More TR6 Head Questions

[Mark Stahlke <mstahlke@denver.infi.net>]

   I just ran a compression test on my 71 TR6 with its 74-ish engine.
The numbers are 122, 120, 120, 129, 124, 129. These numbers seem a little low.
Maybe tomorrow I'll check the valve lash and test it again.

   Would numbers in this range indicate a 7.5 to 1 head as fitted to 74
models?

   Are the single pipe and dual pipe exhaust manifolds compatible in terms of
port alingment? What about the intake manifolds?

   Comments anyone?

Thanks,
Mark Stahlke