Interesting,
Do you have a methodology for gapping the iridiums vs the OEM Spec coppers? Obviously it's a larger gap - but by how much?
Spark plugs
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- Phantasm
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Re: Spark plugs
-Bill
1991-92ish Lotus Excel SE Silk Red
2009 Jeep Wrangler X Unlimited 4X4
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1991-92ish Lotus Excel SE Silk Red
2009 Jeep Wrangler X Unlimited 4X4
2015.5 Volvo V60 T5
Previous: 2005 Toyota Prius, 2002 Nissan Maxima SE 6 speed, 1988 Toyota 4Runner, 1989 Toyota 4Runner, 1995 Dodge Neon, 1986 Ford Mustang
- fueltheburn
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Re: Spark plugs
LC engines bpr6es = 0.8mm
HC engine bpr7es = 0.9 mm
Iridium plugs = 1.0mm
45Kv coil and iridiums= 1.1mm
Kind of an experience thing. Every engine is different as it depends on state of tune and condition of ignition components.
Give those plugs a tweak, if they like it great, if not put it back.
You only know you have gone too far by pushing boundaries.
Once I have sorted coil on plug I will be aiming for 1.2mm.
HC engine bpr7es = 0.9 mm
Iridium plugs = 1.0mm
45Kv coil and iridiums= 1.1mm
Kind of an experience thing. Every engine is different as it depends on state of tune and condition of ignition components.
Give those plugs a tweak, if they like it great, if not put it back.
You only know you have gone too far by pushing boundaries.
Once I have sorted coil on plug I will be aiming for 1.2mm.
- Hawaiis0
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- Model: Excel SA (No 3); Elite 504
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Re: Spark plugs
Iridiums fitted - have no idea if they made the difference, but I think the glorious weather did more to improve things . Fresh diff oil might have helped too
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