Greeks Posted July 27, 2007 Share Posted July 27, 2007 What do the numbers mean for NGKs? Anyone know?I'm using BP5EY plugs on the recommendation of an Aussie Saloon guru, but he's up in Brisbane where the weather is much warmer ... would this affect the running of my car now I'm in cooler climes? Should I swap back to B6PES as I used to use in the UK? Or is it worth using the EY ones with the "V-groove" thing?Also, would reconnecting the 'S' manifold waterway be a good idea to help cold starts? It's been bypassed and would require some fettling to get working again as the end of the pipe has rusted at the front of car end of the manifold.The water temp. gauge runs v.low - thanks to the big aussie radiator but I thought the heated manifold was to warm the carbs? Link to comment Share on other sites More sharing options...
G-man Posted July 27, 2007 Share Posted July 27, 2007 Mate, I'm no expert, but I'm pretty sure the heat range refers to the running temperature of the engine, not the ambient temperature. Unfortunately, I can't remember if you want the 'hotter' plug for a hotter engine, or the 'cooler' plug.I'm sure Dave S will answer further soon - he never seems to sleep!PS... I run BP6's in Adelaide in the GT6 - Temp range from 1 to 40 degrees, no problems. Link to comment Share on other sites More sharing options...
G-man Posted July 27, 2007 Share Posted July 27, 2007 Some good info on the NGK website. It relates to 'tip temperature'.Id say if they're not getting gunked up or melting, you're on the money! Link to comment Share on other sites More sharing options...
Greeks Posted July 27, 2007 Author Share Posted July 27, 2007 Cheers Nick. Well I guess I knew that it was the engine temp. but I didn't know how much it varies depending on ambient I suppose ... Link to comment Share on other sites More sharing options...
Greeks Posted July 27, 2007 Author Share Posted July 27, 2007 Ok ... sounds like I ought to switch back to what I knew. Maybe Greg makes people break their engines so he can rebuild them ;-D ... still at least he doesn't use Newark Engines ;-)I have definitely had some fouling issues. Link to comment Share on other sites More sharing options...
G-man Posted July 27, 2007 Share Posted July 27, 2007 I've been told we'll always get a significant amount of fouling due to unleaded petrol, but unsure how true this is. Can anyone confirm? GT? If true, how do modern cars avoid this? Link to comment Share on other sites More sharing options...
G-man Posted July 27, 2007 Share Posted July 27, 2007 So it is correct to expect a fair amount of fouling - so how often do you recommend replacing the plugs? Link to comment Share on other sites More sharing options...
Hasbeen Posted July 27, 2007 Share Posted July 27, 2007 I was getting a very slight hesitation, at low revs, & small throttle openings, after about 2,000 Km, on new standard NGK plugs. This was worse when using Caltex petrol. I use 95 unleaded.One wipe with a file would give another 1000, or 2000 Km, before it returned. The hesitation was so slight that some people could not feel it.I sitched to Iridium plugs, 8000 Km ago, & it has not returned. I can't be sure it was the plugs, as there is a feeling that we get some pretty lousy, imported petrol, here, from time to time, but its fine since I fitted them. Link to comment Share on other sites More sharing options...
Deleted User Posted July 27, 2007 Share Posted July 27, 2007 I have found iridium BP6 IRX? to be far less prone to fouling and do recover OK although how you clean them (carb cleaner?) is a mystery... they are not cheap but are definitely a better plug.Fouled plugs ( generally due to too much choke use on unleaded) is a very common problem in Oz on Triumph Link to comment Share on other sites More sharing options...
GT6Steve Posted July 27, 2007 Share Posted July 27, 2007 Andy, is all your fuel imported or do you refine on your shores? If the former, do you know where it comes from?I was intrigued with your comment that you get dodgy fuel sometimes.Steve Link to comment Share on other sites More sharing options...
mk2vitesses Posted July 27, 2007 Share Posted July 27, 2007 Working in the light aircraft industry, I have the benifit of a Champion sparkplug blast cleaning machine to hand!I to had a set of NGK's foul a few years back, the above machine was the only way I got them clean! Link to comment Share on other sites More sharing options...
lordleonusa Posted July 27, 2007 Share Posted July 27, 2007 I'm using NGK stock # 6637 : BPR6EIX Iridium.I have had no fouling since fitting these.I appreciate that the main difference with 'better' plugs is that they last longer in service, but as they seem to run better, I have kept them.L Link to comment Share on other sites More sharing options...
Nick Jones Posted July 27, 2007 Share Posted July 27, 2007 I like the Bosch 3 prong jobbies as used on Mk2 GTI. Worked better than anything else in my hot 1300 (Herald) and the Vitesse likes them too. Failing that NGK. Champion..?? no thanks!Nick Link to comment Share on other sites More sharing options...
Deleted User Posted July 27, 2007 Share Posted July 27, 2007 You shouldn't be using long or protruding or multi electrode types in that chamber.You are asking for trouble. Pistons are really no good in Triumph cars.Actually I don't know why people keep knocking Champion.I don't think they're a problem having used lots in early V12s, and they gave NO difference in power on a dyno, no matter how people claimed they were smoother, or felt faster or whatever......I'm always sceptical here.As I said, the plugs I use now are Bosch platinum for Sierra cosworth, but that's because they're easy to get from a Ford dealer, and go straight in a Jag AJ6.They still cost a tenner each tho! Link to comment Share on other sites More sharing options...
Nick Jones Posted July 27, 2007 Share Posted July 27, 2007 GTEVO wrote:Actually I don't know why people keep knocking Champion. Had failures with Champion, not with NGK or Bosch. That's not knocking, that's experience.Nick Link to comment Share on other sites More sharing options...
Hasbeen Posted July 28, 2007 Share Posted July 28, 2007 Steve, some of our cheep fuel comes in from in from Singapore, & the majors suplement their local production, from time to time, with Asian inports.GTEVO, I was using Bosch Platinum plugs in F1, & F2 Brabham open wheelers, back in the 60s. In those days we had to warm up the things with hot plugs, then change to our racing plugs, just before we rolled out onto the grid. I can asure you I would not be bothering with "sexy" plugs, in road cars, if I could find another answer to our problem.We run slightly hotter Iridium plugs, which can burn the contamination off, without being damaged themselves. These are road cars, which are not driven hard enough to be damaged by the hoter plug. Perhaps, if they were driven harder the fouling would not happen, but it does now, in recent years, where it didn't hapen a few years ago. Hasbeen Link to comment Share on other sites More sharing options...
Greeks Posted July 28, 2007 Author Share Posted July 28, 2007 I don't know even the immigrant petrol's a problem ;-DIt might be that i'm doing a lot more town driving recently that's caused the problem. Fuel consumption has plummeted from 28mpg too ... I think the Sprint needles I'm using are richer at low revs too. Probably a combination. Anyway i'll stick the B6PES in tomorrow morning and takethe old girl up the mountain and see how it goes. Link to comment Share on other sites More sharing options...
.thumb.jpeg.b15b81ef10abeea1c3039ae03c4a9f3a.jpeg)
Recommended Posts
Archived
This topic is now archived and is closed to further replies.