Adrian Williams Posted December 10, 2008 Share Posted December 10, 2008 I occasionaly get a slight misfire over 8K on my K series R500 and don't like the idea of that old fasioned distributor wizzing round trying to keep up. I'm going to go wasted spark over the winter and fit a coil pack. At the same time I was going to treat the engine to a nice set of HT leads. Should I buy a set from Magnacor, Silicone Blue or a.n.other 🤔 Adrian Link to comment Share on other sites More sharing options...
Peter T Posted December 10, 2008 Share Posted December 10, 2008 There is no evidence that standard leads are worse than Mega expensive 8mm or 10 or 12mm for standard applications. It is your choice if you want your engine bay to be in blue or red. If you have a missfire then a standard new set of leads will do. Link to comment Share on other sites More sharing options...
Adrian Williams Posted December 10, 2008 Author Share Posted December 10, 2008 Thanks Peter. It had a new set of leads earlier in the year which will be about 400 miles ago so I'm not blaming the standard leads just looking for a bit of quality kit that I can fit and forget. As for colour the Black is fine goes with evertything 😬 Adrian Link to comment Share on other sites More sharing options...
Johnty Lyons Posted December 10, 2008 Share Posted December 10, 2008 I use a Megnecor set and have done for years Never give any bother 😶🌫️ jj N.I. L7C AR 🙆🏻 Membership No.3927. 240BHP 1900cc K Series 40th Anniversary Link to comment Share on other sites More sharing options...
Support Team Shaun_E Posted December 10, 2008 Support Team Share Posted December 10, 2008 Adrian - I've just switched from Magnecor to a set of Halfords own brand due to the misfires I was getting at Aintree. Part of the problem for me is having a VVC head with distributor (EU2) ignition - the standard K-series Magnecor leads don't fit well as the VVC head is taller than a standard K16. I doubt you will have the same problem but it has put me off using Magnecor. Yellow SL #32 - member of Drowned Rat Racing Link to comment Share on other sites More sharing options...
Simon.Rogers1 Posted December 10, 2008 Share Posted December 10, 2008 I'm with Shaun on this one. My troubles at the start of the year I can only deduce were as a result of poorly fitting Magnecor leads. Not questioning the quality of the lead but the fit to the plug was certainly poor on my set. Once they slipped over the plug you could feel play in the connection. I made the metal tighter but as it slipped over the plug instead of springing over it just opened up and stayed loose again. I think this may have contributed to the coil failure. Reverted back to rover leads. No problem. Management Team Member Link to comment Share on other sites More sharing options...
Adrian Williams Posted December 11, 2008 Author Share Posted December 11, 2008 Thanks for the input guys. Adrian Link to comment Share on other sites More sharing options...
Rob Walker Posted December 11, 2008 Share Posted December 11, 2008 Magnecor leads are the best available The rf leakage/interference is extremely low. The stock graphite leads are rubbish in comparison. If you spec the correct connectors you cannot buy better HT leads. The VVC needs special plug connectors as the head is 13mm taller. Link to comment Share on other sites More sharing options...
Peter T Posted December 11, 2008 Share Posted December 11, 2008 The stock graphite leads are rubbish in comparison Certainly not in price? If standard leads are so bad then why do they fit them? I have never had a problem with standard leads and i am sure that others have not? Care to explain your reasoning why? Link to comment Share on other sites More sharing options...
Rob Walker Posted December 11, 2008 Share Posted December 11, 2008 The stock leads are made to a price and have a graphite core, this can break down with vibration and movement. The graphite cores resistance acts as a current limiter to reduce the energy transmitted through to the spark plug and hence gives supression. The Magnecor lead has a solid centre core this is then insulated then counter wrapped with a coil of wire as a screen to provide the supression, as a result more energy can get to the spark plug and there is less electromagnetic radiation that can corrupt the ECU and sensors. It is escential to use resistive spark plugs with the magnecor leads. try getting a tacho pulse reading off a Mangecor lead its impossible as the leakage is too small. Link to comment Share on other sites More sharing options...
Adrian Williams Posted December 11, 2008 Author Share Posted December 11, 2008 Thanks for elaborating Rob, very interesting. What's a resistive plug 🤔 Adrian Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted December 11, 2008 Share Posted December 11, 2008 R in the part number ..... with a higher resistance ? Link to comment Share on other sites More sharing options...
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