spark plugs

[skates]

what are the best plugs for my robin?

[digger06]

ngk or similar, iridium are possibly better but its a low revving engine, cant see a performance difference, maybe last longer though?

[Tony oily bike]

Have used NGK on bikes for years and rate them highly.

Iridium tipped are costly but are great if the original plugs have a tendancy to foul (which itself is an idication of something being not too healthy somewhere else!)

Ensure you get the right ratings tho.

[skates]

`wots the size???

[terry t]

`wots the size???

if you look in. General Tec section under. reliant service items.it has a list of them.
if not type spark plug in the search bar

[fifer]

The following is a wee list of NGK spark plugs and their alternatives

https://sites.google.com/site/fifersrelianthintsandtips/spark-plugs/spark-plug-alternatives

Have a look at the NGK spark plug code at
http://www.spark-plugs.co.uk/pages/technical/ngkjpg.htm
Basically

" B " is the standard 14mm plug thread size for the Reliant engine with a 20.8mm hex for the plug socket / spanner to go on
If the " B " is followed by a " C " then that is the standard 14mm plug thread size for the Reliant engine with a smaller 16mm hex for the plug socket / spanner to go on { Looks much neater and makes it easier to remove the number 2 spark plug next to the distributor }
" E " is the thread reach of 19mm into the head
" S " is the standard super copper core electrode

You can pick from the following
NGK { Or alternatives }
BP5ES
BP5EV
BP6ES
BP6EV
Or , even better with the smaller hex
BCP5ES
BCP5EV
BCP6ES
BCP6EV
I normally run on " 5 " but each engine is different .
Just suck it and see .

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