Presto wrote: ↑Mon Sep 21, 2020 9:52 am
I wasn’t able to find either BPR6ES or BPR5ES on our hosts website.
I did see the iridium version but that wasn't the number on the Amazon link.
My ‘bad’ if they are. But if they are can you tell me where?
They do stock the iridium version of the "6" but not the two ordinary copper versions I mentioned originally (which you repeat above) as you've discovered, a point I'd made earlier.
https://accessories.hitchcocksmotorcycl ... dium/32717
However your earlier comment that just because they don't stock them, this must mean they are unsuitable is frankly, nonsense. I don't know why Hitchcocks don't stock them but it cannot be because they are unsuitable. Depending which equivalency table you consult the NGK's I mentioned are the direct equivalents of the Bosch India fitted originally to the latest UCE bikes, the 5 being hotter than the 6. And as they do stock the iridium version of the 6 plug the copper one cannot be unsuitable as it is the same size, heat rating etc.
In practice, equivalent plugs are never going to be absolutely identical but they are way more than good enough for our Enfield purposes. I dunno about you but I'd rather run NGK plugs and cap than Bosch India. Admittedly in the few hundred miles I ran with the Bosch from new there were no problems but many owners do report trouble. Consequently there is nothing to lose by fitting NGK and everything potentially to gain.
And by the way, Hitchcocks sell the Bosch India plugs which are reputedly troublesome!