View Full Version : TR6 TR6 spark plugs

04-14-2010, 08:47 AM
OK, now that the rain has stopped, I am getting ready to fire up my re-built engine. It has a GP2 cam and 9.5 CR.

Any recommendation on the plugs to use would be appreciated.

04-14-2010, 09:13 AM
NGK BP6ES maybe? Maybe Paul has a different recommendation....

04-14-2010, 10:51 AM
I've had nothing but good experience with Champion RN12YC in both engines. One was stock, the other hot.

04-14-2010, 11:09 AM
I've used both the NGK above and the Champions. I'm currently using the Champions and they are fine.

Andrew Mace
04-14-2010, 02:16 PM
Thank goodness; finally, someone (besides me) has something good to say about Champions! I've long thought I was the only one!

I admit to a fair level of ignorance on this particular topic, but I'm wondering if a slightly colder plug might be appropriate with the modifications stated, as in the [R]N9Y[C]?

04-14-2010, 02:26 PM
I tried several brands including the NGK's with OK results but I went back to the Champions on the advice of others and I'm not sorry. I don't know why but I have not needed to touch them for two years !

04-14-2010, 06:56 PM

Now you've got me thinking. I'm not near the car to check, but I wasn't paying attention to the RN12YC number, just the brand name. I MAY have the RN9YC's in mine. I'll confirm and post back, but they are Champions and I like them. I used them for over 20 years before the rebuild and have no real pressing reason to switch.

04-15-2010, 09:05 AM
Wonderful, anyone want a set of brand spanking new RN12YC?

Just joking, I will give then a try...