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MG Midget and Sprite Technical - Plugs for 948 Engine

I have been to the archive - honest - but everybody seems to have larger engines.
What's the current recommendation?
Nick and Cherry Scoop

BP6ES if it's fairly std and you're not driving the daylights out of it'
If it's a hotty or you're going to give it a hard time-BP7ES
William Revit

What Willy says.

They are NGK designations, of course.
Dave O'Neill 2

I used Champion NY9C in the original well-modified 948 engine, and they ran with no problems over many years and ~50,000 miles - NGK equivalent = BP6ES!

Now run BP7ES in the 1380, and again no problems for ~60,000 miles.

Richard

N.B. I do change the plugs occasionally!
Richard Wale

Thank you very much. The plugs that came out were NGK BP5E, and I have four new Accuspark plugs AC9C - can't remember where they came from.
It seems from what you say that BP5E might be a bit too hot.
Nick and Cherry Scoop


5's would be ok for short runs and town driving, winter running etc
NGK plugs are very generous in their heat ranges and seem to overlap a bit in specs, so with them they are sort of forgiving if you get the heatrange wrong but BP6ES would be best allround choice

If you already have 4 new AC9C acuspark I would run with them
William Revit

Thanks, Willy.
Nick and Cherry Scoop

This thread was discussed between 06/06/2018 and 07/06/2018

MG Midget and Sprite Technical index

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