Spark plug for an S1 Eclat?

[soldave]

Looking for the right spark plug for my S1 Eclat.  NGK state on their UK site that a BP6E is the right one (gapped to 0.6mm from the stock 0.7mm), but the NGK US site advises a BPR6ES plug for a '79 Eclat.

 

Which is the best one to go for?

Edited October 13, 2014 by soldave

[Dunc]

http://www.thelotusforums.com/forums/topic/68193-which-sparkplug/

[soldave]

http://www.thelotusforums.com/forums/topic/68193-which-sparkplug/

Thanks.  Was wondering if it was different from the Esprit or not.  Although with the engine being different, probably not!

[Dunc]

The engine (give or take a few inconsequential items) - on a same year basis - matches across the Eclat-Elite-Esprit.

[johnpwalsh]

Hi Dunc, I first ran the Old Eclat on BP 6 E's but after the rebuild I found she ran better on the BPR 6 ES plugs