• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

Spark Plugs

Share this page

kodpkd

kodpkd

Jedi Hopeful
Country flag
Offline
Old topic, but still confused. I know most people recommend the N12Y plug. But when I look up the plug for different engines, "they" recommend the N5C for the older AH's up to the BT7 and the N12Y after that. Why?

I understand a lot of people use NGK, etc. This is just about the Champion plugs. Thanks.
 
It's mostly a matter of choice but, I run N5Cs in my TF XPEG and have never had a problem. Just saying. PJ
 
Possibly a difference in the heads. There was a thread, somewhere, about the later heads--BJ7 and 8, I think--having their plugs embedded further back into the cavities in the heads, possibly the reason they spec (relatively) advanced timing (15deg BTDC@600RPM). BN2s and BN2/100Ms spec slightly different plugs as well, for the same heads but different compression, cams, etc.
 
Back
Top