Hi guys [and girls?], over the years with a variety of different makes and models of cars, bikes, trucks, lawnmowers, brushcutters, etc etc I've been under the impression that some brands of spark plugs suit certain engine better than others. Whether this is just my imagination or the wrong heat range or just a bad tune of the engine at the time is anybodys guess.

I know there are a lot of variables such as points or electronic ignition, compression ratios, too lean, too rich and the like but in an ideal world what does the forum think is the ideal plug for a street driven Y and is it a case of you get what you pay for.   

Pete, one of the Aussie mob. Beechworth, Victoria60 F100 Panel Van, Y-block. 65 Galaxie Country Sedan 390