Keep the money in your pocket. These iridium plugs do not add anything
to your car and certainly not better combustion, more miles to the
gallon or more power. They just drain your wallet. Initially they will
improve matters, but that happens with any new set of plugs. I have
tried several times with various cars and the outcome is always the
same: No improvement beyond "just a set of new plugs".
Kees Oudesluijs
NL
Op 8-3-2013 1:11, Steve Gerow schreef:
> I measured the hole at 24mm - see homemade gauge:
>
> http://www.pbase.com/stevegerow/image/149102920
>
>
>
> Am looking at using 26.5mm Iridium sparkplugs: NGK LFR6 series or Denso
> IKH20 (aka 5344). The washer at 1.5mm takes the protrusion down to 1 mm into
> the combustion chamber. There is 29mm of room between the spark plug face
> and the top of the piston at the bottom of the spark plug hole.
>
>
>
> I see these plugs are used in many turbo & normal cars and boat engines.
> They are pricy but might add up to a slight performance increase from better
> combustion. Do they require an HEI ignition?
>
>
>
> Has anyone tried these plugs.
>
>
>
>
>
> --
>
>
>
> Steve Gerow
>
> Altadena, CA, USA
>
> BN6
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--
Kees Oudesluijs
Dorpsstraat 183
2995XG Heerjansdam
T: 078-677 1233
E: coudesluijs@chello.nl
Technische commissie Jensen Healey en GT
Het Jensen Genootschap Holland
www.jensenholland.nl
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