AH 3000 sparkplugs

Evening folks

Quick and dirty question.... (couldn't find anything on the "search" option). Picked up some sparkplugs for my 3000, and purchased NGK BPR 6ES. Then I did a bit of research after the fact and people were making a distinction between hot and cold plugs. I don't race the car and sadly don't put on many miles annually. In your experience are these appropriate, and will they do? Seems from memory, that's what I'm now running, without a problem, but a sober second opinion never hurts...

I recall that the workshop manual specifies Champion, but have never used them.

thanks lads.

DB

Pretty much all I've ever used is BP6ES and they perform very well. I think the R stands for 'resistor' for radio noise suppression but I don't have a radio....
Dave

The number is heat range: 5-hotter; 6-the usual setup; 7-cold for racers.

It's not good to stack resistances: wires, end caps and plugs can all have resistance. I try to avoid it with non-R plugs, metal wires and plain rubber caps. My only radio is the tinnitus in my left ear and the Healey exhaust note in my right ear.

6s should be Ok but if you do experience a little oiling then switch to 5s. 7s are too cold.

I'm the odd man out I like Bosch Platinum WR7DP, they are resistor plugs too

Keoke. Some companies have a different numbering system where lower numbers are colder.

I have Champion resistor plugs in mine, but the NGKs are just fine. I also have bumblebee wire with no resistance.

Champion and Bosch use lower numbers for colder plugs. NGK and Denso use higher for colder. Autolite apparently has a system all its own.

BP6ES for as long as I can remember (less than a month away from thirty-nine years with BN6L/942).

A couple, okay, three decades ago, I lived in the perfect place to do plug-cuts; I could come down the highway__2-lane rural__at practically any speed/gear/RPM that I wanted, cut the engine, put it in neutral and coast up to the shop (a one time old service station/honky tonk in Poche' Bridge, Louisiana). I had just put the 45 DCOE Webers on it, and following the course of testing and tuning the air/fuel mixture, I also experiments with #5 & #7 plugs. In a nutshell, the #6s were it; 7s might be preferred for hot laps at Sebring, but for 99% of the driving most of us do (Dougie, Derek & Richard being possible exceptions) the NGK BP6ES is my go to plug (they stay cleaner than Champions too; what was that, an N12Y??)/

Champions available now are RN12YC; R=Resistor (about 15KOhms, I believe), C=Copper (core).

Sounds like the BP6ES might run just a bit hotter than the Champions. I once had a Subaru that ran BP6ES, and my engine builder likes NGK.