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Rb26 Plugs & Heat Rateings

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Hi all,

I'm new to this forum, but have had my R33 GTR for around 8 years now.

Been down the same track as most of us have gone down. More boost, gasket fail and a rebuild with all the norm goodies, forge pistons new Tommie water pump and water pump, extended sump GTSS = 330KW ATW.

I was always one to change my own oil, change plugs and alike. Don't get me wrong I am no a grade mechanic but happy to keep cost down and a bit of hands on is always good.

Anyway, along the road I have come across a few tuners/workshops that would like to take on all the aspects of the car.

I got my car serviced and ready to take it way for the weekend and a good thump out of town. As soon as I put my foot into the car it started missing. I thought plugs, but it was not that long ago that I had them changed. I remembered that I had a set of plugs in the draw from when my car was running 260kw with stock turbos. I remember when I had the car original tuned seven years ago the tuner advised that a BCPR6ES was OK for my car on the street but I would need a BCPR7ES if I was to add more boost.

I found the plugs BCPR6ES so I started taking all the plugs out & they did not look to bad. At a closer inspection they were a part number that I did not recognize BKR6E. I put my plugs in and the car is running fine.

Sorry for elaborating for so long, my question is,

BCPR6ES is ok at low boost due to heat rating?

BCPR7ES high boost, track due to heat rating?

BKR6E is for a RB25 not a RB26?


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