johnw Posted March 17, 2014 Report Share Posted March 17, 2014 Any recommendations for good plug leads? My TR6 is fouling No.4 plug if left for a few weeks, and they are over 20 years old, so I thought the leads would be a good starting point. Many thanks John Quote Link to post Share on other sites
RobinTR6 Posted March 17, 2014 Report Share Posted March 17, 2014 Have a search on this one as there is everything from Magnecor 8mm at about £80 to old style copper ones for £15, recommendations across all groups. Personally having spent money on silicone leads in the past cant claim I noticed a huge difference .... Quote Link to post Share on other sites
Fireman049 Posted March 17, 2014 Report Share Posted March 17, 2014 Give me copper core anyday! Tom. Quote Link to post Share on other sites
Rodbr Posted March 17, 2014 Report Share Posted March 17, 2014 (edited) Got mine through following company period like parts. http://www.gsparkplug.com/shop/plug-leads-conectors-ht-lead.html Makes a proper job and looks and works. http://www.gsparkplug.com/shop/misc-core-racing-ybs.html rgds Rod Edited March 17, 2014 by Rodbr Quote Link to post Share on other sites
RogerH Posted March 17, 2014 Report Share Posted March 17, 2014 Hi John, if #4 is fouling up perhaps a hotter plug may keep it under control. Roger Quote Link to post Share on other sites
Tom Boyd Posted March 17, 2014 Report Share Posted March 17, 2014 Magnecor KV85 Quote Link to post Share on other sites
Steves_TR6 Posted March 17, 2014 Report Share Posted March 17, 2014 I have and like KV85s too Menno Not sure they are the best value for money at about £70 for a set, but they are top quality and last a lifetime? Steve Quote Link to post Share on other sites
TorontoTim Posted March 18, 2014 Report Share Posted March 18, 2014 Copper core are great and certainly look the part, but be aware that they can cause interference with electronic equipment. In my case, my Brantz rally tripmeter started self-zeroing in a random manner and it took me ages to find the problem... Changed back to "modern" ones, fixed! Quote Link to post Share on other sites
johnw Posted March 18, 2014 Author Report Share Posted March 18, 2014 Hi all, thanks for the replies. Might try and make my own copper leads coz i like tinkering. Roger, would a hotter plug help on start up? Once the engine is running cleanly I have no further problem. I think after standing the fuel leads lose pressure and as the pressure builds up during start up a weak spark fouls the plug on No.4. Once again thanks for all replies John Quote Link to post Share on other sites
RogerH Posted March 18, 2014 Report Share Posted March 18, 2014 Hi John, why not swap one of the existing leads with #4 and see if it happens again. Not sure a hotter plug would help during start up as it would be cold initially. People swear by the expensive leads and if that keeps them happy then fine. People also swear by cheap copper or even graphite leads and that is also fine. I thought I had copper leads but found they were graphite thread - they worked perfectly for 14 years. A lot of the quality in leads is in the insulation under serious conditions. Tim, a basic copper lead is not suppressed so wiil/could cause interference. If you used a suppressed plug cap or a suppressed plug that may remove the interference. Roger Quote Link to post Share on other sites
johnw Posted March 18, 2014 Author Report Share Posted March 18, 2014 Hi Roger, As luck would have it No.4 is the shortest lead and a bit streched to reach the plug, so cannot swap. regards John. Quote Link to post Share on other sites
monty Posted March 18, 2014 Report Share Posted March 18, 2014 I have and like KV85s too Menno Not sure they are the best value for money at about £70 for a set, but they are top quality and last a lifetime? Steve I found them a bit cheaper than this @ Holdens Automotive. Quote Link to post Share on other sites
BrianC Posted March 18, 2014 Report Share Posted March 18, 2014 I'm sure that in the days when all leads were copper and we all used to make up our own, it was pretty well essential to fit a suppressor (capacitor??) in each lead to avoid interference with TV signals which was an offence. I still have some old leads so-fitted amongst my spare/relics. I think there were also plug caps which had the suppressor built-in. Never had a problem with copper leads but I do remember spraying them and the dizzy and associated electrics once a year with some sort of insulation liquid or WD40. Quote Link to post Share on other sites
graeme Posted March 18, 2014 Report Share Posted March 18, 2014 I use KV85 leads from MSW. Can't fault them. http://www.motorsportworld.co.uk/ Cheers Graeme Quote Link to post Share on other sites
PJM Posted March 18, 2014 Report Share Posted March 18, 2014 If the plugs have given as good a service as the ht leads they may benefit from being changed Quote Link to post Share on other sites
ianc Posted March 18, 2014 Report Share Posted March 18, 2014 Copper. Buy a length and cut to suit. Inexpensive and unlikely to cease working. Whatever leads are fitted, if the engine compartment gets really wet, one is likely to suffer arcing. But a blast with WD40 usually solves the problem. Remember that the carbon conductor inside the centre of the distributor cap is present to conduct from the coil HT to the rotor arm, and it will wear away It is a Service item, obtainable from the Distributor Doctor). In doing so, it will disperse fine carbon dust onto the inside of the cap, and, if the dust is not removed periodically, it can short the HT to earth - which means the engine stops! Ian Cornish Quote Link to post Share on other sites
Lebro Posted March 18, 2014 Report Share Posted March 18, 2014 If the lead for No. 4 is "a bit stretched" then perhaps it is damaged & does not have continuity from one end to the other. I would just buy a set of new leads from any of the usual suppliers eg Moss, Rimmers etc, they are most unlikely to give you any problems for many years, & are not that expensive. Bob. Quote Link to post Share on other sites
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.