Rusty,
Here is a drawing which shows where the
highest temps are on the trochoid housing. I don’t know the source as I
snagged them from the other list years ago. My guess is that it came from the
Yamaguchi (sp) book. From this data, you can see why you would want to locate
the tc as near the leading plug as possible.
Mark S.
Did the original graph come from
Mazda, or was it generated somewhere else? Also, did they measure exactly
the same spot, or do you know where they measured the
temp. I've got all 4 CHT inputs free on the EM-2, so I might look
into at least monitoring the spark plug hole with one of those ring probes.
Rusty (my G38 arrives Thursday)