Phil J Posted June 29, 2020 Report Share Posted June 29, 2020 (edited) Looking to replace my 1970 TR6 spark plugs whilst fitting a Lucas Gold coil, have read a lot about NGK plugs but no mention of fitting Champion plugs any reason for this, any preference ? thanks Phil Edited June 29, 2020 by Phil J Quote Link to post Share on other sites
ctc77965o Posted June 29, 2020 Report Share Posted June 29, 2020 Whatever you fit, make sure they are gapped correctly...some modern plugs are gapped for electronic ignitions with much stronger sparks & bigger gaps...check/adjust the plugs before you fit. Quote Link to post Share on other sites
Phil J Posted June 29, 2020 Author Report Share Posted June 29, 2020 Thanks Dave, I've read 30 thou is the best plug gap for a Lucas gold sport coil, so will give that a try. Quote Link to post Share on other sites
Hamish Posted June 29, 2020 Report Share Posted June 29, 2020 Just get them from a reliable source. There are dodgy counterfeit ones out there. these are very reliable. https://www.gsparkplug.com Quote Link to post Share on other sites
Phil J Posted June 29, 2020 Author Report Share Posted June 29, 2020 Thanks Quote Link to post Share on other sites
iain Posted June 29, 2020 Report Share Posted June 29, 2020 To reinforce the point raised by Hamish https://www.ngkntk.com/uk/press-media/social-news/emea/fake-products-how-to-avoid-them/ Iain Quote Link to post Share on other sites
RogerH Posted June 29, 2020 Report Share Posted June 29, 2020 Hi Phil, after a number of years of good service my NGK's would fail after 1000 miles. I changed to Champion L87 (4 pot TR4A) and they last for at least 5000 miles. It maybe that the NGK's are not fake but have become modern. I have read somewhere that many modern plugs are now being manufactured for modern engine technology. These engines tend to burn leaner for longer and thus the plugs are always dry. Our ancient lumps run very wet in comparison and the TR6 6 pot is wetter than the 4 pot. THis continuous damp state gets into the plug ceramic and causes chaos. This may be a load of rubbish but it could explain to issue. Roger Quote Link to post Share on other sites
Phil J Posted June 29, 2020 Author Report Share Posted June 29, 2020 Thanks Roger, I've now ordered 6 x Champion N9YC from Green Spark Plug as Hamish mentioned, will gap at 30 thou and see how it goes. Regards Phil Quote Link to post Share on other sites
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