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Blue_Runner
05-13-2014, 10:37 AM
Model: 2004 Yamaha 150 two stroke model TXRC

Which spark plugs NGK BR7HS or BR7HS-10? I believe it is the same plug only the -10 is gapped differently. Anybody know which I should get? Pretty sure my motor has BR7HS in it now but I'm at work. Worst case I can look when I get home tomorrow but wouldn't mind picking these up on my way home.

THEFERMANATOR
05-13-2014, 01:49 PM
I believe the -10 means a resistor plug to prevent electrical interference with VHF radios and LORAN-C(when we still used LORAN C).

Blue_Runner
05-13-2014, 10:51 PM
Thanks for the response Ferm. I got home and looked under the cowl at the sticker and it says BR7HS 10 so that is what I will go with. I saw some stuff online about the resistor plugs so you are probably right on all accounts........

cterrebonne
05-13-2014, 11:03 PM
I believe the -10 means a resistor plug to prevent electrical interference with VHF radios and LORAN-C(when we still used LORAN C).

Actually the "R" means resistor, the 10 is 1.0mm gap.

neat link

http://www.sparkplugs.co.uk/pages/technical/NGK-spark-plug-code.htm

Destroyer
05-14-2014, 08:43 AM
NIce link Cterrebonne, thank you. :beer:

Blue_Runner
05-14-2014, 11:35 AM
+1 awesome link! Thanks! Going to pickup my plugs now...... :beer:

Blue_Runner
05-14-2014, 02:03 PM
Picked up 6 plugs and 3 gallons of Penzoil XLF synthetic blend 2 smoke lube juice. Walked out just shy of 80 bucks lighter than when I went in.

capt chuck
05-14-2014, 03:34 PM
I have the BR7HS-10 in my 150 Yammi