Thanks for all the help. Noise was definitely the "viscous" coupling
not performing its task well. Spark was revived with a Crane EI unit
that installed as advertised. Interesting to note how much better the
car performs with the new EI. I guess it was possible for the old unit
to work below standard. I always assumed that if an EI worked at all
then it was working as designed. Anyway, the '78 has far more zip than
I can remember in years.
Gregory J. Edge
'78 TR7 FHC OGDO "sparky"
'80 TR7 DHC FI a/c "hushed puppy"
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