i have a 68' 400,points dist. the manual list an ac 43s plug but i can only find an ac r43s. it's a resistor type, i guess. what's the diffence? should i keep looking? also, i've pulled out a bosch super r6 10 871. they have a whiteiss or gray look to the ground, are they running hot. 6 mounths ago they were a light brown. no major timing changes but i am running it with 112 mixed in to get about 98 octain all the time now. nothing else looks off on the plugs. thanks tim
well, with a search of every thing bosch i've gained that the plug i pulled out are on there hot end. while the r43s are more toward the cool end of the a/c line. but can't find what would caused the whiteiss or gay hue to the plug. quess i'll install the new plugs, slow the timing coming in (new recurve kit)and ring it out working my way back up with the timing. slowly learning. tim
Does anyone the know the answer to au73's 43S vs R43S question? I've been able to find the needed 44S' at swap meets for mine but have wondered if an AC R44s would work for the time I can no longer find the correct NOS plugs. If I recall the "R" is for resistor and has something to do with radio interference? If it adds more resistance in the coil to distibutor to wire to plug total resistance, will it work the same as a non-resistor plug?
