Chris Hubball Posted February 27, 2022 Report Share Posted February 27, 2022 I am about to change the spark plugs on my TR4 which is fitted with a Piper Yellow Cam Lightened Flywheel and Extractor Exhaust Manifold , currently fitted are NKG 6HS Plugs should I replace with the same again or something different any recommendations would be appreciated. Cheers Chris. Quote Link to post Share on other sites
Chris Hubball Posted February 27, 2022 Author Report Share Posted February 27, 2022 Sorry too much red wine with Sunday Lunch plug type fitted should read BP6HS Cheers Chris Quote Link to post Share on other sites
Hamish Posted February 27, 2022 Report Share Posted February 27, 2022 22 minutes ago, Chris Hubball said: Sorry too much red wine with Sunday Lunch plug type fitted should read BP6HS Cheers Chris Stick with them, it’s what I use and as long as the new ones are genuine they will suit you fine. But I rarely change mine, just clean and gap them. Quote Link to post Share on other sites
james christie Posted February 27, 2022 Report Share Posted February 27, 2022 I have been pleased with a recent change to Bosch WR7BC+ which I turned to after some spitting and farting with BP6 HS, which I had used for well over 20 years. My use of my TR 3A is little and irregular and the Bosch seem to tolerate this better. james Quote Link to post Share on other sites
Chris Hubball Posted February 28, 2022 Author Report Share Posted February 28, 2022 Thanks for the replies, I noticed that BP7 HS Plugs are listed what is the difference them and the BP6HS ones, should I consider these ? I have also heard that there are non genuine plugs about is there any way of identifying them. Cheers Chris. Quote Link to post Share on other sites
ctc77965o Posted February 28, 2022 Report Share Posted February 28, 2022 37 minutes ago, Chris Hubball said: t BP7 HS Plugs are listed what is the difference them and the BP6HS Heat range...7 is a cooler plug...less likely to cause preignition, more likely to foul... BP6 has worked fine for me for 30+ yrs But if you have a preignition problem then try cooler....if you have a fouling problem try BP5s Quote Link to post Share on other sites
Hamish Posted February 28, 2022 Report Share Posted February 28, 2022 1 hour ago, Chris Hubball said: I have also heard that there are non genuine plugs about is there any way of identifying them. Cheers Chris. Buy from reputable retailers like https://www.gsparkplug.com/catalogsearch/result/?q=Bp6hs Quote Link to post Share on other sites
stuart Posted February 28, 2022 Report Share Posted February 28, 2022 2 hours ago, Chris Hubball said: I have also heard that there are non genuine plugs about is there any way of identifying them. Cheers Chris. Best explanation of how to spot them is here https://www.ngkntk.com/newsroom/blog/emea/fake-or-not/ Stuart. Quote Link to post Share on other sites
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