Alternative spark plug brand to NGK7ECS

[jazzdude]

I cant get the NGK7ECS out here as no one carries stock of this type of plug.

Before I resort to buying them online with shipping costs, is there an alternative plug in another brand that also works well in our cars?

[jazzdude]

I had a quick read on these ngk bpr6eix plugs and a few on here are singing their praises. But it seems that on top of the cost of the plugs you also need heat shielding and little boots too, as you dont need the extenders, or am I misunderstanding this.

This then more or less doubles the cost of these plugs and I wonder if they are indeed that much worth the extra cost over the normal type.

However, there are discussions of some using NGK's BPR6ES or BPR7ES. If these are easy to find here should I just use these?

[jazzdude]

Just to be clear, if I use a spark plug with a resistor I can still use the extenders or do I have to remove them and put boots?

[jazzdude]

The car is a 95 400hc with over 100k miles on it. Daily driver in a nice warm Mediterranean climate, not going to be tracked or driven hard extensively. New original spec hc cam, act decatted, act induction carbon trumpet plenum, otherwise standard. Expect to do about 6k miles per year.

Does that help?

[jazzdude]

And between the two would the resistive ones be first choice?

[jazzdude]

I have fitted the new leads, new spark plugs and have taken off the extenders, anf fitted heat sleeves over the cables.

The cables have also been positioned so that they are well away from the manifolds and the car is runnng fine and much more smoothly.

Driving it around today, the temperature in town was well over 90 and the fans did not come on by themselves until around 98, and then switched off at about 92. Luckily I have a fan overide switch but even with the fans full on the temperature in traffic did not come down lower than about 90.

Is there a connection to this change and the temperature with these different sparks?

[jazzdude]

They both are, just quite late.

[jazzdude]

I have the software, I'll get it set up and then I will see how the guage corresponds to the actual temperature.