I want to buy some Ngk spark plugs for my engine. It is a c20xe engine '93 model dizzyless ignition.
But I am a little confusion with this...
First of all...
The vauxhall spark plugs for the c20xe engine is the above:
FLR8LDCU with 2-groung electrodes
NGK Standard spark plugs:
1. BKR6EK for c20xe engines up to '92(2-ground electrodes)
2. BKR5EK for c20xe DIS engines '93 up to '96(2-ground electrodes)
3. BCPR7ES for c20xe engines up to 92 (maybe for 20xe engines???) (I think with 1-ground electrode)
NGK IRIDIUM spark plug:
A. Why have two different types (BKR6EK/BCPR7E) for the same engine on the standard spark plug?
B. For the engine with DIS have the same spark plug but with different heat rating number. BKR"5"EK is hotter from BKR"6"EK.
For which reason?
C. Can I use the BKR6EK on my DIS engine or may I have problems with the engine running?
I am asking this Question because NGK makes iridium spark plugs only with "6" Heat rating number like pre '92 model spark plugs and not with"5" Heat rating number like standard spark plug that recommend NGK for DIS c20xe engines.
BKR6EK similar to the Iridium BKR6EIX. "IX" means Iridium type.
any help apreciated.