Iridiums for LPG County

[County4.4]

I am just about to put a new set of plugs in my dual fuel county.
Does any body know what part number of plugs I should be using ?

I am getting confused as several books list different numbers.

The coil has 14V to it with the ignition on motor off-does this mean I have the resistorless type coil?
Dizzy is a converted GM electronic type.
Thanks all.

[PAT303]

Having owned three petrol/gas vehicles I found the condition of the leads to be more important than the plugs.I never changed the plugs,I just used what was recomended. Pat

[bee utey]

I am just about to put a new set of plugs in my dual fuel county.
Does any body know what part number of plugs I should be using ?

I am getting confused as several books list different numbers.

The coil has 14V to it with the ignition on motor off-does this mean I have the resistorless type coil?
Dizzy is a converted GM electronic type.
Thanks all.

It's almost impossible to rate a coil by terminal voltage alone. The resistor in many cars is built in to the loom and as such will read full voltage until a load is applied to the end of said wire. To test for the presence of a resistor in the line to the coil, apply a 50watt load from say a spare spotlight to the terminal in question. Read the voltage, if it drops to below 10 volts you probably have a resistor or possibly crummy wiring.

A GM style electronic dissy should be fed without a resistor, and a suitable electronic coil fitted, i.e. one recommended by the manufacturer of the dissy.
As far as plugs are concerned, iridium won't make you car go faster, they simply last longer. My recommended plug is Bosch WR7DC+, you can also use NGK BPR6ES if you prefer. Gap 0.7 to 0.8mm max. There is also a double platinum LPG specific plug suitable for your car, Bosch part no. WR7KI33S.

Quite frankly I would rather fit standard type plugs as most Rover engines burn a little oil, so chucking them out at 20 to 30,000km is best as the insulators are looking crudded up.

[Tombie]

Quite frankly I would rather fit standard type plugs as most Rover engines burn a little oil, so chucking them out at 20 to 30,000km is best as the insulators are looking crudded up.

An issue I never had occur again after using Iridiums

[PhilipA]

I bought mine from Ebay
eBay Store - AEM Intakes: H R Springs, Denso Iridium Spark Plugs, NGK Spark Plugs

For my RRC I bought 8 x BPR5EIX-11 for approx USD 90 incl freight.
They also list BPR6 etc, so its up to you what you buy.
I am very happy with mine as they give a better idle than 25K old BP5ES that I had in and smoother cold start.
Regards Philip A.