Hi a preious post had me thinking about which are the best spark plugs to have now I am running JWT and more boost.See I recently fitted a new set at a so called special offer from Nissan B.ham for £43 they are PFR6B 11C now there seems some variation of opinion,the workshop manual lists these as "hot" does any one know for sure as if they need changing I will...Help Jeff TT

i put these in and i havent had a days problem since, i had pfr6-11b in and kept burning them for some reason.

 

i personally have had no probs with pfr6-11c so i am sticking to those.

Jeff, personally i wouln't cos when you start tweaking and tuning you should fit colder plugs, i fitted the HKS ones, expensive like and i think they are 8s, at least try 7s. Did a lot of experiments years ago on the S12, on a highly tuned one it would only do well on 8s, anything less and it always burnt a plug out,think it all depends on your level of tuning as to how hot things get down there, Smithy

Jeez guys crystal clear now any more views? seriously, thanks for any input

should be able to get a series of best for each mods reccomendation then,

 

Jeff TT