minimaquinas Posted October 11, 2014 Share Posted October 11, 2014 Is there any difference in red or black rotor arms apart from the colour and also the black or blue dizzy caps Tia Quote Link to comment Share on other sites More sharing options...
AndrewHorsfield Posted October 12, 2014 Share Posted October 12, 2014 If I remember correctly, the black ones are more likely to be original Lucas. Lucas ones should say Lucas on them. The quality of spark becomes very important if you are running on LPG. Quote Link to comment Share on other sites More sharing options...
robertspark Posted October 12, 2014 Share Posted October 12, 2014 +1 for andrew, same as my thoughts + the LPG comment. I use to go through rotor arms regularly (kept a can of WD40 and a spare new rotor arm at all times), made no difference who's rotor arm I had (genuine Lucas or other), I got a counterweight spring kit from realsteel I think (long time ago!), and once I took my distributor apart found that that the counterweights were all all over the place, new set of springs secured everything, never had a problem after that on rotor arms. Quote Link to comment Share on other sites More sharing options...
Ratty43 Posted October 13, 2014 Share Posted October 13, 2014 Apparently a lot of the new black ones have a high carbon content which leads to shorting accross the arm. The red ones are supposed to sort this issue. Quote Link to comment Share on other sites More sharing options...
JeffR Posted October 14, 2014 Share Posted October 14, 2014 My V8 used to eat rotor arms (used to get about 500 miles out go each one), tried every type known to mankind , made no bloody difference, then I changed the amplifier pack on the dizzy, and no more problems. Black Lucas ones used to last a little bit longer than the red ones. Quote Link to comment Share on other sites More sharing options...
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