Michael Cline wrote:
> I am confused! I have a 1971 TR-6, what spark plugs should I use?
> I see in my Bently manual on page 32 it states "N-12Y (N-9Y on
> 1973-1976 cars)", is this correct? Other catalogs contradict this,
> such as TRF....N-12Y "hotter plug may be better for later cars
> with emission controls") What should I use in my '71 and why?
There is much mis-printed information on this in the manuals,
particularly with contradictions, etc.
I use Champion RN-9YC in my 70 TR6, and Champion RN-12YC in
my 1974 TR6. The RN12YC is a hotter plug. From what I have
been able to find in various literature, this is the factory-
suggested configuration:
Champion N9Y -- 1969-1972
N12Y -- 1973-1976
Feel free to substitute your favorite brand of plug (NGK,
Splitfire, whatever).
I don't honestly know why the lower compression engines want
the hotter plug. Maybe somebody else out there that knows
can explain...
--ken
'70 & '74 TR6 Daily Drivers
--
Kenneth B. Streeter | EMAIL: streeter@sanders.com
Sanders, PTP2-A001 |
PO Box 868 | Voice: (603) 885-9604
Nashua, NH 03061 | Fax: (603) 885-0631
|