What is the difference between an RB25DE engine from an R32 and an R33 ?
I have a 93 R32 GST25 and am looking at replacing the plugs.
I thought all RB25DE engines were identical (hence the model name RB25DE, if the engine is different it should have a different name!) but the NGK website (http://www.ngk.com.au/PartFinder/spark_plug_imports.php) shows 2 completely different spark plug part numbers (for both irridium and platinum) depending on if its a 91-93 RB25DE, or a 93-98 RB25DE version.
Mine is a 93, but because its an R32 Im guessing Im supposed to use the 91-93 part numbers.
Repco and SuperCheap look at their books and tell me I should use part number BKR5EIX-11 but thats the part number from the 93-98 version.
The NKG website indicates I should use BCPR5EIX-11
Anyone know what the K and CP stand for, in the first part of those part numbers?
