prs Posted March 25, 2003 Share Posted March 25, 2003 I'm about to change the plugs in my 1.6SS, anybody know the difference with the following. NGK R BCPR7ES and NGK BCP7ES. The ones that came out are the latter and I just want to check whether the R rated ones are ok before I fit them, are they just simply a wider temperature range? thanks for any advice Phil Link to comment Share on other sites More sharing options...
Luke Beaumont Posted March 25, 2003 Share Posted March 25, 2003 The R just means it's a resistive plug, the function of which escapes me. Link to comment Share on other sites More sharing options...
Peter T Posted March 25, 2003 Share Posted March 25, 2003 : NGK "R" or resistor spark plugs use a 5k ohm ceramic resistor in the spark plug to suppress ignition noise generated during sparking. NGK strongly recommends using resistor spark plugs in any vehicle that uses on-board computer systems to monitor or control engine performance. This is because resistor spark plugs reduce electromagnetic interference with on-board electronics. They are also recommended on any vehicle that has other on-board electronic systems such as engine-management computers, two-way radios, GPS systems, depth finders or whenever recommended by the manufacturer. In fact, using a non-resistor plug in certain applications can actually cause the engine to suffer undesirable side effects such as an erratic idle, high-rpm misfire, engine run-on, power drop off at certain rpm levels and abnormal combustion. Power Freak member! Link to comment Share on other sites More sharing options...
martinwhitcher Posted March 25, 2003 Share Posted March 25, 2003 Ring Oily (DVA Power), he has the dog's danglies in. (No conection, apart from a satisfied customer) Martin MW 51 CAT Link to comment Share on other sites More sharing options...
Luke Beaumont Posted March 25, 2003 Share Posted March 25, 2003 Speaking of Oily, has anyone heard from him lately in an online capacity? I've been waiting for an email reply from him for nearly a week now. Link to comment Share on other sites More sharing options...
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