Re: TR6 Spark Plugs

["Robert M. Lang" <lang@isis.mit.edu>]

Hi,

Early TR6's (prior to CF1) used N9Y, later cars used he N12Y. I believe that
the earlier cars with the higher compression engines used a colder plug
(N9y) and the newer cars with lower compression use the N12Y. This has been
the case for my TR6's since new... My Dad owned a '70 and then the '74 that
I have now. The '70 used the N9Y's and the '74 N12Y's...

I think you may have the numbers reversed.

Good luck.

rml
TR6's