Cold version of R45TS plug?
Thread Starter
Pro
Joined: Jul 2004
Posts: 668
Likes: 3
From: Platteville WI
Update: I replaced the R45TS set with R43TS. So far, so good. While I was at it, I checked compression. Each one came in between 170 -175. That's good news to me, I was afraid they could be a bit too high.
Jay
Jay
Team Owner
Joined: Aug 1999
Posts: 30,995
Likes: 98
From: Ontario
You may wish to go back to the 45s for street use. 44s were recommended back then but were prone to fouling for everyday use. With modern fuels the 43s may be very cold unless you are on a circuit track at constant high RPMs.
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Le Mans Master
Joined: Apr 2004
Posts: 7,106
Likes: 38
From: Newark DE
The AC44 plug was standard on the older motors but it's been discontinued. A lot of books reference the AC43 as the replacement but it's typically too cold of a plug for the street, it works better if you are driving with sustained high RPMS. Regular street use tends to have the foul a lot. i'd go back to the AC-45 or AC-R45
Thread Starter
Pro
Joined: Jul 2004
Posts: 668
Likes: 3
From: Platteville WI
Appreciate the advise, but most of my driving is highway. Have not fouled out yet. Also, pinging has been greatly diminished. Still need to find non-ethanol fuel. I have a set of R44's in the garage in case I start having trouble. Again, thanks for the help.
Jay
Jay
