread:

Bought car, it went bang, repaired it, it went bang...

That summarised that very well
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Old 25 April 2014, 12:05 PM
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Originally Posted by DantheMan2605 View Post
Project thread:

Bought car, it went bang, repaired it, it went bang...
It's the .... part we want to know about!
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