OzVMX Forum

Clubroom => Tech Talk => Topic started by: steve7406 on August 04, 2013, 02:54:51 pm

Title: Spark plugs
Post by: steve7406 on August 04, 2013, 02:54:51 pm

Hi I've just been given some spark plugs NGK BR8EVX Platinum / NGK BMR4A anybody tell me what I can use them in.
Thanks.

Title: Re: Spark plugs
Post by: Speed on August 05, 2013, 08:43:46 pm

The BMR4A are the same as Champion CJ8 so they will fit Victor mowers and early BS and many chainsaws and more.
and the BR8EVX can be used where you would use a NGK B8EV, B8EGV or NGK BR8EV. 

Hope this was some help.  I'm not 100% sure about the resistor plugs.  I believe the internal resistor is there to suppress ignition noise and to help guard engine management systems
from interference that may cause damage to them.  So you should use resistor plugs when called for by the manufacturer but it's ok to use them when not called for. 

Title: Re: Spark plugs
Post by: EML on August 06, 2013, 09:50:51 am

The front of the NGK book/catalogue lists all codes.
B= 14mm thread 20.8 hex
R= resistor type (notes as above in last post)
8= heat range (higher number=cooler plug)
E= thread length 19mm
VX= platinum type

Title: Re: Spark plugs
Post by: steve7406 on August 06, 2013, 04:55:02 pm

Thanks guys that's what I needed to know now have plenty of plugs to keep my motors happy for a very long time