7 replies to this topic

[ECG317W]

Hi,

Which spark plugs do I need for a 1960 Mini (Austin Seven) 850cc?

Cheers

Ben

[jaydee]

NGK BP05ES
Champion N12Y

[Sherlock]

Mine had Champion N-5's

[ECG317W]

So does it make much difference? At the moment it's not running quite right, and I thought it was the plugs. But I guess maybe I should check the timing etc...

[jaydee]

What colour are the plugs?

[madaboutcherry]

champion n9y

[dklawson]

Or an alternative to the Champion N9Y, NGK BP6ES.

The description "not running right" is wide open. While it certainly may be the plugs, it could be almost anything. A general tune up and inspection is in order before you start replacing parts.

Start by setting the valve clearances with the engine cold.
Then remove the ignition points, file/dress them and put them back in... setting their gap correctly.
Consider replacing the condenser with a new one... just because they are cheap and can create many types of running problems when they fail. (Save the old one just in case... and carry it in the boot as a spare).
While the dizzy cap is off, inspect the cap itself and the rotor. Look for any cracks or carbon tracks. If either are found on either part, replace the suspect component.
Look at the spark plug wires. If the insulation is old, dry, and cracked, replace the wires.
Check the spark plugs themselves for obvious problems like cracked insulators or severely worn electrodes. Replace if either condition is found. If the plugs are oil or carbon fouled, you could have problems outside the ignition system that are creating the problem.
If you decide to clean the plugs, do not be tempted to wire brush them.

Regardless, you can check a lot of these components as part of a general tune up and replace only those items that have obvious problems.

[ECG317W]

Thanks for all the info. Will definitely spend a few days on it over the xmas period. Its such a beautiful car, must get some pictures on here at some point.