View Full Version : Best spark plug choice: High performance engine
My engine runs hot due to the heavy retardation to avoid det in the HC engine.
I think it's eating plugs.
Any recommendations?
Laine_16v
09-05-2011, 19:14
NGK BCPR 6ES, 7ES or 8ES will see you fine. Diffrent grades of heat, wouldnt know which one you need. As far as i know gaz runs standard renault plugs with no issues.
i run ngk, bcr 8es in the turbo with no issues.
Ok, looking into it further I think a colder plug would benefit the engine more. Emerald did say the same thing and did in fact swap over to some colder running plugs on mapping day. I believe though, Walker said they would be better and last longer, and be fine for now, but may need sorting out with better ones at a later date.
With NGK, it seems the last number denominates the temperature type, lower being hotter, from a range of 1 to 12. I think 8 may be ok...
i run ngk, bcr 8es in the turbo with no issues.
Ok. Thanks.
cliokongen
09-05-2011, 20:12
NGK BCPR 6ES, 7ES or similar in that heat range should do the trick.
You won't need a plug colder than that.
Michael
i run the 8es as well, last for ages, done 7k on this set i think
Just checked. Got the BCPR7ES in there currently.
The reason I ask is although overall the engine was in storming form on the way home tonight from work, I did feel hesitation, like a mild misfire, at part throttle.
BUT...I forgot. The 714 camcover I have is duff and leaking into plug well no. 2:
http://i174.photobucket.com/albums/w102/barneywobba/The%20coming%20of%20teh%20High%20Comp/DSCF0625.jpg
Pretty full of oil...
Cleared it out and hopefully it will be back to normal after a bit of a run to clear any oil off that ran down inside the bore.
i run NGK Iridium plugs in mine ( BKR6EIX 6418 ) no problems to report :D
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