stuart Posted August 6, 2018 Report Share Posted August 6, 2018 For a 4 cylinder using NGK BP6HS (short reach) use Nippon Denso W20FP-U and for a 6 cylinder using NGK BP6ES (Long reach) use Nippon Denso W20EX-U or W20EP-U or W20EP, not sure why there is a choice in the long reach Stuart. Quote Link to post Share on other sites
iain Posted August 6, 2018 Report Share Posted August 6, 2018 Many thanks Stuart Iain Quote Link to post Share on other sites
riverstar Posted August 7, 2018 Report Share Posted August 7, 2018 Hi Folks all my small boxes agree with the original product as per the Utube video. I'm now concerned that the UTube video is a fake Roger I have often wondered if this entire forum is fake news. Why would apparently intelligent men spend so much time trying to keep a aged vehicle on the road when for a fraction of the cost they could have a pedal cycle to take them to the pub, where they could spend the time putting the world to rights. Quote Link to post Share on other sites
Tom Fremont Posted August 7, 2018 Report Share Posted August 7, 2018 Dunno about the 4-pots but my CP spec engine on Webers uses BP7ES, the BP6ES running white. 30K mile changes are possible though I haven't always waited that long. 125K miles and counting, and no reason to consider switching. I use the same plug in higher c/r engine with very high lift cam. Cheers, Tom Quote Link to post Share on other sites
Chris Glasbey Posted August 7, 2018 Report Share Posted August 7, 2018 My TR3A has a 'fast-road' modified engine on Weber 45s. I have just had it set up on Rolling Road ...and it runs perfectly using NGK BP6HS plugs. However, it was suggested that I could try Bosch plugs ? Any advice on these? Thanks, Chris. Quote Link to post Share on other sites
ianc Posted August 7, 2018 Report Share Posted August 7, 2018 Since 1993, when 4VC went back on the road, I have been using BP7HS set at 32 thou, because that's what Neil fitted. I'm on SUs with electronic (Newtronic/Piranha) ignition, and get about 115 HP at the wheels, but even in traffic jams, never seems to oil up - although it hates such conditions and tick-over is all over the place! The plugs don't seem to erode and I change them seldom, but I remember that (in the 1960s) my old bog-standard TR2 on points used to suffer from erosion of its plug electrodes. Ian Cornish Quote Link to post Share on other sites
tr graham Posted August 7, 2018 Report Share Posted August 7, 2018 Had similar problems with 2 NGK plugs on my 5 only done around 800 Miles strange problem ran OK on tick over but failed at mid power band then ok again at high revs , and only 2 of the 6 though Graham Quote Link to post Share on other sites
RogerH Posted August 16, 2018 Author Report Share Posted August 16, 2018 Hi Folks, the new NGK plugs lasted just 2 weeks. Yesterday and today the car appeared to be running on 2 plugs at low revs. Not sure at high revs as things tend to smooth out at higher revs. Tomorrow I shall fit the champions and see how they play the game. Roger Quote Link to post Share on other sites
DaveN Posted August 16, 2018 Report Share Posted August 16, 2018 OOOOOPs!!!! it should be NGK. Roger I think youve answered your own question Roger....... NKG? Plugs....really? Quote Link to post Share on other sites
iain Posted August 16, 2018 Report Share Posted August 16, 2018 (edited) Roger send these plugs to NGK for there assessment.....let them do the PQI...unless they were too cheap to be true Iain Edited August 16, 2018 by iain Quote Link to post Share on other sites
ctc77965o Posted August 17, 2018 Report Share Posted August 17, 2018 Sounds like a mixture problem, can you recover them with a brisk wire-brushing?? Hi Folks, the new NGK plugs lasted just 2 weeks. Yesterday and today the car appeared to be running on 2 plugs at low revs. Not sure at high revs as things tend to smooth out at higher revs. Tomorrow I shall fit the champions and see how they play the game. Roger Quote Link to post Share on other sites
RogerH Posted August 17, 2018 Author Report Share Posted August 17, 2018 Hi Dave, funny you should mention mixture. From the colour of the plugs they were just on the weak side of good. Have opened the main jets one flat. I have also fitted Champion L87Y plugs. It is running very well again. We shall see what the next couple of weeks brings. Roger Quote Link to post Share on other sites
Fireman049 Posted August 17, 2018 Report Share Posted August 17, 2018 I still have Champion L10 plugs, still in their boxes. I bought these in 1959 when my Dad had a 1954 Vauxhall Wyvern. Tom. Quote Link to post Share on other sites
monty Posted August 17, 2018 Report Share Posted August 17, 2018 Have heard that Champion are not as good as they used to be! Do we know if there are fake Champion &/or Nippon Denso around?! Cheers. Quote Link to post Share on other sites
stuart Posted August 17, 2018 Report Share Posted August 17, 2018 Have heard that Champion are not as good as they used to be! Do we know if there are fake Champion &/or Nippon Denso around?! Cheers. Champions went down hill in the late 80`s no idea what they are like now but it was at that time everyone went over to NGK`s but obviously now its difficult to tell whats good and whats bad as there is so many fakes around. Stuart. Quote Link to post Share on other sites
RogerH Posted August 17, 2018 Author Report Share Posted August 17, 2018 The guys at Enginuity in Acton recommend Champion. They recon they have no trouble with them. Any way. They are in the car and time will tell. Roger Quote Link to post Share on other sites
silverfox4 Posted August 17, 2018 Report Share Posted August 17, 2018 +1 on the Champion L87Y made in the US. Maybe the old motors just like the copper plugs which seem to fire easily Quote Link to post Share on other sites
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